Messages in this thread | | | Date | Sun, 23 Mar 2003 13:51:02 -0800 | From | Andrew Morton <> | Subject | Re: smp overhead, and rwlocks considered harmful |
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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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