Messages in this thread | | | Subject | UP Regression (was) Re: Scaling noise | Date | Wed, 03 Sep 2003 08:51:56 -0700 | From | Cliff White <> |
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[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
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