Re: Feedback for fastselect and one-copy-pipe

Manfred Spraul (manfred@colorfullife.com)
Mon, 12 Mar 2001 21:28:38 +0100

From: <kuznet@ms2.inr.ac.ru>
>
> > freebsd
>
> Very funny, the idea is borrowed from there.
>
> As you could understand your patch kills it. PAGE_SIZE is one of the
most
> frequently used transfer unit.
>

freebsd-4.0 doesn't use direct transfers for PAGE_SIZE'd pipe write()s:
it uses MINDIRECT=8192. (and PIPE_BUF is 512, so 4096 was possible for
them)

--
    Manfred


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