Re: [HACKERS] Speed up Clog Access by increasing CLOG buffers - Mailing list pgsql-hackers

From Amit Kapila
Subject Re: [HACKERS] Speed up Clog Access by increasing CLOG buffers
Date
Msg-id CAA4eK1KudxzgWhuywY_X=yeSAhJMT4DwCjroV5Ay60xaeB2Eew@mail.gmail.com
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In response to Re: [HACKERS] Speed up Clog Access by increasing CLOG buffers  (Amit Kapila <amit.kapila16@gmail.com>)
Responses Re: [HACKERS] Speed up Clog Access by increasing CLOG buffers
List pgsql-hackers
On Mon, Jul 3, 2017 at 6:15 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> On Thu, Mar 23, 2017 at 1:18 PM, Ashutosh Sharma <ashu.coek88@gmail.com>
> wrote:
>>
>> Conclusion:
>> As seen from the test results mentioned above, there is some performance
>> improvement with 3 SP(s), with 5 SP(s) the results with patch is slightly
>> better than HEAD, with 7 and 10 SP(s) we do see regression with patch.
>> Therefore, I think the threshold value of 4 for number of subtransactions
>> considered in the patch looks fine to me.
>>
>
> Thanks for the tests.  Attached find the rebased patch on HEAD.  I have ran
> latest pgindent on patch.  I have yet to add wait event for group lock waits
> in this patch as is done by Robert in commit
> d4116a771925379c33cf4c6634ca620ed08b551d for ProcArrayGroupUpdate.
>

I have updated the patch to support wait events and moved it to upcoming CF.

-- 
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com

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