Messages in this thread | | | From | Ozgur <> | Subject | Re: niced tasks on SMT system | Date | Fri, 29 Dec 2017 00:07:50 +0300 |
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28.12.2017, 23:59, "Pavel Machek" <pavel@ucw.cz>: > Hi! > >> >> > Ok, so I'm compiling, and I'd like to run a flight simulator. >> >> > >> >> > Flightgear normally does 20fps on my system... kinda low but playable. >> >> > >> >> > I have reniced make -j 5 fo kernel running. Scheduler gives 100% of >> >> > one of CPUs to Flightgear (good), but the smt sibling is used by the >> >> > compilation, and I'm down to 9 fps. Not good. >> >> > >> >> > Even with single-threaded make, I have 10-13fps. >> >> > >> >> > Is there way to learn which CPUs are SMT siblings? >> >> >> >> cat /sys/devices/system/cpu/cpu{N}/topology/thread_siblings >> > >> > Thanks for a hint. >> > >> > Well, something is definitely wrong there: >> > >> > pavel@duo:/data/l/linux-n900$ cat >> > /sys/devices/system/cpu/cpu0/topology/thread_siblings >> > 03 >> >> Ops, >> >> do you fly on N900 via flightgear? :) >> I have two N900 and one run gentoo. > > No, no flightgear on N900. It was preparing kernels for my N900 that > interfered with flying.
I would like to be involved in the team and share the job. firstly I will read the project documents.
> BTW there's lot of fun to be had with > N900. https://wiki.postmarketos.org/wiki/Nokia_N900_(nokia-rx51) I > even have voice calls working on Debian, help welcome :-).
I use default Maemo, the n900 is already debian, gentoo run a chroot :)
> Pavel
Ozgur
> -- > (english) http://www.livejournal.com/~pavelmachek > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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