Re: patches for test / review

[Poul-Henning Kamp]

In message <[EMAIL PROTECTED]>, Alfred Perlstein writes:

>Keeping the currect cluster code is a bad idea, if the drivers were
>taught how to traverse the linked list in the buf struct rather
>than just notice "a big buffer" we could avoid a lot of page
>twiddling and also allow for massive IO clustering ( > 64k ) 

Before we redesign the clustering, I would like to know if we
actually have any recent benchmarks which prove that clustering
is overall beneficial ?

I would think that track-caches and intelligent drives would gain
much if not more of what clustering was designed to do gain.

I seem to remember Bruce saying that clustering could even hurt ?

--
Poul-Henning Kamp             FreeBSD coreteam member
[EMAIL PROTECTED]               "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!


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