Re: smp overhead, and rwlocks considered harmful
Andrew Morton (akpm@digeo.com)
Sun, 23 Mar 2003 13:51:02 -0800
Aaron Lehmann <aaronl@vitelus.com> wrote:
>
> On Sat, Mar 22, 2003 at 05:58:16PM -0800, Andrew Morton wrote:
> >
> > I've been looking at the CPU cost of the write() system call. Time how long
> > it takes to write a million bytes to an ext2 file, via a million
> > one-byte-writes:
>
> Are you using a sysenter-capable C library?
No. That would certainly help the numbers.
But it is unrelated to the lock overhead problem.
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