ffmpeg & ULE

[Urmas Lett]

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

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