wired memory leak at r298785
swills at FreeBSD.org
Tue May 3 06:03:04 UTC 2016
On 05/ 2/16 11:24 PM, Warner Losh wrote:
> On Mon, May 2, 2016 at 6:55 PM, Steve Wills <swills at freebsd.org
> <mailto:swills at freebsd.org>> wrote:
> On 05/ 2/16 09:32 AM, Steve Wills wrote:
> > Hi,
> > Just did my monthly update and r298785 seems to be leaking wired
> > rather rapidly. My system has 8gb of RAM and the amount of wired
> > just goes up and up continuously. It takes about 12 hours before it
> > exhausts all the RAM and sort of locks up (though shutdown still
> > I also made one other change to the system at the same time as
> > which was to add another disk and configure it using ZFS. Perhaps this
> > is a ZFS on PowerPC64 issue? My amd64 box running the same rev of
> > CURRENT doesn't have the issue.
> I've rebooted the box and started repeatedly logging the output of
> vmstat -m. It seems to show CAM CCB using a lot of memory and growing
> rather rapidly. For example, here's a few lines of diff output:
> - CAM CCB 91418 182836K - 187149 2048
> + CAM CCB 447070 894140K - 900292 2048
> from two samples that are 60 minutes apart.
> The box is isn't terribly busy, it's just running the monitoring daemons
> running (snmpd, collectd), whatever web requests are hitting it (very
> few if any), this logging process, and my shell, etc.
> Could this be related to recent changes in CURRENT?
> Copying Scott and Warner in case they have comments on this since I'm
> told they have been active in this area recently.
> I've been looking into it. I'm not sure what's up since I don't see it
> in production. I'll give it a bump in priority though.
Thanks! I did notice that killing bsnmpd drastically slowed the rate of
growth, but didn't completely eliminate it.
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