[vlc-devel] [PATCH 2/4] prefetch: Don't activate for preparse

[Thomas Guillem]

It is faster when using taglib that could search for the ID3tag at different offsets, the STREAM_CACHE_TRACK 3 helps a lot.

On Wed, Oct 9, 2019, at 11:39, Thomas Guillem wrote:
> 
> On Wed, Oct 9, 2019, at 11:36, Rémi Denis-Courmont wrote:
>> Then this change is plain dumb. Cache is terrible on slow networks.
> 
> I tested it and concluded it was faster than no cache. Could you elaborate ? I don't understand.
> 
>> 
>> Le 9 octobre 2019 10:21:24 GMT+03:00, Thomas Guillem <thomas at gllm.fr> a écrit :
>>> 
>>> 
>>> On Tue, Oct 8, 2019, at 19:41, Rémi Denis-Courmont wrote:
>>>> I disagree.
>>>> 
>>>> This will cause very very small reads, and potentially seeks backward - all 
>>>> ending in ridiculously bad performance.
>>> 
>>> How so ? If prefetch is disabled, then the "cache" stream filter will be used.
>>> 
>>> cf. in src/input/access.c: 
>>> s = stream_FilterChainNew(s, "prefetch,cache");
>>> 
>>> 
>>> > 
>>>> -- 
>>>> Реми Дёни-Курмон
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>> 
>> -- 
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