From help-request at octave dot org Tue Nov 16 19:16:22 2004
Subject: Re: 5th anniversary of buggy system/popepn/popen2
From: "Dmitri A. Sergatskov" <dmitri at unm dot edu>
To: Miroslaw Kwasniak <mirek at zind dot ikem dot pwr dot wroc dot pl>
CC: help at octave dot org
Date: Tue, 16 Nov 2004 18:13:34 -0700

Miroslaw Kwasniak wrote:

> How long sequence of dots you've seen. I had sometimes >100 and at another run
> only 2.

Here is one sequence (all interruptions of the dots caused by me hitting Ctrl-C):
3679
1690
820
459
324
64
67
323
101
406
84
169
13
Killed

This is on 2xAthlonMP, 1 GB, Fedora Core 3, glibc-2.3.3, kernel-2.6.9-1.667, gcc-3.4.2-6.fc3,
octave-2.1.62.
Similar results on AthlonXP/ 500 MB (same software).
I am running it as we speak on 2xPPro 200 MHz w/ RH9 (kernel-2.4.20-35.9.legacy, glibc-2.3.2,
gcc-3.2.2, octave-2.1.57) and it does not show any problems either.
It does show problems on Sparc Solaris 8 (octave-2.1.59, gcc-3.3.3)

[dima at kochia octave]$ ./lsxsun.sh
.... 4
................ 16
............ 12
............... 15
.... 4
. 1
.... 4
................................... 35
....................... 23
..... 5
......... 9
................ 16
. 1
...... 6
........... 11
............ 12
.. 2
............ 12
.......... 10
. 1
........ 8
..................panic: alarm clock -- stopping myself...
./lsxsun.sh: line 1: 11218 Done                    echo "$LS"
      11219 Alarm Clock             | octave -q
-----------
racecheck report on Solaris:

report =

   21   1   2   3   4
    1   2   0  21  21
    2   0   0  21  21


>>Sometimes it just dies half-way through (returns to octave prompt) and does 
>>not
>>give the final "report" output.
> 
> 
> Can you provide at which poit it crashes?

It rather random half way through the running output:

4 2   4400     86560octave>

(I made up the numbers here)

I did not save the output and I could not get it to crash anymore...

> 
> A try if pause works with popen2:
> 
>   [i,o,p]=popen2('/bin/ls'); pause(5), 1
> 
> on my comp it display 1 without a delay :(

It works on Sun (there is a delay) and does not (no delay) on either linux.

> 
> 
> Mirek
> 
> 

Hope it helps.

Sincerely,

Dmitri.
-- 



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