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From: Jesper Pedersen <jesper.pedersen@redhat.com>
To: Amit Kapila <amit.kapila16@gmail.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Subject: Re: Speed up Clog Access by increasing CLOG buffers
Date: Mon, 21 Sep 2015 08:55:45 -0400
Message-ID: <55FFFE51.1060308@redhat.com> (raw)
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On 09/18/2015 11:11 PM, Amit Kapila wrote:
>> I have done various runs on an Intel Xeon 28C/56T w/ 256Gb mem and 2 x
>> RAID10 SSD (data + xlog) with Min(64,).
>>
>>
> The benefit with this patch could be seen at somewhat higher
> client-count as you can see in my initial mail, can you please
> once try with client count > 64?
>

Client count were from 1 to 80.

I did do one run with Min(128,) like you, but didn't see any difference 
in the result compared to Min(64,), so focused instead in the 
sync_commit on/off testing case.

Best regards,
  Jesper



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