aio_read template.

David Collier-Brown David.Collier-Brown at Sun.COM
Wed Jun 8 16:36:06 GMT 2005

Excellent point!  I'm about to put that logic into a (non-Samba)
program that uses a large copy-buffer, and could use a reduction
in latency.


Volker Lendecke wrote:
> On Wed, Jun 08, 2005 at 10:33:05AM -0400, David Collier-Brown wrote:
>>	A 256K per-file buffer might be reasonable, but a 512
>>	of 1024K buffer per file sounds excessive at first glance (:-))
>>	If I were building a dedicated server for storing streaming
>>	data, or if my stripe width was 1024K, that might well change.
> Even if you could afford a meg of cache per file this would not help you very
> much, because then the latency of the first read call filling the cache gets
> way too large. You would have to satisfy the first read call directly and
> trigger an async cache filling read call.
> Volker

David Collier-Brown,      | Always do right. This will gratify
Sun Microsystems, Toronto | some people and astonish the rest
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