On 17.03.2015, stan wrote: > Lucky you! Lucky? The machine was fully unusable. > Are you using F21? Which kernel? Yes, this machine is on F21. [htd@chiara ~]$ uname -a Linux chiara.fritha.org 3.19.2-rc1-bfq #1 SMP PREEMPT Mon Mar 16 16:16:07 CET 2015 x86_64 x86_64 x86_64 GNU/Linux It's a custom build kernel with two minor patches and the BFQ scheduler. > So, are you using rpmbuild with the src.rpm package, or compiling > directly from the source tree? Directly from source. > What happens if you use -j 4? I would think you should get somewhere > between 3 and 4 cores. This is the top output when compiling a kernel with -j8 (4 cores/8 threads): top - 18:47:16 up 9:07, 4 users, load average: 1.77, 0.39, 0.13 Tasks: 263 total, 10 running, 253 sleeping, 0 stopped, 0 zombie %Cpu0 : 92.3 us, 5.7 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.7 hi, 0.3 si, 0.0 st %Cpu1 : 92.7 us, 5.6 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.3 hi, 0.3 si, 0.0 st %Cpu2 : 92.3 us, 6.4 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.3 hi, 0.0 si, 0.0 st %Cpu3 : 93.3 us, 5.4 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.0 hi, 0.3 si, 0.0 st %Cpu4 : 92.3 us, 6.4 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.0 hi, 0.3 si, 0.0 st %Cpu5 : 93.0 us, 5.7 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.3 hi, 0.0 si, 0.0 st %Cpu6 : 92.7 us, 5.6 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.3 hi, 0.3 si, 0.0 st %Cpu7 : 92.3 us, 6.0 sy, 0.0 ni, 0.0 id, 0.0 wa, 1.3 hi, 0.3 si, 0.0 st KiB Mem : 16342864 total, 12336128 free, 818288 used, 3188448 buff/cache KiB Swap: 16777212 total, 16777212 free, 0 used. 15174260 avail Mem 19343 root 6 0 207228 81548 16184 R 24.3 0.5 0:00.73 cc1 19359 root 6 0 196268 71812 16320 R 21.6 0.4 0:00.65 cc1 19391 root 7 0 180292 55032 16188 R 13.0 0.3 0:00.39 cc1 19423 root 7 0 171012 40864 10800 R 6.3 0.3 0:00.19 cc1 19431 root 7 0 166552 37340 10888 R 5.6 0.2 0:00.17 cc1 19447 root 6 0 155452 25596 10788 R 2.3 0.2 0:00.07 cc1 19455 root 7 0 153500 24540 10648 R 2.3 0.2 0:00.07 cc1 19463 root 7 0 150112 19440 10500 R 1.3 0.1 0:00.04 cc1 > When I tried -j, I saw all the jobs queue, but only one core was used. Can you reproduce this behaviour with a bog standard 3.19.x? -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
