On 03/19/2012 10:10 AM, Sean McGovern wrote:

> On 3/19/12, Ronald S. Bultje <[email protected]> wrote:
>> Hi,
>>
>> On Sun, Mar 18, 2012 at 10:08 PM, Sean McGovern <[email protected]> wrote:
>>> ---
>>>  libavcodec/pthread.c |    4 ++++
>>>  1 files changed, 4 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
>>> index 2e4c6a8..4000d6b 100644
>>> --- a/libavcodec/pthread.c
>>> +++ b/libavcodec/pthread.c
>>> @@ -1011,6 +1011,10 @@ static void
>>> validate_thread_parameters(AVCodecContext *avctx)
>>>         avctx->thread_count       = 1;
>>>         avctx->active_thread_type = 0;
>>>     }
>>> +
>>> +    if(avctx->thread_count > MAX_AUTO_THREADS) {
>>> +        av_log(avctx, AV_LOG_WARNING, "Application has requested %d
>>> threads. Using a thread count greater than %d is not recommended.\n",
>>> avctx->thread_count, MAX_AUTO_THREADS);
>>> +    }
>>
>> Why?
> 
> I wrote this after:
> a) running FATE with 24 threads (on a 64-way ppc64 box, no less!) and
> observing some failures
> b) a brief comment from Justin on IRC about -threads auto being 16
> "for a reason"


maybe someone said that, but certainly not me?

-Justin


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