608 lines
22 KiB
Plaintext
608 lines
22 KiB
Plaintext
From: Digestifier <Linux-Development-Request@senator-bedfellow.mit.edu>
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To: Linux-Development@senator-bedfellow.mit.edu
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Reply-To: Linux-Development@senator-bedfellow.mit.edu
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Date: Sun, 25 Sep 94 22:13:17 EDT
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Subject: Linux-Development Digest #227
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Linux-Development Digest #227, Volume #2 Sun, 25 Sep 94 22:13:17 EDT
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Contents:
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Re: p5 code optimization for gcc (H. Peter Anvin)
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Re: Linux Floptical Disk Driver? (Phil Hughes)
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Re: elf benchmarks (getting closer) (John Richardson)
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Re: Linux on CD (Jeff Kesselman)
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Re: Special Sale On QNX! (Dan Pop)
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Re: elf benchmarks (getting closer) (Marc Fraioli)
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Re: NCR 53C406A SCSI (Mathias Koerber)
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Re: Special Sale On QNX! (Rob Janssen)
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Re: Don't use Linux?! (Darin Johnson)
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Re: [STATUS] Linus Floppy Driver Development (Mats 'MaDsen' Wikholm)
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Re: Special Sale On QNX! (Myles Williams)
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Re: more floppy problems with 1.1.51 (Andries Brouwer)
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Problem building intel gcc (Erann Gat)
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Re: 1.1.51 seg fault on shutdown in _floppy_release (David Flood)
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Re: elf benchmarks (getting closer) (Dan Connolly)
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Re: Digi Intelligent Boards? (Bob Salita)
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----------------------------------------------------------------------------
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From: hpa@ahab.eecs.nwu.edu (H. Peter Anvin)
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Subject: Re: p5 code optimization for gcc
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Reply-To: hpa@nwu.edu (H. Peter Anvin)
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Date: Sun, 25 Sep 1994 19:03:24 GMT
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Followup to: <35v1uk$ssg@saba.rutgers.edu>
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By author: werche@saba.rutgers.edu (ChiWei Che)
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In newsgroup: comp.os.linux.development
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>
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> Hi all:
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> A faithful Linux user here. Recently, I got a Pentium machine, of course the
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> thing is dedicated to Linux. Yesterday, I am upgrading the gcc 2.5.6 to
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> intel optimized version of gcc 2.5.8. I use that to recompile the kernel,
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> the system is running faster before (although I didn't run any benchmark, and
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> I don't know any benchmark in Linux, but you definitely can feel it). To all
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> who are using the P5 CPU, try to replace the old one with pentium code, it's
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> better.
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>
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Are the 586 optimizations slated to be included with stock GCC 2.6?
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/hpa
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--
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INTERNET: hpa@nwu.edu --- Allah'u'abha ---
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IBM MAIL: I0050052 at IBMMAIL HAM RADIO: N9ITP or SM4TKN
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FIDONET: 1:115/511 or 1:115/512 STORMNET: 181:294/1 or 181:294/101
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"The Earth is but one country, and mankind its citizens." -- Baha'u'llah
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------------------------------
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From: fyl@eskimo.com (Phil Hughes)
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Subject: Re: Linux Floptical Disk Driver?
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Date: Sat, 24 Sep 1994 02:16:10 GMT
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Oliver Borowiak (root@develop1.psych.nat.tu-bs.de) wrote:
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: a few days ago my 3.5" FDD died, so if have to buy a new one.
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: My thought was why not a Floptical Disk Drive?
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: As I know, the were produced by IOMEGA. These drives can read
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: standard 3.5" 720k, 1.44M, 2.88M disks and the Floptical format
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: of about 21 MB.
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...
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The story of support of Flopticals is a regular one I tell to explain to
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people why Linux is real. Ages ago (close to two years) someone asked on
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the net if they were supported. Within a day someone else posted a note
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that said that they required a special initialization sequence. Then, a
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day later someone else asked where they could get the initialization
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sequence. Then, a few days later there was a post explaining that the
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driver was now patched to support them. A sequence that overall took
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about a week. Expect a year or more from commercial vendors.
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Now, to answer your question: flopticals are SCSI devices. I have never
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used one but there should be special initialization code in the SCSI
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driver to talk to them.
