[Dovecot] imap core dumping on signal 10
hoogendyk at bio.umass.edu
Sun Jul 25 19:04:44 EEST 2010
Timo Sirainen wrote:
> On Wed, 2010-07-21 at 13:52 -0400, Chris Hoogendyk wrote:
>> Once I got rid of the optimization (it still has -O) within that
>> subdirectory of the source, I can't get it to fail. It seems to be just
> If you enable optimizations again, does it start breaking? Instead of
> the gdb prints, I could also give a patch to make it log the same
> I've anyway been running Dovecot on Solaris/Sparc for years and I
> haven't gotten this same signal 10, even though this is in the generic
> index file handling code..
Sorry for the delay in responding. We switched servers and were totally
caught up in the switch and getting things worked out through the end of
Friday. Recovered now. The server is in full service now. Still some
glitches to be worked out.
Anyway, the testing I did with Dovecot before we went into production
was a bit hurried. When we went into production, there were other
components doing the same thing with signal 10 and core dumping. I went
back and recompiled all of Dovecot with optimization dropped back to -O
only. Then everything worked, and it has proved to be one of the faster,
more reliable pieces of the transition.
I should note that we are using gccfss, and I had been using -g -fast in
my build environment. That -fast translates into a couple of different
things. Anyway, gccfss is the CoolTools implementation that is a gcc
front end to the Sun Studio backend. So, the actual code generation is
being done with Sun Studio, even though the front end is gcc, gnu make,
etc. I also had -xtarget=ultraT2. So our environment may be different
from your past experience with Solaris/Sparc.
Since we are now in production, we can't do any tests to see if they
re-introduce errors. I think it's pretty clear that the -O2 and -fast
with gccfss caused problems.
O__ ---- Systems Administrator
c/ /'_ --- Biology & Geology Departments
(*) \(*) -- 140 Morrill Science Center
~~~~~~~~~~ - University of Massachusetts, Amherst
<hoogendyk at bio.umass.edu>
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