Re: ext3 performance inconsistencies, 2.4/2.6
From: Bill Rugolsky Jr.
Date: Tue Nov 04 2003 - 16:41:22 EST
On Tue, Nov 04, 2003 at 12:30:23PM -0800, Linus Torvalds wrote:
> But there really should be zero contention on the stdio data structures,
> so the locking would have to be _seriously_ broken to make that kind o
> fdifference (not necessarily buggy, but seriously badly implemented).
> A non-contended lock should be at most one locked instruction if well
> done, both on LinuxThreads and NPTL.
The results that I just posted are also for Red Hat 9, kernel 2.4.20-20.9.
rugolsky@ti31: getconf GNU_LIBPTHREAD_VERSION
Ulrich's release notes for nptl-0.57 says:
The changes are numerous and most of them were made by Jakub:
~ better stdio locking
I don't have my laptop running Fedora handy, but that's the next thing
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/