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--
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Phil Hughes, Publisher, Linux Journal (206) 527-3385
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usually phil@ssc.com, sometimes fyl@eskimo.com
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------------------------------
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From: jrichard@cs.uml.edu (John Richardson)
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Subject: Re: elf benchmarks (getting closer)
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Date: 25 Sep 1994 20:09:17 GMT
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In article <363r9m$luo@news.nynexst.com>, H.J. Lu <hjl@nynexst.com> wrote:
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> [times where elf beats a.out]
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I wonder why?
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>
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>No, that is not a typo. ELF may be faster than a.out. But don't take
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>the result as is. 1000000 iterations are too small. The "benchmark"
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>varies a lot for both a.out and ELF. We need a better benchmark for
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>the ELF/PIC library. Also an ELF login shell makes a big diference.
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Wow! I guess I'll compile bash with ELF libraries! When I added
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-fomit-frame-pointer to my compiles of the qsort test I couldn't
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tell the difference between ELF and a.out qsort times.
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Patrick Schaaf (bof@wg.saar.de) mailed me a more scientific benchmark
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but I haven't looked at it yet. I'll forward it to whomever would
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like a look.
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Surely there must be a publicly available benchmark of system library
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calls? If not, I was thinking of writing a quick bench of the
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more popular calls (read, write, open, close, etc) just to see
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how a.out and ELF compare there.
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Awesome work H.J. & co!
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--
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John Richardson
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jrichard@cs.uml.edu
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------------------------------
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From: jeffpk@netcom.com (Jeff Kesselman)
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Subject: Re: Linux on CD
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Date: Sun, 25 Sep 1994 19:14:20 GMT
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In article <35od4d$8jq@senator-bedfellow.mit.edu>,
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<PINKERTONA@delphi.com> wrote:
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>:In article 9tC@pe1chl.ampr.org, rob@pe1chl.ampr.org (Rob Janssen) writes:
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>:=>In <CwDx2M.ww@cs.bsu.edu> fagarcia@cs.bsu.edu writes:
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>:=>
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>:=>>I was having a chat with someone over the net and we came to this..
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>:=>>What if Linux came fully implemented (X & all the disk sets) on a CD and
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>:=>>all you would have to do is boot off the CD rom and have the
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>:=>>settings/option files (ie ~/.seyon inittab & the rc scrips) in your HD.
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>:=>
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>:=>>I mean, this would save a lot of diskspace ;)
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>:=>
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>:=>There are several CD-ROMs available that allow you to do this...
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>:=>
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>:
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>:I can confirm this. I tried it with the TransAmeritech CD, release April 1994.
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>:[DELETED]
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>:I think it's more reasonable to have the often used stuff on your HD, and the
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>:less used stuff you can run from CD-ROM.
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>:
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>:How do other people feel about running from CD-ROM? I do like the idea of
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>:saving HD-space, but it becomes too slow for me to be usable.
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>
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>What I think (for what it's worth) would be useful would be
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>the ability to merge the CD-ROM's directory with the HD's and
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>the HD's files would take precedence. That way if you want to
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>make a change or just want the speed of the HD you could copy
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>the file(s) to the HD in the same spot (directory and file name).
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>Just a vague thought...
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>
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Thsi is how my Yygdrasil works. The stuff that is still on cd-rom exists
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as a link to the cd-rom on the hard-drive. When i install it, it copies
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over the link.
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Jeff kesselman
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------------------------------
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From: danpop@cernapo.cern.ch (Dan Pop)
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Subject: Re: Special Sale On QNX!
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Date: Sun, 25 Sep 1994 22:26:23 GMT
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In <364pfh$knh@martha.utk.edu> williams@martha.utcc.utk.edu (Myles Williams) writes:
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> Florida Datamation has been a QNX distributor for 10 years! We are nice,
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> knowledgable and go the extra mile for the sale. And, we promise to BEAT
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> ANYONE'S PRICE!
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>
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>That's quite a claim in this newsgroup! I wonder how much they are
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>going to pay me.
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>
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Don't wonder too much. Have a look at the headers of the original article:
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Newsgroups: comp.os.linux.development,comp.os.linux.development
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Path: CERN.ch!EU.net!howland.reston.ans.net!swrinde!sgiblab!pacbell.com!att-out!undergrad.math.uwaterloo.ca!zmailer--not-for-mail
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From: scheidel@gate.net ()
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Subject: Special Sale On QNX!
