Messages in this thread | | | Date | Fri, 1 Aug 2003 01:07:41 +0530 | From | Apurva Mehta <> | Subject | Re: 2.6.0-test2-mm2 |
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* Andrew Morton <akpm@osdl.org> [31-07-2003 14:52]: > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.0-test2/2.6.0-test2-mm2/ > > . CPU scheduler changes > > . Several changes to the synaptics and PS/2 drivers. People who have had > problems with keyboards and mice, please test and report. > > . Lots of other things, mainly bugfixes.
I have noticed that while the system remains responsive when there is heavy CPU load alone, the unresponsiveness comes when there is heavy disk i/o. In light of this, I subjected my system to the following tests :
1) Untarred linux-2.6.0-test2.tar.bz2 (To create a stream of writes) 2) did a `find / -name "foobar" -print` as root (To create a stream of reads) 3) bzip2'ed a 30 MB file to 3.2 MB ( this ensures 100 % CPU usage).
All the above were working on the same disk.
As the above three things were going on, I was browsing, playing music on xmms, reading a pdf file in acrobat and generally switching between windows.
I did the above test on both 2.6.0-test2-mm1 + O11int + O11.1int ( no O11.2 int) and on 2.6.0-test2-mm2. I find that mm1 + O11 patches are better than mm2. The music never skipped on mm1, while it did on mm2. Also, overall resposiveness of the various windows was better on mm1.
However, when I did a `rpm --rebuilddb` on mm1 + O11int patches, I still got quite severe skipping toward the end of the 8 min process. I could not repeat the skipping again, even on the same kernel, because I guess there was not much rebuilding to do again..
If there are tools which I can use to produce helpful numbers, please let me know. I will post the required numbers ASAP.
Also, if you have any other tests which I could perform to create heavy disk I/O, please let me know about that too.
Regards,
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