| From: | Josh Berkus <josh(at)agliodbs(dot)com> |
|---|---|
| To: | Steve Crawford <scrawford(at)pinpointresearch(dot)com>, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>, Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>, "Graeme B(dot) Bell" <grb(at)skogoglandskap(dot)no> |
| Subject: | Re: Turn off Hyperthreading! WAS: 60 core performance with 9.3 |
| Date: | 2014-08-21 23:29:27 |
| Message-ID: | 53F680D7.6030208@agliodbs.com |
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| Thread: | |
| Lists: | pgsql-performance |
On 08/21/2014 04:08 PM, Steve Crawford wrote:
> On 08/21/2014 03:51 PM, Josh Berkus wrote:
>> On 08/21/2014 02:26 PM, Scott Marlowe wrote:
>>> I'm running almost the exact same setup in production as a spare. It
>>> has 4 of those CPUs, 256G RAM, and is currently set to use HT. Since
>>> it's a spare node I might be able to do some testing on it as well.
>>> It's running a 3.2 kernel right now. I could probably get a later
>>> model kernel on it even.
>> You know about the IO performance issues with 3.2, yes?
>>
> Were those 3.2 only and since fixed or are there issues persisting in
> 3.2+? The 12.04 LTS release of Ubuntu Server was 3.2 but the 14.04 is 3.13.
The issues I know of were fixed in 3.9.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com
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