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X-Mail-Message-Id: <849328273928.C72D265@inca.gate.net>
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Message-ID: <CwoFHF.Hxs@undergrad.math.uwaterloo.ca>
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Originator: root@undergrad.math.uwaterloo.ca
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Precedence: normal-delivery
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Sender: news@undergrad.math.uwaterloo.ca (news spool owner)
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Now, is this article coming from Florida or from Waterloo?
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Or is Florida Datamation doing business from the host
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undergrad.math.uwaterloo.ca? :-)
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Dan
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--
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Dan Pop
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CERN, CN Division
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Email: danpop@cernapo.cern.ch
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Mail: CERN - PPE, Bat. 31 R-004, CH-1211 Geneve 23, Switzerland
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------------------------------
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From: mjf@clark.net (Marc Fraioli)
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Subject: Re: elf benchmarks (getting closer)
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Date: 25 Sep 1994 21:09:12 GMT
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Reply-To: mjf@clark.net
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In article luo@news.nynexst.com, hjl@nynexst.com (H.J. Lu) writes:
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>No, that is not a typo. ELF may be faster than a.out. But don't take
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>the result as is. 1000000 iterations are too small. The "benchmark"
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>varies a lot for both a.out and ELF. We need a better benchmark for
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>the ELF/PIC library. Also an ELF login shell makes a big diference.
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>
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If ELF is so much easier to develop with, and it requires significant
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effort to craft a benchmark on which a.out is faster, why bother? I
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vote for ELF.
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---
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Marc Fraioli | "They couldn't hit an elephant at this dist- "
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mjf@clark.net | - Last words of Union General John Sedgwick,
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| Battle of Spotsylvania Court House, U.S. Civil War
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------------------------------
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From: mathias@unicorn.swi.com.sg (Mathias Koerber)
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Subject: Re: NCR 53C406A SCSI
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Date: 24 Sep 1994 07:10:12 GMT
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Reply-To: Mathias.Koerber@swi.com.sg
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In (<35qc63$p9u@csnews.cs.Colorado.EDU>) Drew Eckhardt (drew@frisbee.cs.Colorado.EDU) wrote:
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| In article <35q6ko$bnr@potogold.rmii.com>,
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| Pete Cascio <pete@nuthatch.blackforest.co.us> wrote:
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| >
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| >I've got a Media Vision Pro 3D sound card with SCSI-2. The SCSI-2 chip is an
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| >NCR 53C406A. It looks like it's probably something new, since it's not
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| >mentioned in the SCSI-HOWTO.
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| >Does anyone know about this chip?
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| Sure - the NCR53c406a is a more integrated version of the NCR53c90,
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| very similar to what NCR did with the NCR53c400 which was based on the
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| NCR53c80.
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So, will there ever be a driver for the 53C94? I have such a beast
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(ICL ErgoPro D4/66dXG) smug on the motherboard, and can't use it :-(
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cheers (or no cheers in this case)
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| >Is it compatible (no changes required) with
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| >another supported NCR SCSI chip driver?
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| An alpha NCR53c406a driver is available via anonymous FTP from
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| tsx-11.mit.edu:/pub/linux/ALPHA/scsi/ncr53c406-0.9.patch.gz.
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| --
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| Since our leaders won't respect The Constitution, the highest law of our
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| country, you can't expect them to obey lesser laws of any country.
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| Boycott the United States until this changes.
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--
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Mathias Koerber Tel: +65 / 778 00 66 x 29
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SW International Systems Pte Ltd Fax: +65 / 777 94 01
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14 Science Park Drive #04-01 The Maxwell e-mail: Mathias.Koerber@swi.com.sg
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S'pore 0511 <A HREF=http://www.swi.com.sg/public/personal/mk.html>MK</A>
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When anyone asks me how I can best describe my experience in
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nearly forty years at sea, I merely say, uneventful. Of course
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there have been winter gales, and storms and fog and the like.
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But in all my experience, I have never been in any accident...
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or any sort worth speaking about. I have seen but one vessel
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in distress in all my years at sea. I never saw a wreck and
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never have been wrecked nor was I ever in any predicament that
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threatened to end in disaster of any sort.
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E. J. Smith, 1907
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Captain, RMS Titanic
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------------------------------
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From: rob@pe1chl.ampr.org (Rob Janssen)
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Subject: Re: Special Sale On QNX!
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Reply-To: pe1chl@rabo.nl
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Date: Sun, 25 Sep 1994 22:29:00 GMT
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In <CwoFHF.Hxs@undergrad.math.uwaterloo.ca> scheidel@gate.net () writes:
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>Why settle for slow and obselete Unix such as UnixWare, Sun Solaris,
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>SCO, Linux or BSD when you can have POWER & RELIABILITY with QNX 4.21!
