Messages in this thread | | | Date | Mon, 13 Mar 2006 10:15:28 -0800 | From | Hans Reiser <> | Subject | Re: Readahead value 128K? (was Re: Drastic Slowdown of 'fseek()' Calls From 2.4 to 2.6 -- VMM Change?) |
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Ulrich, what are your plans regarding fixing this? Are you just going to ignore it or?
Hans
Mark Lord wrote:
> Marr wrote: > >> >> Anyway, not that it really matters, but I re-did the testing with >> '-a0' and it didn't help one iota. The 2.6.13 kernel on ReiserFS >> (without using 'nolargeio=1' as a mount option) still takes about >> 4m35s to fseek 200,000 times on that 4MB file, even with 'hdparm -a0 >> /dev/hda' in effect. > > > Does it make a difference when done on the filesystem *partition* > rather than the base drive? At one time, this mattered, and it may > still work that way today. > > Eg. hdparm -a0 /dev/hda3 rather than hdparm -a0 /dev/hda > > ?? > >
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