Unexplainable behaviour after upgrading from 9.1 to 10.0
adrian at freebsd.org
Sat Jul 19 01:14:28 UTC 2014
Try updating to stable/10; I believe alc@ fixed a bunch of VM related
issues that made it into FreeBSD 10.0-REL.
On 18 July 2014 05:10, Tommy Scheunemann <net at arrishq.net> wrote:
> Hello @list,
> back in February this year I did an upgrade from 9.1-RELEASE to
> Recompiled all ports (of course), using the same options as before. Also the
> configuration is exactly the same - both of base and ports.
> Still since then, and following all updates up to 10.0-RELEASE-p7, the
> system has increasingly way more load.
> Example top output:
> last pid: 44452; load averages: 0.57, 0.46, 0.42
> up 0+02:07:00 14:02:29
> 75 processes: 1 running, 74 sleeping
> CPU: 0.4% user, 0.0% nice, 0.6% system, 0.2% interrupt, 98.9% idle
> Mem: 691M Active, 1803M Inact, 119M Wired, 8988K Cache, 94M Buf, 138M Free
> Swap: 2048M Total, 15M Used, 2033M Free
> The OS starts swapping out processes while there's still memory available,
> as example Nginx (which acts as reverse proxy), php-fpm processes and a
> couple of other instead of just keeping them in memory.
> This behaviour is the same using the GENERIC kernel as well as a
> self-compiled one (Xen drivers removed, unused NIC drivers, VirtIO and USB
> The hardware is of course the same as before so physically nothing changed.
> Short after rebooting swap isn't used, though the longer the system runs the
> more swap is used, up to around 900 MB e.g. by swapping MySQL.
> The system itself is an i386 FreeBSD 10.0-RELEASE, 2 GB RAM, 2 SATA drivers
> using a Gmirror.
> The attached images show the difference in the entire system behaviour,
> while the traffic the webserver gets, things MySQL should do, mails Postfix
> sends and recieves didn't changed.
> Just let the webserver deliver something takes of course more time, since
> the process seems to run from swap.
> Maybe interesting the sysctl.conf.local:
> Which is the same as under 9.1
> Anything else I can do to let the kernel stop swapping out processes without
> much need ?
> And of course if one needs more information, really no problem.
> Would just like to get this issue solved before moving along with 10.0 on
> the way more critical machines.
> Thanks in advance
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