On Tue, 2007-11-13 at 16:34 +0800, Zhang, Yanmin wrote:
> My new bisect captured 7c9e69faa28027913ee059c285a5ea8382e24b5d
> which caused the regression of iozone following run (3rd/4th... run after
> mounting
> the ext3 partition).
Linus just reverted that commit with commit:
commit 0b832a4b93
On Tue, 2007-11-13 at 10:19 +0800, Zhang, Yanmin wrote:
> On Mon, 2007-11-12 at 17:48 +0100, Peter Zijlstra wrote:
> > On Mon, 2007-11-12 at 17:05 +0200, Benny Halevy wrote:
> > > On Nov. 12, 2007, 15:26 +0200, Peter Zijlstra <[EMAIL PROTECTED]> wrote:
> > > > Single socket, dual core opteron, 2GB
On Mon, 2007-11-12 at 17:48 +0100, Peter Zijlstra wrote:
> On Mon, 2007-11-12 at 17:05 +0200, Benny Halevy wrote:
> > On Nov. 12, 2007, 15:26 +0200, Peter Zijlstra <[EMAIL PROTECTED]> wrote:
> > > Single socket, dual core opteron, 2GB memory
> > > Single SATA disk, ext3
> > >
> > > x86_64 kernel a
2007 1:45:57 AM
> > Subject: Re: iozone write 50% regression in kernel 2.6.24-rc1
> >
> > On Fri, 2007-11-09 at 04:36 -0800, Martin Knoblauch wrote:
> > > - Original Message
> > > > From: "Zhang, Yanmin"
> > > > To: [EMAIL PR
On Mon, 2007-11-12 at 12:25 -0500, Mark Lord wrote:
> Peter Zijlstra wrote:
> ..
> > While I see that the write speed as reported under .24 ~70MB/s is much
> > lower than the one reported under .23 ~200MB/s, I find it very hard to
> > believe my poor single SATA disk could actually do the 200MB/s f
Peter Zijlstra wrote:
..
While I see that the write speed as reported under .24 ~70MB/s is much
lower than the one reported under .23 ~200MB/s, I find it very hard to
believe my poor single SATA disk could actually do the 200MB/s for
longer than its cache 8/16 MB (not sure).
vmstat shows that ac
On Mon, 2007-11-12 at 17:05 +0200, Benny Halevy wrote:
> On Nov. 12, 2007, 15:26 +0200, Peter Zijlstra <[EMAIL PROTECTED]> wrote:
> > Single socket, dual core opteron, 2GB memory
> > Single SATA disk, ext3
> >
> > x86_64 kernel and userland
> >
> > (dirty_background_ratio, dirty_ratio) tunables
Single socket, dual core opteron, 2GB memory
Single SATA disk, ext3
x86_64 kernel and userland
(dirty_background_ratio, dirty_ratio) tunables
(5,10) - default
2.6.23.1-42.fc8 #1 SMP
524288 4 59580 60356
524288 4 59247 61101
524288 4
- Original Message
> From: "Zhang, Yanmin" <[EMAIL PROTECTED]>
> To: Martin Knoblauch <[EMAIL PROTECTED]>
> Cc: [EMAIL PROTECTED]; LKML
> Sent: Monday, November 12, 2007 1:45:57 AM
> Subject: Re: iozone write 50% regression in kernel 2.6.24-rc1
&
On Mon, 2007-11-12 at 10:45 +0100, Peter Zijlstra wrote:
> On Mon, 2007-11-12 at 10:14 +0800, Zhang, Yanmin wrote:
>
> > > Subject: mm: speed up writeback ramp-up on clean systems
> >
> > I tested kernel 2.6.23, 2,6,24-rc2, 2.6.24-rc2_peter(2.6.24-rc2+this patch).
> >
> > 1) Compare among first/s
On Mon, 2007-11-12 at 10:14 +0800, Zhang, Yanmin wrote:
> > Subject: mm: speed up writeback ramp-up on clean systems
>
> I tested kernel 2.6.23, 2,6,24-rc2, 2.6.24-rc2_peter(2.6.24-rc2+this patch).
>
> 1) Compare among first/second/following running
> 2.6.23: second run of iozone will get about
On Fri, 2007-11-09 at 10:54 +0100, Peter Zijlstra wrote:
> On Fri, 2007-11-09 at 17:47 +0800, Zhang, Yanmin wrote:
> > Comparing with 2.6.23, iozone sequential write/rewrite (512M) has 50%
> > regression
> > in kernel 2.6.24-rc1. 2.6.24-rc2 has the same regression.
> >
> > My machine has 8 proces
On Fri, 2007-11-09 at 04:36 -0800, Martin Knoblauch wrote:
> - Original Message
> > From: "Zhang, Yanmin" <[EMAIL PROTECTED]>
> > To: [EMAIL PROTECTED]
> > Cc: LKML
> > Sent: Friday, November 9, 2007 10:47:52 AM
> > Subject:
- Original Message
> From: "Zhang, Yanmin" <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Cc: LKML
> Sent: Friday, November 9, 2007 10:47:52 AM
> Subject: iozone write 50% regression in kernel 2.6.24-rc1
>
> Comparing with 2.6.23, iozone seq
On Fri, 2007-11-09 at 17:47 +0800, Zhang, Yanmin wrote:
> Comparing with 2.6.23, iozone sequential write/rewrite (512M) has 50%
> regression
> in kernel 2.6.24-rc1. 2.6.24-rc2 has the same regression.
>
> My machine has 8 processor cores and 8GB memory.
>
> By bisect, I located patch
> http://gi
Comparing with 2.6.23, iozone sequential write/rewrite (512M) has 50% regression
in kernel 2.6.24-rc1. 2.6.24-rc2 has the same regression.
My machine has 8 processor cores and 8GB memory.
By bisect, I located patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=04
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