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st: Strange behaviour of Stata 11 under GNU/Linux
From
Neil Shephard <[email protected]>
To
[email protected]
Subject
st: Strange behaviour of Stata 11 under GNU/Linux
Date
Fri, 30 Jul 2010 10:02:12 +0000
I was wondering if anyone else can replicate the following (strange)
behaviour of Stata 11.1 under GNU/Linux (or any other OS).
Hitting 'Ctrl + w' causes Stata to hang, using ~97-100% of one CPU and
has to be killed.
System Info
===========
. about
Stata/IC 11.1 for Unix (Linux 64-bit x86-64)
Born 16 Jun 2010
Copyright (C) 2009 StataCorp LP
Single-user Stata perpetual license:
Serial number: *******************
Licensed to: Neil Shephard
ScHARR, University of Sheffield
Kernel version...
$ uname -a
Linux morgan 2.6.34-gentoo-r2 #4 SMP Thu Jul 29 13:25:22 GMT 2010
x86_64 Intel(R) Core(TM)2 Duo CPU E8500 @ 3.16GHz GenuineIntel
GNU/Linux
GTK version...
$ eix -I gtk+
[I] x11-libs/gtk+
Available versions:
(1) 1.2.10-r12
(2) 2.16.6 2.18.6 2.18.7 2.18.9 (~)2.20.1-r1
{aqua cups debug doc +introspection jpeg jpeg2k linguas_az linguas_ca
linguas_cs linguas_da linguas_de linguas_el linguas_es linguas_et
linguas_eu linguas_fi linguas_fr linguas_ga linguas_gl linguas_hr
linguas_hu linguas_it linguas_ja linguas_ko linguas_lt linguas_nl
linguas_nn linguas_no linguas_pl linguas_pt linguas_pt_BR linguas_ro
linguas_ru linguas_sk linguas_sl linguas_sr linguas_sv linguas_tr
linguas_uk linguas_vi nls test tiff vim-syntax xinerama}
Installed versions: 2.20.1-r1(2)(09:45:44 15/07/10)(cups jpeg
tiff -aqua -debug -doc -introspection -jpeg2k -test -vim-syntax
-xinerama)
Homepage: http://www.gtk.org/
Description: Gimp ToolKit +
Background
=========
'Ctrl + w' at a command prompt deletes back to the previous space in
the current command line. I accidentally hit this whilst focused on
Stata as opposed to a terminal and immediately Stata 'hung' and the
CPU graph in the task bar went to 50% (NB Its a dual core system hence
the graph showed 50% usage as this is IC Stata as opposed to MP, a
check of -top- showed xstata to be using all the resources, see
below).
top - 09:52:11 up 20:06, 4 users, load average: 0.43, 0.27, 0.17
Tasks: 144 total, 2 running, 141 sleeping, 0 stopped, 1 zombie
Cpu(s): 52.6%us, 1.0%sy, 0.0%ni, 46.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2011168k total, 1623936k used, 387232k free, 46724k buffers
Swap: 0k total, 0k used, 0k free, 723056k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
14677 neil 20 0 284m 41m 6244 R 99 2.1 0:34.58 xstata
2947 neil 20 0 175m 34m 6040 S 3 1.8 44:09.99 npviewer.bin
2341 root 20 0 137m 28m 6976 S 1 1.4 68:19.84 X
2401 mpd 20 0 218m 8560 2860 S 1 0.4 0:42.73 mpd
2657 neil 20 0 1060m 442m 23m S 1 22.5 41:12.42 firefox
2665 neil 20 0 130m 6804 5276 S 1 0.3 2:21.19 xfce4-cpugraph-
2681 neil 20 0 316m 14m 8784 S 1 0.7 0:02.99 Terminal
Strange behaviour I thought, so before posting thought I'd see if it
was an artefact of the data that I had loaded/process I'd run by
starting a fresh session of xstata. After a fresh start 'Ctrl + w'
had no effect, however, if I 'cd ~/tmp' and _then_ 'Ctrl + w' the
behaviour described above is replicated and Stata hangs. No data was
loaded, nor any other commands used other than -cd- to change the
current working directory.
In typing this I have switched desktops and focus has moved away from
the Stata window, and after a few minutes the CPU usage drops back to
zero, but Stata is still hanging and no typing can be done. If I
return to the desktop with Stata on and focus back on the window, CPU
usage goes back up to 97-100% maxing out one of the processors.
I thought I'd check to see if any more information could be obtained
when launching xstata from a terminal, but there was none. The
behaviour is not observed in the CLI version either.
All very strange,
Neil
--
"... no scientific worker has a fixed level of significance at which
from year to year, and in all circumstances, he rejects hypotheses; he
rather gives his mind to each particular case in the light of his
evidence and his ideas." - Sir Ronald A. Fisher (1956)
Email - [email protected]
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