On Fri, 2009-08-14 at 23:36 +0200, Andreas Schwab wrote:
> Laurent GUERBY <laur...@guerby.net> writes:
> 
> > Any idea of why /bin/sh is running stuff in parallel instead
> > of sequential? 
> 
> Have you tried set -x?

IIRC I tried at first but it didn't gave me useful information,
everything looked "normal", then I switched to more invasive
logging including three "ps fauxww" and "ls -l".

On the statistical side over the past three monthes there were 17
occurrences of this issue:

-rw-r--r-- 1 guerby guerby  29623 2009-05-21 18:05 
psfauxw1-c48004d-20090521T180512
-rw-r--r-- 1 guerby guerby  36904 2009-05-21 22:57 
psfauxw1-d4a002b-20090521T225738
-rw-r--r-- 1 guerby guerby  31810 2009-05-23 21:45 
psfauxw1-d4a002b-20090523T214538
-rw-r--r-- 1 guerby guerby  29774 2009-05-29 05:15 
psfauxw1-d4a002b-20090529T051533
-rw-r--r-- 1 guerby guerby  30467 2009-07-02 17:06 
psfauxw1-cxaa005-20090702T170643
-rw-r--r-- 1 guerby guerby  64559 2009-07-03 08:15 
psfauxw1-cxaa017-20090703T081509
-rw-r--r-- 1 guerby guerby  30227 2009-07-03 13:13 
psfauxw1-d4a002a-20090703T131307
-rw-r--r-- 1 guerby guerby  30280 2009-07-03 22:43 
psfauxw1-cb3003a-20090703T224359
-rw-r--r-- 1 guerby guerby  29442 2009-07-12 03:57 
psfauxw1-cb1001a-20090712T035707
-rw-r--r-- 1 guerby guerby  30361 2009-07-23 03:33 
psfauxw1-cb20a02-20090723T033340
-rw-r--r-- 1 guerby guerby  30361 2009-07-23 03:42 
psfauxw1-cz1103a-20090723T034235
-rw-r--r-- 1 guerby guerby  30443 2009-07-27 01:02 
psfauxw1-c48004d-20090727T010248
-rw-r--r-- 1 guerby guerby  30112 2009-07-30 02:03 
psfauxw1-cz1102a-20090730T020304
-rw-r--r-- 1 guerby guerby  34507 2009-08-02 04:34 
psfauxw1-cd1009o-20090802T043428
-rw-r--r-- 1 guerby guerby  37807 2009-08-08 11:08 
psfauxw1-d4a002a-20090808T110858
-rw-r--r-- 1 guerby guerby  38340 2009-08-09 16:52 
psfauxw1-c48004d-20090809T165214
-rw-r--r-- 1 guerby guerby  38319 2009-08-13 20:28 
psfauxw1-c48005b-20090813T202815

Since the machine runs on average 5 bootstrap+check a day and that ACATS
has 2315 tests, it's a rate of failure of ~ 17 per one million individual test 
run.
But it's at least one spurious FAIL in about 4% of bootstrap+check.

Laurent



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