Date: Tue, 18 Oct 2011 18:50:54 +0200 From: "Hartmann, O." <ohartman@zedat.fu-berlin.de> To: Urmas Lett <urmas.lett@eenet.ee> Cc: freebsd-performance@freebsd.org, Steven Hartland <killing@multiplay.co.uk> Subject: Re: ffmpeg & ULE Message-ID: <4E9DAE6E.5080809@zedat.fu-berlin.de> In-Reply-To: <4E9D7C63.1090507@eenet.ee> References: <4E9D4124.9000307@eenet.ee> <20111018143012.66cdbbf8@nonamehost.> <4E9D6D2C.9060306@eenet.ee> <4161C63AB02B4332864C985BBAEAD8F2@multiplay.co.uk> <4E9D7C63.1090507@eenet.ee>
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On 10/18/11 15:17, Urmas Lett wrote:
> 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
That is right. This CPU is purely 4-core with no Intel HTT/SMT. Do not
blame the CPU for poor performance. There was another thread regarding
poor performance with ULE, I need to look for it. It seems, ULE does
have some serious problems and there is no developer available.
oh
>
> 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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