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>Stop playing games with these inferior o/s's and switch to QNX today.
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Hey come on, a bit more humble announcements would be nice!
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Especially from someone who posts the same article twice in the same
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group. Done under QNX, I suppose?
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Rob
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--
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=========================================================================
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| Rob Janssen | AMPRnet: rob@pe1chl.ampr.org |
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| e-mail: pe1chl@rabo.nl | AX.25 BBS: PE1CHL@PI8UTR.#UTR.NLD.EU |
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=========================================================================
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------------------------------
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From: djohnson@seuss.ucsd.edu (Darin Johnson)
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Subject: Re: Don't use Linux?!
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Date: 24 Sep 1994 01:39:16 GMT
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> >One could think
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> >that companies are willing to consider Linux a reasonable and serious
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> >platform, and that they would port and offer their products to the
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> >Linux community. However, they are far away from doing so, actually.
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Wow, this is all very deja-vu, with my experience in the Amiga
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community. It was always "we have X million machines out there,
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why won't they port such-and-such?" or something like that.
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I think the bottom line is that for the really big wizzy msdos
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programs, they won't get ported. Look for alternatives though.
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Number of units doesn't count when you're regarded as a fringe
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group. Hefty contributions can change their mind though, and
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is part of the reason some of this stuff gets ported to major
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unix players.
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> While I agree and disagree in varying amounts with the rest of this message
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> I would like to take agree with the above, in general, but object to the
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> statement that NO commercial companies have or will port their products..
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Here, I must agree. Too often people want MS Word, but they're
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unwilling to consider other word processors.
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The number of Linux sites is *irrelevant* here! When the Amiga
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had fewer number of machines than Linux sites, there were many
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commercial offerings. When there were X million sold, people
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were annoyed that big-name (but low quality) PC companies weren't
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porting their stuff, but failed to note all the great companies
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that were there for the Amiga.
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The point is, work on your grassroots, loyal companies that have
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stuff for Linux rather than complain that Word or Lotus or Autocad
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or whatever the latest rage is hasn't yet been ported.
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> What are we? Chopped Liver?
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In many places, chopped liver is a delicacy. It's an acquired
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taste though.
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However, the biggest trouble Linux has is distribution
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channels. With Amiga, it was simple - you walk into your
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local Amiga store and see what was on the shelves. Companies
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had a distribution channel. With Linux you don't have that.
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You can't walk into most PC stores and get Linux stuff
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(actually, I'm just guessing, since I've never been in one) ,
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and there isn't a company making Linux with the budget to go
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around and convince places to stock this stuff. Linux
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Journal is probably a good advertising place, but mail-order
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is such a pain for most people, and impulse buys are small.
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Perhaps a "Linux Developers Coop" that could produce a
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brochure of products to give to software stores and such.
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--
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Darin Johnson
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djohnson@ucsd.edu
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Ensign, activate the Wesley Crusher!
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------------------------------
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From: mwikholm@at8.abo.fi (Mats 'MaDsen' Wikholm)
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Subject: Re: [STATUS] Linus Floppy Driver Development
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Date: Sun, 25 Sep 1994 23:54:17 GMT
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In article <35ub68$knv@imag.imag.fr> Alain.Knaff@imag.fr writes:
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>Larry Doolittle (doolitt@recycle.cebaf.gov) wrote:
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>[auto mounting a floppy as soon as it is inserted]
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[snip]
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> Unfortunately, this seems to be impossible to do on PC hardware.
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>There are no separate disk change and disk presence indicators
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[snip]
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>a disk is inserted would need to seek endlessly until a disk is
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>inserted. This would make a rather annoying noise, and would probably
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>wear off the stepper motor as well.
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I'm no programmer (yet) so hang me if I'm way off but wouldn't it be
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possible to automagically mount the floppy only when it is accessed. I
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mean that you don't have to have it mounted before you access it so
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when you try to access it the system checks if it is mounted and if it
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isn't it gets mounted. If there's no disk in it you get a flaming
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error.
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--
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. . . mwikholm@at8.abo.fi / win-nt from the people who invented edlin .
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. . . frantzgatan 3 E 25 / apples have meant trouble since eden . .
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. . 20380 abo finland / Linux, the way to get rid of boot viruses . . .
