[FFmpeg-devel] [PATCH] change flag of cuCtxCreate to avoid CPU spins

[Timo Rothenpieler]

> ---
>   libavcodec/nvenc.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
> index 7c683ea..a20356f 100644
> --- a/libavcodec/nvenc.c
> +++ b/libavcodec/nvenc.c
> @@ -580,7 +580,7 @@ static av_cold int nvenc_encode_init(AVCodecContext
> *avctx)
>       }
>
>       ctx->cu_context = NULL;
> -    cu_res = dl_fn->cu_ctx_create(&ctx->cu_context, 0,
> dl_fn->nvenc_devices[ctx->gpu]);
> +    cu_res = dl_fn->cu_ctx_create(&ctx->cu_context, 4,
> dl_fn->nvenc_devices[ctx->gpu]); // CU_CTX_SCHED_BLOCKING_SYNC=4, avoid
> CPU spins
>
>       if (cu_res != CUDA_SUCCESS) {
>           av_log(avctx, AV_LOG_FATAL, "Failed creating CUDA context for
> NVENC: 0x%x\n", (int)cu_res);

applied, Thanks.


Timo

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