| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: High CPU usage / load average after upgrading to Ubuntu 12.04 |
| Date: | 2013-02-14 00:25:52 |
| Message-ID: | 511C2F10.3080409@agliodbs.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
On 02/13/2013 11:24 AM, Josh Berkus wrote:
> On 02/12/2013 05:28 PM, Dan Kogan wrote:
>> Hi Will,
>>
>> Yes, I think we've seen some discussions on that. Our servers our hosted on Amazon Ec2 and upgrading the kernel does not seem so straight forward.
>> We did a benchmark using pgbench on 3.5 vs 3.2 and saw an improvement. Unfortunately our production server would not boot off 3.5 so we had to revert back to 3.2.
>>
>> At this point we are contemplating whether it's better to go back to 11.04 or upgrade to 12.10 (which comes with kernel version 3.5).
>> Any thoughts on that would be appreciated.
>
> I have a machine running the same version of Ubuntu. I'll run some
> tests and tell you what I find.
So I'm running a pgbench. However, I don't really have anything to
compare the stats I'm seeing. CPU usage and load average was high (load
7.9), but that was on -j 8 -c 32, with a TPS of 8500.
What numbers are you seeing, exactly?
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
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