On Oct 1, 2008, at 5:17 PM, John Baldwin wrote:
It sounds like you missed some of the dirhash changes somehow, as
dirhash no
longer has any lockmgr stuff in it (and only ever did in HEAD). I've
generated a patch though using svn. You can grab it from
http://www.FreeBSD.org/~jhb/patches/ufs_lo
On Thursday 25 September 2008 07:00:04 pm Jeff Wheelhouse wrote:
>
> On Sep 24, 2008, at 12:12 PM, John Baldwin wrote:
> > Shared lookups only work on the NFS client in 6.x. I'm about to
> > turn them on
> > for UFS in HEAD (8.x) and will backport the needed fixes to 7.x
> > after 7.1
> > (to
On Friday 26 September 2008 05:20:14 am Dag-Erling Smørgrav wrote:
> Jeff Wheelhouse <[EMAIL PROTECTED]> writes:
> > http://software.wheelhouse.org/rptest.tar.bz2
>
> Thanks. I get similar results on head; vfs.lookup_shared actually seems
> to *reduce* performance by about 10% - 20%. I ran the t
Jeff Wheelhouse <[EMAIL PROTECTED]> writes:
> http://software.wheelhouse.org/rptest.tar.bz2
Thanks. I get similar results on head; vfs.lookup_shared actually seems
to *reduce* performance by about 10% - 20%. I ran the test on both UFS
and ZFS; there is no significant difference.
DES
--
Dag-Erl
On Sep 24, 2008, at 12:12 PM, John Baldwin wrote:
Shared lookups only work on the NFS client in 6.x. I'm about to
turn them on
for UFS in HEAD (8.x) and will backport the needed fixes to 7.x
after 7.1
(too risky to merge to 7.x this close to a release).
OK, given all the patches you refer
On Sep 25, 2008, at 10:51 AM, Dag-Erling Smørgrav wrote:
Jeff Wheelhouse <[EMAIL PROTECTED]> writes:
I've written a quick benchmark with a pair of tests to
simplify/measure the problem. [...]
Care to share?
No problem:
http://software.wheelhouse.org/rptest.tar.bz2
Thanks,
Jeff
_
Jeff Wheelhouse <[EMAIL PROTECTED]> writes:
> I've written a quick benchmark with a pair of tests to
> simplify/measure the problem. [...]
Care to share?
DES
--
Dag-Erling Smørgrav - [EMAIL PROTECTED]
___
freebsd-hackers@freebsd.org mailing list
http:
Jeff Wheelhouse wrote:
On Sep 24, 2008, at 6:12 AM, Ivan Voras wrote:
There is nothing that can be done within the 6.x branch. 7.x contains
many improvements but I think only 8.x will directly change the lockmgr
and the namei cache. The best things you can try right now is to use
7-STABLE (or s
On Sep 24, 2008, at 2:10 PM, John Baldwin wrote:
You can still use cvs to pull the revisions. All those e-mail msg's
have the
CVS revisions in them, too.
If I'm ever to do anything that will benefit someone besides myself,
it's worth my making the effort to learn SVN. We have coasted on
On Wednesday 24 September 2008 01:47:32 pm Jeff Wheelhouse wrote:
>
> On Sep 24, 2008, at 12:12 PM, John Baldwin wrote:
> > Shared lookups only work on the NFS client in 6.x. I'm about to
> > turn them on
> > for UFS in HEAD (8.x) and will backport the needed fixes to 7.x
> > after 7.1
> > (t
On Sep 24, 2008, at 12:12 PM, John Baldwin wrote:
Shared lookups only work on the NFS client in 6.x. I'm about to
turn them on
for UFS in HEAD (8.x) and will backport the needed fixes to 7.x
after 7.1
(too risky to merge to 7.x this close to a release).
Testers available, when you get to
On Wednesday 24 September 2008 12:52:59 am Jeff Wheelhouse wrote:
>
> We have encountered some serious SMP performance/scalability problems
> that we've tracked back to lstat/namei calls. I've written a quick
> benchmark with a pair of tests to simplify/measure the problem. Both
> tests us
On Sep 24, 2008, at 6:12 AM, Ivan Voras wrote:
There is nothing that can be done within the 6.x branch. 7.x contains
many improvements but I think only 8.x will directly change the
lockmgr
and the namei cache. The best things you can try right now is to use
7-STABLE (or soon to be released 7.
On Wed, Sep 24, 2008 at 09:26:55AM +0200, Daniel Gerzo wrote:
> Hello Jeff,
>
> On Wed, 24 Sep 2008 00:52:59 -0400, Jeff Wheelhouse
> <[EMAIL PROTECTED]> wrote:
> >
> > We have encountered some serious SMP performance/scalability problems
> > that we've tracked back to lstat/namei calls. I've
Hello Jeff,
On Wed, 24 Sep 2008 00:52:59 -0400, Jeff Wheelhouse
<[EMAIL PROTECTED]> wrote:
>
> We have encountered some serious SMP performance/scalability problems
> that we've tracked back to lstat/namei calls. I've written a quick
this all seems like a reason of very poor performance of
Ivan Voras wrote:
> There is nothing that can be done within the 6.x branch. 7.x contains
> many improvements but I think only 8.x will directly change the lockmgr
> and the namei cache. The best things you can try right now is to use
> 7-STABLE (or soon to be released 7.1; you might need tuning w
Jeff Wheelhouse wrote:
> This is on 6.3-RELEASE-p4 with vfs.lookup_shared=1.
>
> I believe this is the same issue that was previously discussed as "2 x
> quad-core system is slower that 2 x dual core on FreeBSD" archived here:
>
> http://lists.freebsd.org/pipermail/freebsd-stable/2007-November/0
We have encountered some serious SMP performance/scalability problems
that we've tracked back to lstat/namei calls. I've written a quick
benchmark with a pair of tests to simplify/measure the problem. Both
tests use a tree of directories: the top level directory contains five
subdirecto
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