> Someone commented they think it might be related to this kernel bug:
>
> https://lkml.org/lkml/2012/10/9/210
>
We have some evidence that that is the case.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql
On 27/02/2013 9:29 AM, Josh Berkus wrote:
Andre,
Please see the related thread on this list, "High CPU usage / load
average after upgrading to Ubuntu 12.04". You may be experiencing some
of the same issues. General perspective seems to be that kernels 3.0
through 3.4 have serious performance i
On Tue, Feb 26, 2013 at 4:29 PM, Josh Berkus wrote:
> Andre,
>
> Please see the related thread on this list, "High CPU usage / load
> average after upgrading to Ubuntu 12.04". You may be experiencing some
> of the same issues. General perspective seems to be that kernels 3.0
> through 3.4 have s
Andre,
Please see the related thread on this list, "High CPU usage / load
average after upgrading to Ubuntu 12.04". You may be experiencing some
of the same issues. General perspective seems to be that kernels 3.0
through 3.4 have serious performance issues.
--
Josh Berkus
PostgreSQL Experts
On 25/02/2013 12:45 AM, Tom Lane wrote:
Odd. I wonder if you are seeing some variant of the old context swap storm problem. The "99.8% system time" reading is suggestive but hardly conclusive. Does top's report of context swap rate go to the moon? It would be interesting to strace a few of the ser
On Sun, Feb 24, 2013 at 7:08 AM, Andre wrote:
> Hi,
> Since our upgrade of hardware, OS and Postgres we experience server stalls
> under certain conditions, during that time (up to 2 minutes) all CPUs show
> 100% system time. All Postgres processes show BIND in top.
> Usually the server only has a
Andre writes:
> Since our upgrade of hardware, OS and Postgres we experience server stalls
> under certain conditions, during that time (up to 2 minutes) all CPUs show
> 100% system time. All Postgres processes show BIND in top.
Odd. I wonder if you are seeing some variant of the old context s
On 25/02/2013 12:13 AM, Bèrto ëd Sèra wrote:
and your /etc/sysctl.conf is?
/etc/sysctl.conf only had unrelated options set, here is the output of sysctl
-a:
abi.vsyscall32 = 1
debug.exception-trace = 1
dev.hpet.max-user-freq = 64
kernel.acct = 4230
kernel.acpi_video_flags = 0
kernel.
and your /etc/sysctl.conf is?
Cheers
Bèrto
On 24 February 2013 14:08, Andre wrote:
> Hi,
> Since our upgrade of hardware, OS and Postgres we experience server stalls
> under certain conditions, during that time (up to 2 minutes) all CPUs show
> 100% system time. All Postgres processes show BIND