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. @358.(9)21.377.363 / http://at8.abo.fi/~mwikholm/ (under work) . . . .
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------------------------------
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From: williams@martha.utcc.utk.edu (Myles Williams)
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Subject: Re: Special Sale On QNX!
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Date: 25 Sep 1994 17:18:41 -0400
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Florida Datamation has been a QNX distributor for 10 years! We are nice,
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knowledgable and go the extra mile for the sale. And, we promise to BEAT
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ANYONE'S PRICE!
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That's quite a claim in this newsgroup! I wonder how much they are
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going to pay me.
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Myles Williams "When you see me again, it won't be me."
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------------------------------
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From: aeb@cwi.nl (Andries Brouwer)
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Subject: Re: more floppy problems with 1.1.51
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Date: Sun, 25 Sep 1994 21:17:55 GMT
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s0017210@unix1.cc.ysu.edu (Steve DuChene) writes:
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> I applied the patch suggested to floppy.c (changing
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> if(filp->f_mode & 2) to if(filp && (filp->f_mode & 2)) and that
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That was not the patch I suggested. It should be
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if (!filp || (filp->f_mode & 2))
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------------------------------
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From: gat@robotics.jpl.nasa.gov (Erann Gat)
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Subject: Problem building intel gcc
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Date: Wed, 21 Sep 1994 16:37:55 -0800
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While building the Intel gcc (the one with the P5 optimizations) I get
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the following error during the compilation of libgcc2.a:
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[Much stuff deleted]
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_muldi3
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/tmp/cca08836.s: Assembler messages:
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/tmp/cca08836.s:6: Error: Unknown pseudo-op: `.section'
|
|
make: *** [libgcc2.a] Error 1
|
|
|
|
I am using the gnu assembler, version 2.2. Any idea how to get around
|
|
this error?
|
|
|
|
Thanks,
|
|
E.
|
|
|
|
--
|
|
|
|
Erann Gat
|
|
gat@robotics.jpl.nasa.gov
|
|
|
|
------------------------------
|
|
|
|
From: dcflood@u.washington.edu (David Flood)
|
|
Subject: Re: 1.1.51 seg fault on shutdown in _floppy_release
|
|
Date: 25 Sep 1994 22:11:54 GMT
|
|
|
|
evansmp@mb4715.aston.ac.uk (Mark Evans) writes:
|
|
|
|
>What is happening is that floppy_release is being called with filp equal to 0
|
|
>If you apply the following patch umount will no longer blow up.
|
|
|
|
>--- floppy.c.old Wed Sep 21 15:32:04 1994
|
|
>+++ floppy.c Wed Sep 21 15:31:48 1994
|
|
>@@ -2713,7 +2713,7 @@
|
|
> {
|
|
> int drive= DRIVE(inode->i_rdev);
|
|
>
|
|
>- if(filp->f_mode & 2)
|
|
>+ if(filp && (filp->f_mode & 2))
|
|
> fsync_dev(inode->i_rdev);
|
|
> if ( UDRS->fd_ref < 0)
|
|
> UDRS->fd_ref=0;
|
|
|
|
I applied the above patch and now I get the following during shutdown but
|
|
NOT during user execution of umount:
|
|
|
|
Unmounting file systems.....
|
|
floppy: timeout
|
|
floppy I/O error
|
|
dev 0200, sector 2
|
|
Done.
|
|
|
|
This is a known good disk. Just to make sure, I copied the data off,
|
|
re-fdisk'ed it, ran mk2efs on it with block checking, and then ran badblocks
|
|
on it with write (and got an empty list) and finally re-copied the data back
|
|
to it. According to the boot messages, the FDC is a 8272A. The controler
|
|
is a WD1007 floppy/esdi hard drive controler in a 386sx-16 so I don't think
|
|
that bus speed is too high.
|
|
|
|
Anybody got any other ideas? For now I am going to stick with 1.1.50
|
|
|
|
|
|
--
|
|
=============================================================================
|
|
dcflood@u.washington.edu
|
|
|
|
The above opinions are mine alone and do not reflect anyone elses.
|
|
Besides, who wants my opinion anyway?
