Re: Compression of full-page-writes

From: Haribabu kommi <haribabu(dot)kommi(at)huawei(dot)com>
To: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
Cc: KONDO Mitsumasa <kondo(dot)mitsumasa(at)lab(dot)ntt(dot)co(dot)jp>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Compression of full-page-writes
Date: 2013-10-11 07:09:39
Message-ID: 8977CB36860C5843884E0A18D8747B0372BC8420@szxeml558-mbs.china.huawei.com
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On 10 October 2013 23:06 Fujii Masao wrote:
>On Wed, Oct 9, 2013 at 1:35 PM, Haribabu kommi <haribabu(dot)kommi(at)huawei(dot)com> wrote:
>> Thread-1 Threads-2
>> Head code FPW compress Head code FPW compress
>> Pgbench-org 5min 138(0.24GB) 131(0.04GB) 160(0.28GB) 163(0.05GB)
>> Pgbench-1000 5min 140(0.29GB) 128(0.03GB) 160(0.33GB) 162(0.02GB)
>> Pgbench-org 15min 141(0.59GB) 136(0.12GB) 160(0.65GB) 162(0.14GB)
>> Pgbench-1000 15min 138(0.81GB) 134(0.11GB) 159(0.92GB) 162(0.18GB)
>>
>> Pgbench-org - original pgbench
>> Pgbench-1000 - changed pgbench with a record size of 1000.

>This means that you changed the data type of pgbench_accounts.filler to char(1000)?

Yes, I changed the filler column as char(1000).

Regards,
Hari babu.

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