On 7/31/06, Matthias Andree <[email protected]> wrote:
Adrian Ulrich wrote:
> See also: http://spam.workaround.ch/dull/postmark.txt
>
> A quick'n'dirty ZFS-vs-UFS-vs-Reiser3-vs-Reiser4-vs-Ext3 'benchmark'
Whatever Postmark does, this looks pretty besides the point.
why's that? postmark is one of the standard benchmarks...
Are these actual transactions with the "D"urability guarantee?
3000/s doesn't look too much like you're doing synchronous I/O (else
figures around 70/s perhaps 100/s would be more adequate), and cache
exercise is rather irrelevant for databases that manage real (=valuable)
data...
Data:
204.62 megabytes read (8.53 megabytes per second)
271.49 megabytes written (11.31 megabytes per second)
looks pretty I/O bound to me, 11.31 MB/s isn't exactly your latest DDR
RAM bandwidth. as far as the synchronous I/O question, Reiser4 in
this case acts more like a log-based FS. That allows it to "overlap"
synchronous operations that are being submitted by multiple threads.
NATE
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