Messages in this thread | | | Date | Sun, 21 Jan 2001 13:09:53 -0500 | From | Chris Mason <> | Subject | Re: Kernel 2.4.x and 2.4.1-preX - Higher latency then 2.2.x kernels? |
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On Saturday, January 20, 2001 02:59:24 PM -0500 Gregory Maxwell <greg@linuxpower.cx> wrote:
> On Sat, Jan 20, 2001 at 02:50:16PM -0500, Shawn Starr wrote: >> It just seems that since using 2.4 ive noticed my poor Pentium 200Mhz >> slow down whether being in X or otherwise. It just seems that the system >> is sluggish. >> >> I am using the new ReiserFS filesystem and I do know its still in heavy >> development perhaps my latency is due to this (?) > > Reiserfs uses much more complex data structures then ext2 (trees..). I > don't think that latency has ever been a design criteria and all of the > benchmarks they use are pretty much pure throughput tests. > > So it wouldn't be really surprising if reiserfs had very bad latency. You > should apply the timepegs patch and profile your kernel latency to see > where it's coming from.
I'm actually very interested in fixing any latency problems. If you do these tests, please send the results along.
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