|
|
=============================================================================
|
|
|
|
------------------------------
|
|
|
|
From: connolly@hal.com (Dan Connolly)
|
|
Subject: Re: elf benchmarks (getting closer)
|
|
Date: 25 Sep 1994 22:18:47 GMT
|
|
|
|
In article <364oto$5fo@clarknet.clark.net> mjf@clark.net (Marc Fraioli) writes:
|
|
|
|
In article luo@news.nynexst.com, hjl@nynexst.com (H.J. Lu) writes:
|
|
>No, that is not a typo. ELF may be faster than a.out. But don't take
|
|
>the result as is. 1000000 iterations are too small. The "benchmark"
|
|
>varies a lot for both a.out and ELF. We need a better benchmark for
|
|
>the ELF/PIC library. Also an ELF login shell makes a big diference.
|
|
>
|
|
If ELF is so much easier to develop with, and it requires significant
|
|
effort to craft a benchmark on which a.out is faster, why bother? I
|
|
vote for ELF.
|
|
|
|
I think I understand the sentiment, and I agree -- ELF looks
|
|
inevitable. But keep in mind that there are others who are
|
|
not so easily convinced...
|
|
|
|
Anyway... I'm learning a lot from seeing some of the benchmarking data
|
|
-- and especially the interpretations. I encourage folks to do more
|
|
and better benchmarking.
|
|
|
|
libc is a fairly important bunch of code to optimize. Perhaps we'll
|
|
find some 1-liner optimization that will make the vast majority of
|
|
linux applications run 5% faster -- or an optimization that will make
|
|
one key application (like gcc) or one key subsystem (like TCP/IP) run
|
|
10% faster. Not likely, but worth the effort, if just for the
|
|
knowledge gained.
|
|
|
|
Dan
|
|
--
|
|
Daniel W. Connolly "We believe in the interconnectedness of all things"
|
|
Software Engineer, Hal Software Systems, OLIAS project (512) 834-9962 x5010
|
|
<connolly@hal.com> http://www.hal.com/%7Econnolly/index.html
|
|
|
|
------------------------------
|
|
|
|
From: softwork@MCS.COM (Bob Salita)
|
|
Subject: Re: Digi Intelligent Boards?
|
|
Date: 23 Sep 1994 14:16:55 -0500
|
|
|
|
Troy DeJongh (troyd@digibd.digibd.com) wrote:
|
|
: ahmed@oea.xs4all.nl (Ahmed Naas) writes:
|
|
|
|
: >madderra@myhost.subdomain.domain wrote:
|
|
: > ^^^^^^^^^^^^^^^^^^^^^^^
|
|
: >You need to change this :-)
|
|
|
|
: >: I visited the Digiboard display at Interop this week, and was told by one
|
|
: >: of the sales reps that Digiboard was getting pressure from SCO not to
|
|
: >: promote the creation of new drivers for Linux. In particular, I was
|
|
: >: asking about thier new ISDN board they had on display.
|
|
|
|
: >That might be true, but what possible leverage does SCO have over Digi?
|
|
|
|
: >: --Bob
|
|
|
|
: >--
|
|
: >The above is a result of random neuron activity in the writer's brain.
|
|
: >Ahmed M. Naas ahmed@oea.xs4all.nl
|
|
: >----------------------------------------------------------------------
|
|
|
|
: Well, I'm responsible for the maintenance/development of our SCO serial
|
|
: drivers and the development of the Linux driver for our PC/Xe product,
|
|
: and I haven't heard anything like that yet. Plans are to release a
|
|
: Linux driver for our PC/Xe line of products this fall.
|
|
|
|
|
|
: --
|
|
: Troy De Jongh Digiboard (troyd@digibd.com)
|
|
|
|
Troy, do you know of any plans for isdn drivers for digiboards stuff?
|
|
|
|
What do the progressive Digiboard marketing people think about Linux?
|
|
|
|
Bob
|
|
|
|
------------------------------
|
|
|
|
|
|
** FOR YOUR REFERENCE **
|
|
|
|
The service address, to which questions about the list itself and requests
|
|
to be added to or deleted from it should be directed, is:
|
|
|
|
Internet: Linux-Development-Request@NEWS-DIGESTS.MIT.EDU
|
|
|
|
You can send mail to the entire list (and comp.os.linux.development) via:
|
|
|
|
Internet: Linux-Development@NEWS-DIGESTS.MIT.EDU
|
|
|
|
Linux may be obtained via one of these FTP sites:
|
|
nic.funet.fi pub/OS/Linux
|
|
tsx-11.mit.edu pub/linux
|
|
sunsite.unc.edu pub/Linux
|
|
|
|
End of Linux-Development Digest
|
|
******************************
|