Messages in this thread | | | Date | Wed, 22 Nov 2000 23:28:12 +0100 | From | Michael Marxmeier <> | Subject | Re: e2fs performance as function of block size |
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Alan Cox wrote: > I see higher performance with 4K block sizes. I should see higher > latency too but have never been able to measure it. Maybe it depends > on the file system. > It certainly depends on the nature of requests
If the files get somewhat bigger (eg. > 1G) having a bigger block size also greatly reduces the ext2 overhead. Especially fsync() used to be really bad on big file but choosing a bigger block size changed a lot.
If the database used by the original poster is based on something like c-isam then (AFAIR) it is in fact using 1k blocks which may explain the better results of 1k block size. With a 100 MB file size fs management overhead should not be that visible.
Michael
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