[vlc-devel] [PATCH] smb2: limit the read size
remi at remlab.net
Fri Feb 7 16:48:15 CET 2020
Fast seeking depends on round-trip time (a.k.a. "ping"), not bandwidth, so the answer is that "it depends".
Le 7 février 2020 12:11:11 GMT+02:00, Thomas Guillem <thomas at gllm.fr> a écrit :
>On Thu, Feb 6, 2020, at 17:57, Rémi Denis-Courmont wrote:
>> Le torstaina 6. helmikuuta 2020, 17.29.54 EET Thomas Guillem a écrit
>> > This fixes slow probing/seeking when using prefetch since it
>> > data size (16MB) for each read().
>> The impact of read size on effective stream bandwidth is roughly
>> Existing Trac report show that 32 KiB is far too little in real life:
>I missed that comment, thanks for you input.
>So the faster you are, the less responsive (to seek) you are.
>I think I will go between 128k and 1024k. I will do some test at home
>with my poor wifi setup.
>What about your comment "Marking CIFS as fast-seekable".
>CIFS is 99% local network (except those using it via ssh/port
>So it should be fast, but lot of people have a bad wifi setup (like
>me), it's not uncommon to only have 800kb/s (bad router + lot of wifi
>neighbors in a city).
>Is 800kb/s fast enough to enable fast-seekable ?
>Crazy idea: live switch between the 2 cache modules depending on the
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