Messages in this thread |  | | Date | Tue, 27 Aug 2002 14:32:53 -0400 (EDT) | From | Bill Davidsen <> | Subject | Re: VM changes added to performance patches for 2.4.19 |
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On Sat, 24 Aug 2002 conman@kolivas.net wrote:
> > With the patch against 2.4.19: > > Scheduler O(1), Preemptible, Low Latency > > I have now added two extra alternative patches that include > either Rik's rmap (thanks Rik) or AA's vm changes (thanks to Nuno Monteiro for > merging this) > > For the record, with the (very) brief usage of these two patches I found the > rmap patch a little faster. This is very subjective and completely untested. > > Check them out here and tell me what you think(please read the FAQ): > http://kernel.kolivas.net
I tried the 2.4.19-ck3-aa patch last night, and did a few informal tests against my current production kernel, 2.4.19-ac4. Machine in Athlon 1400MHz, 1GB RAM, 20+30GB WD disks.
Kernel compile was about 7 sec faster with ck3-aa, 6:58 vs 7:05 (no -j values).
Then I did my nightly backup of a scanned documentation project, making a CD image from the scans, currently ~570MB. I was on ck3-aa, and I said "self, that seemed pretty fast!" So I rebooted cold and tried the mkisofs with both kernels, twice each.
2.4.19-ac4 2.4.19-ck3-aa mkisofs 570MB 2:05 1:14
It was repeatably 40% faster! More testing, and now I'll build a stock 2.4.19 kernel for additional testing, and pull that responsiveness benchmark and try that, too.
Looks like a nice job overall, I'm putting it on a laptop tonight, which may give a better idea of how fast, or not, it really is.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
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