Messages in this thread | | | Date | Thu, 30 Jun 2016 08:53:58 +0100 | From | Morten Rasmussen <> | Subject | Re: [PATCH v2 00/13] sched: Clean-ups and asymmetric cpu capacity support |
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On Tue, Jun 28, 2016 at 06:20:27PM +0800, Koan-Sin Tan wrote: > Hi, > > I tested these patches with patches from your preview branch [1] and some > platform specific patches on MediaTek MT8173 EVB (integrated branch at [2]) > > > Test 0: > > for i in `seq 1 10`; \ > > do sysbench --test=cpu --max-time=3 --num-threads=1 run; \ > > done \ > > | awk '{if ($4=="events:") {print $5; sum +=$5; runs +=1}} \ > > END {print "Average events: " sum/runs}' > > Target: ARM TC2 (2xA15+3xA7) > > > > (Higher is better) > > tip: Average events: 146.9 > > patch: Average events: 217.9 > > Target: MediaTek MT8173 EVB (2xA53+2xA72) > > w/o capacity patches: > 274.7 (actually, it varies a lot between 194 and 329
The variation you mention is consistent with our observations on both TC2 and Juno. Most times you get either big or little performance, and occasionally a number in between.
> w/ capacity patches: > 328.7 > > > Test 1: > > perf stat --null --repeat 10 -- \ > > perf bench sched messaging -g 50 -l 5000 > > > > Target: Intel IVB-EP (2*10*2) > > > > tip: 4.861970420 seconds time elapsed ( +- 1.39% ) > > patch: 4.886204224 seconds time elapsed ( +- 0.75% ) > > > > Target: ARM TC2 A7-only (3xA7) (-l 1000) > > > > tip: 61.485682596 seconds time elapsed ( +- 0.07% ) > > patch: 62.667950130 seconds time elapsed ( +- 0.36% ) > > > > Target: MediaTek MT8173 EVB A53-only (2xA7) (-l 1000) > > w/o capacity patches: > 72.663181227 seconds time elapsed ( +- 1.62% ) > 71.502263666 seconds time elapsed ( +- 0.45% ) > 73.707466212 seconds time elapsed ( +- 0.99% ) > 73.623523997 seconds time elapsed ( +- 1.85% ) > 74.150137066 seconds time elapsed ( +- 1.41% ) > > w/ capacity patches: > 70.360055056 seconds time elapsed ( +- 1.58% ) > 69.884793481 seconds time elapsed ( +- 0.78% ) > 73.395917166 seconds time elapsed ( +- 1.86% ) > 70.082440427 seconds time elapsed ( +- 1.66% ) > 69.365401758 seconds time elapsed ( +- 0.80% ) > > Tested-by: Koan-Sin Tan <freedom.tan@mediatek.com>
Thanks for testing.
Morten
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