On 10/18/2011 3:36 PM, Steven Hartland wrote:
What happens if you either:
1. disable HT in the bios
Intel says i5-2400 has no HT:
Processor Number i5-2400
# of Cores 4
# of Threads 4
and BIOS has no HT disable knob
2. limit the threads to 4?
ffmpeg -threads 4 (sched_ule):
real 3m19.379s (with -threads 0 was 2m52.711s)
user 6m50.107s (with -threads 0 was 6m50.310s)
sys 0m1.507s
top -H:
CPU: 0.0% user, 55.8% nice, 0.4% system, 0.0% interrupt, 43.8% idle
Mem: 136M Active, 884M Inact, 498M Wired, 84K Cache, 409M Buf, 2339M Free
Swap: 4096M Total, 4096M Free
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
1178 root 52 20 255M 140M uwait 1 1:05 51.17%
ffmpeg{ffmpeg}
1178 root 103 20 255M 140M CPU0 1 0:59 37.60%
ffmpeg{ffmpeg}
1178 root 52 20 255M 140M uwait 3 0:59 37.16%
ffmpeg{ffmpeg}
1178 root 52 20 255M 140M uwait 3 0:59 34.38%
ffmpeg{ffmpeg}
1178 root 52 20 255M 140M uwait 2 0:54 33.59%
ffmpeg{ffmpeg}
1178 root 102 20 255M 140M CPU2 0 0:46 32.37%
ffmpeg{ffmpeg}
1171 root 20 0 67992K 5516K select 2 0:00 0.00% sshd
regards,
Urmas Lett
Tel: +(372) 7 302 110
Fax: +(372) 7 302 111
E-Mail: [email protected]
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