Date: Sun, 9 Sep 2012 07:20:14 GMT From: Mark Johnston <markjdb@gmail.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/170627: Kernel memory leak when polling cpu temperature via coretemp kernel module.] Message-ID: <201209090720.q897KEv8063960@freefall.freebsd.org>
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The following reply was made to PR kern/170627; it has been noted by GNATS. From: Mark Johnston <markjdb@gmail.com> To: bug-followup@freebsd.org Cc: Subject: Re: kern/170627: Kernel memory leak when polling cpu temperature via coretemp kernel module.] Date: Sun, 9 Sep 2012 03:17:31 -0400 Forwarding so that this gets logged. The PR can be closed. ----- Forwarded message from Remme <adscomplex@gmail.com> ----- Date: Sun, 9 Sep 2012 09:39:01 +0300 From: Remme <adscomplex@gmail.com> To: Mark Johnston <markjdb@gmail.com> Subject: Re: kern/170627: Kernel memory leak when polling cpu temperature via coretemp kernel module. Hi Mark, Please cancel this report. Sorry for taking your time - but at the first sight coretemp was the reason. (Module unload fixed a problem - but only for a first 12-24 hours.). The reason for panic was a sphinxsearch (searchd). At this moment we are downgraded it to 0.9.9 and this seems solved a kernel panic problem. But we still have a growing active memory issue. Thank you for your time and attention. WBR, Max. On Sun, Sep 9, 2012 at 2:16 AM, Mark Johnston <markjdb@gmail.com> wrote: > Hi Max, > > Why do you think that coretemp is causing the memory leak? As far as I > can see, polling the coretemp sysctls shouldn't cause any memory to be > allocated at all - coretemp basically just reads a bunch of MSRs. Just > for fun, I tried running something like > > while true; do > for n in $(jot - 0 $(sysctl -n hw.ncpu)); do > sysctl -q dev.cpu.${n}.temperature >/dev/null 2>&1 > sysctl -q dev.cpu.${n}.coretemp >/dev/null 2>&1 > done > done > > for a few hours and didn't see any problems. > > What panic are you getting? How exactly are polling the temperature > sensors - which sysctls are you reading? > > Thanks, > -Mark > ----- End forwarded message -----
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