Re: large object write performance

From: "Graeme B(dot) Bell" <graeme(dot)bell(at)nibio(dot)no>
To: Bram Van Steenlandt <bram(at)diomedia(dot)be>
Cc: "Graeme B(dot) Bell" <graeme(dot)bell(at)nibio(dot)no>, "pgsql-performance(at)postgresql(dot)org list" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: large object write performance
Date: 2015-10-08 11:37:41
Message-ID: 093D3870-D64D-4180-892A-42F06DAE5A15@skogoglandskap.no
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>>
>>
> Like this ?
>
> gmirror (iozone -s 4 -a /dev/mirror/gm0s1e) = 806376 (faster drives)
> zfs uncompressed (iozone -s 4 -a /datapool/data) = 650136
> zfs compressed (iozone -s 4 -a /datapool/data) = 676345

If you can get the complete tables (as in the images on the blog post) with random performance compared to sequential etc, different block sizes, that would be very interesting.

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