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Code Issues Releases Activity

pthread: Limit automatic threads to mb_height.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-01-01 01:21:31 +01:00
parent 9c1f0493d5
commit e404eee1e1
1 changed files with 4 additions and 0 deletions
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4
libavcodec/pthread.c
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@ -189,6 +189,10 @@ static int get_logical_cpus(AVCodecContext *avctx)
nb_cpus = sysconf(_SC_NPROCESSORS_ONLN); nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
#endif #endif
av_log(avctx, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus); av_log(avctx, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
if (avctx->height)
nb_cpus = FFMIN(nb_cpus, (avctx->height+15)/16);
return FFMIN(nb_cpus, MAX_AUTO_THREADS); return FFMIN(nb_cpus, MAX_AUTO_THREADS);
} }