UP Regression (was) Re: Scaling noise
From: Cliff White
Date: Wed Sep 03 2003 - 11:06:22 EST
[snip]
.
>
> I don't think anyone advocates sacrificing UP performance for 32 ways, but
> as he says it can happen .1% at a time.
>
> But it looks like 2.6 will scale well to 16 way and higher. I wonder if
> there are many regressions from 2.4 or 2.2 on small systems.
>
>
On the Scalable Test Platform, running osdl-aim-7, for the
UP case, 2.4 is a bit better than 2.6, this is consistent across
many runs. For SMP, 2.6 is better, but the delta is rather
small, until we get to 8 CPUS. We have a lot of un-parsed data from other
tests - might be some trends there also.
See http://developer.osdl.org/cliffw/reaim/index.html
2.4 kernels are at the bottom of the page.
Run # PLM # Kernel workload Max JPM max host
1-way lusers
278671 2083 patch-2.4.23-pre2 new_dbase 1066.75 18
stp1-003
278835 2087 2.6.0-test4-mm5 new_dbase 995.74 17
stp1-003
2-way
278690 2083 patch-2.4.23-pre2 new_dbase 1300.01 22
stp2-000
278854 2087 2.6.0-test4-mm5 new_dbase 1340.96 22
stp2-000
4-way
278437 2075 patch-2.4.23-pre1 new_dbase 5268.41 80
stp4-000
278805 2084 2.6.0-test4-mm4 new_dbase 5355.73 88
stp4-000
8-way
278651 2083 patch-2.4.23-pre2 new_dbase 6790.01 112
stp8-002
278722 2084 2.6.0-test4-mm4 new_dbase 8189.51 136
stp8-001
cliffw
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