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Re: Load distributed checkpoint

From: "Inaam Rana" <inaamrana(at)gmail(dot)com>
To: "Takayuki Tsunakawa" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>
Cc: "ITAGAKI Takahiro" <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Load distributed checkpoint
Date: 2006-12-22 07:48:27
Message-ID: 833c669b0612212348w701a1c9dh57ad7796c14f0374@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
On 12/22/06, Takayuki Tsunakawa <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com> wrote:
>
> From: "Takayuki Tsunakawa" <tsunakawa(dot)takay(at)jp(dot)fujitsu(dot)com>
> > (5) (4) + /proc/sys/vm/dirty* tuning
> > dirty_background_ratio is changed from 10 to 1, and dirty_ratio is
> > changed from 40 to 4.
> >
> > 308  349  84  349  84
>
> Sorry, I forgot to include the result when using Itagaki-san's patch.
> The patch showd the following tps for case (5).
>
> 323  350  340  59  225
>
> The best response time was 4 msec, and the worst one was 16 seconds.
>
>

Which IO Shceduler (elevator) you are using?

-- 
Inaam Rana
EnterpriseDB   http://www.enterprisedb.com

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