Messages in this thread | | | Date | Sat, 19 Sep 2009 07:40:01 +0200 (CEST) | From | Tobias Oetiker <> | Subject | Re: announce: fsopbench - filesystem operations benchmark |
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Yesterday david@lang.hm wrote:
> On Fri, 18 Sep 2009, Tobi Oetiker wrote: > > > Hi David, > > > > Today david@lang.hm wrote: > > > > > On Fri, 18 Sep 2009, Tobias Oetiker wrote: > > > > > > > > > > > http://oss.oetiker.ch/optools/wiki/fsopbench > > > > > > > > It shows similar results on all configurations I have tested. > > > > In the example below you see: > > > > > > > > * lstat: 10 times slower > > > > * reading the first byte of a file: 80 times slower > > > > * reading a directory entry: 16 times slower > > > > * read rate: 40 times lower > > > > > > lower and slower than what? > > > > reading on an idle system vs reading on a system where writer > > processees are active ... > > as a user I would expect that a disk that is busy being written to will be > slower to read from. > > what would you expect to happen in this situation?
sure, the question is how much slower ... 40 times slower speed and 80 times slower response time is a bit much I would say ...
half the speed and half the response time would be what I would expect ... but then thats just me ...
cheers tobi -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland http://it.oetiker.ch tobi@oetiker.ch ++41 62 775 9902 / sb: -9900
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