On Tue, Jun 30, 2009 at 11:56 AM, Sven-Thorsten Dietrich<sven@xxxxxxxxxxxxxxxxxxxxx> wrote: > When generating a histogram on multiple cores, the priority of > cyclictest threads should be the same on each CPU. Of course, But original cyclictest is different test scenario using many threads. > This change would make the priority lower on higher CPU ids, resulting > in apparent performance skew in favor of CPU0. Um. I don't agree with your opinions because we can try cyclictest commands like belows using "-h" option. In other words, If cyclictest user want to same priority about many threads , They can assign same priority with belows method or additional bash scripts. For example, case ) before remove your some patches #> cyclictest -t 3 -p 90 -h -D 100 &[enter] case ) after remove your some patches #> cyclictest -t 1 -p 90 -h -D 100 &[enter] #> cyclictest -t 1 -p 90 -h -D 100 &[enter] #> cyclictest -t 1 -p 90 -h -D 100 &[enter] or #> define i=3; while ($i) do cyclictest -t 1 -p 90 -h -D 100 & ; $i-- ; done I think that many users will confuse output results because of the differnece output style between "without -h" option and "with -h" option. If I mistake , Pleasse correct me. Thks. -- Regards, GeunSik Lim ( Samsung Electronics ) Blog : http://blog.naver.com/invain/ e-Mail: geunsik.lim@xxxxxxxxxxx leemgs@xxxxxxxxx , leemgs1@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
