On Wed, 22 Aug 2012 13:47:07 -0700 Dan Williams wrote:
> On Tue, Aug 21, 2012 at 11:00 PM, NeilBrown wrote:
> > On Wed, 22 Aug 2012 11:57:02 +0800 Yuanhan Liu
> > wrote:
> >
> >>
> >> -#define NR_STRIPES 256
> >> +#define NR_STRIPES 1024
> >
> > Changing one magic number int
On Tue, Aug 21, 2012 at 11:00 PM, NeilBrown wrote:
> On Wed, 22 Aug 2012 11:57:02 +0800 Yuanhan Liu
> wrote:
>
>>
>> -#define NR_STRIPES 256
>> +#define NR_STRIPES 1024
>
> Changing one magic number into another magic number might help your case, but
> it not really a general
On 2012-08-22, at 12:00 AM, NeilBrown wrote:
> On Wed, 22 Aug 2012 11:57:02 +0800 Yuanhan Liu
> wrote:
>>
>> -#define NR_STRIPES 256
>> +#define NR_STRIPES 1024
>
> Changing one magic number into another magic number might help your case, but
> it not really a general solution.
On Wed, Aug 22, 2012 at 04:00:25PM +1000, NeilBrown wrote:
> On Wed, 22 Aug 2012 11:57:02 +0800 Yuanhan Liu
> wrote:
>
> >
> > -#define NR_STRIPES 256
> > +#define NR_STRIPES 1024
>
> Changing one magic number into another magic number might help your case, but
> it not really
On Wed, 22 Aug 2012 11:57:02 +0800 Yuanhan Liu
wrote:
>
> -#define NR_STRIPES 256
> +#define NR_STRIPES 1024
Changing one magic number into another magic number might help your case, but
it not really a general solution.
Possibly making sure that max_nr_stripes is at least
On 8/22/12 11:57 AM, Yuanhan Liu wrote:
On Fri, Aug 17, 2012 at 10:25:26PM +0800, Fengguang Wu wrote:
> [CC md list]
>
> On Fri, Aug 17, 2012 at 09:40:39AM -0400, Theodore Ts'o wrote:
>> On Fri, Aug 17, 2012 at 02:09:15PM +0800, Fengguang Wu wrote:
>>> Ted,
>>>
>>> I find ext4 write performance
On Tue, Aug 21, 2012 at 05:42:21PM +0800, Fengguang Wu wrote:
> On Sat, Aug 18, 2012 at 06:44:57AM +1000, NeilBrown wrote:
> > On Fri, 17 Aug 2012 22:25:26 +0800 Fengguang Wu
> > wrote:
> >
> > > [CC md list]
> > >
> > > On Fri, Aug 17, 2012 at 09:40:39AM -0400, Theodore Ts'o wrote:
> > > > On F
On Sat, Aug 18, 2012 at 06:44:57AM +1000, NeilBrown wrote:
> On Fri, 17 Aug 2012 22:25:26 +0800 Fengguang Wu
> wrote:
>
> > [CC md list]
> >
> > On Fri, Aug 17, 2012 at 09:40:39AM -0400, Theodore Ts'o wrote:
> > > On Fri, Aug 17, 2012 at 02:09:15PM +0800, Fengguang Wu wrote:
> > > > Ted,
> > > >
On Fri, 17 Aug 2012 22:25:26 +0800 Fengguang Wu
wrote:
> [CC md list]
>
> On Fri, Aug 17, 2012 at 09:40:39AM -0400, Theodore Ts'o wrote:
> > On Fri, Aug 17, 2012 at 02:09:15PM +0800, Fengguang Wu wrote:
> > > Ted,
> > >
> > > I find ext4 write performance dropped by 3.3% on average in the
> > >
On Fri, Aug 17, 2012 at 11:13:18PM +0800, Fengguang Wu wrote:
>
> Obviously the major regressions happen to the 100dd over raid cases.
> Some 10dd cases are also impacted.
>
> The attached graphs show that everything becomes more fluctuated in
> 3.6.0-rc1 for the lkp-nex04/RAID0-12HDD-thresh=8G/e
[CC md list]
On Fri, Aug 17, 2012 at 09:40:39AM -0400, Theodore Ts'o wrote:
> On Fri, Aug 17, 2012 at 02:09:15PM +0800, Fengguang Wu wrote:
> > Ted,
> >
> > I find ext4 write performance dropped by 3.3% on average in the
> > 3.6-rc1 merge window. xfs and btrfs are fine.
> >
> > Two machines are
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