From: | Hans-Jürgen Schönig <postgres(at)cybertec(dot)at> |
---|---|
To: | Neil Conway <neilc(at)samurai(dot)com>, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: [GENERAL] Performance while loading data and indexing |
Date: | 2002-09-26 20:55:30 |
Message-ID: | 3D937442.40902@cybertec.at |
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Lists: | pgsql-general pgsql-hackers pgsql-performance |
I have seen various benchmarks where XFS seems to perform best when it
comes to huge amounts of data and many files (due to balanced internal
b+ trees).
also, XFS seems to be VERY mature and very stable.
ext2/3 don't seem to be that fast in most of the benchmarks.
i did some testing with reiser some time ago. the problem is that it
seems to restore a very historic consistent snapshot of the data. XFS
seems to be much better in this respect.
i have not tested JFS yet (but on this damn AIX beside me)
from my point of view i strongly recommend XFS (maybe somebody from
RedHat should think about it).
Hans
Neil Conway wrote:
>Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
>
>
>>The paper does recommend ext3, but the differences between file systems
>>are very small.
>>
>>
>
>Well, I only did a very rough benchmark (a few runs of pgbench), but
>the results I found were drastically different: ext2 was significantly
>faster (~50%) than ext3-writeback, which was in turn significantly
>faster (~25%) than ext3-ordered.
>
>
>
>>Also, though ext3 is slower, turning fsync off should make ext3 function
>>similar to ext2.
>>
>>
>
>Why would that be?
>
>Cheers,
>
>Neil
>
>
>
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