Re: [HEADSUP] Please help test device vnode bypass!

From: Divacky Roman <xdivac02_at_stud.fit.vutbr.cz>
Date: Mon, 8 Nov 2004 18:30:07 +0100
> >  On a 700MHz K7 machine this doubles the speed of
> >          dd if=/dev/zero of=/dev/null bs=1 count=1000000
> >  
> >  This roughly translates to shaving 2usec of each read/write syscall.

I tried it (no problem yet) and did a bit testing...
(cp -R /sys/ /tmp/s, dd if=/dev/zero of=smth count=1000000, cp smth smth1 and
so on)

and it seems like its actually a bit slower (but everything works properly) -
did I get anything wrong? should the results be a bit better (I did three runs
every time of each test)

roman
Received on Mon Nov 08 2004 - 16:30:12 UTC

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