On Mon, 5 Jun 2017, Michael Niedermayer wrote:

On Sun, Jun 04, 2017 at 03:35:07PM +0200, Marton Balint wrote:
Another huge performance improvement when using SMB/CIFS as output.

Signed-off-by: Marton Balint <c...@passwd.hu>
---
 libavformat/aviobuf.c     | 2 +-
 tests/ref/seek/lavf-alaw  | 3 +--
 tests/ref/seek/lavf-mulaw | 3 +--
 3 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 7d1b385253..36eb093a3a 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -33,7 +33,7 @@
 #include "url.h"
 #include <stdarg.h>

-#define IO_BUFFER_SIZE 32768
+#define IO_BUFFER_SIZE 131072


this is changed for all protocols not just the ones tested.
also i remember some patch that changes te buffer size for some
protocols, not sure what happened to that.
and theres the short_seek stuff, it might make sense to adjust that
too

A less intrusive approach is to set the buffer size for the file protocol only and only if a file is opened for writing. In that case, the fate test resuls will remain the same as well.

Regards,
Marton
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