2012/12/5, Wanpeng Li :
> Hi Namjae,
>
> How about set bdi->dirty_background_bytes according to bdi_thresh? I found
> an issue during background flush process when review codes, if over
> background
> flush threshold, wb_check_background_flush will kick a work to current
> per-bdi
> flusher, but ma
2012/10/22, Dave Chinner :
> On Fri, Oct 19, 2012 at 04:51:05PM +0900, Namjae Jeon wrote:
>> Hi Dave.
>>
>> Test Procedure:
>>
>> 1) Local USB disk WRITE speed on NFS server is ~25 MB/s
>>
>> 2) Run WRITE test(create 1 GB file) on NFS Client with default
>> writeback settings on NFS Server. By defa
On Fri, Oct 19, 2012 at 04:51:05PM +0900, Namjae Jeon wrote:
> Hi Dave.
>
> Test Procedure:
>
> 1) Local USB disk WRITE speed on NFS server is ~25 MB/s
>
> 2) Run WRITE test(create 1 GB file) on NFS Client with default
> writeback settings on NFS Server. By default
> bdi->dirty_background_bytes
Hi Dave.
Test Procedure:
1) Local USB disk WRITE speed on NFS server is ~25 MB/s
2) Run WRITE test(create 1 GB file) on NFS Client with default
writeback settings on NFS Server. By default
bdi->dirty_background_bytes = 0, that means no change in default
writeback behaviour
3) Next we change bdi
2012/9/27, Jan Kara :
> On Thu 27-09-12 15:00:18, Namjae Jeon wrote:
>> 2012/9/27, Jan Kara :
>> > On Thu 27-09-12 00:56:02, Wu Fengguang wrote:
>> >> On Tue, Sep 25, 2012 at 12:23:06AM +0200, Jan Kara wrote:
>> >> > On Thu 20-09-12 16:44:22, Wu Fengguang wrote:
>> >> > > On Sun, Sep 16, 2012 at 08
On Thu 27-09-12 15:00:18, Namjae Jeon wrote:
> 2012/9/27, Jan Kara :
> > On Thu 27-09-12 00:56:02, Wu Fengguang wrote:
> >> On Tue, Sep 25, 2012 at 12:23:06AM +0200, Jan Kara wrote:
> >> > On Thu 20-09-12 16:44:22, Wu Fengguang wrote:
> >> > > On Sun, Sep 16, 2012 at 08:25:42AM -0400, Namjae Jeon w
2012/9/27, Jan Kara :
> On Thu 27-09-12 00:56:02, Wu Fengguang wrote:
>> On Tue, Sep 25, 2012 at 12:23:06AM +0200, Jan Kara wrote:
>> > On Thu 20-09-12 16:44:22, Wu Fengguang wrote:
>> > > On Sun, Sep 16, 2012 at 08:25:42AM -0400, Namjae Jeon wrote:
>> > > > From: Namjae Jeon
>> > > >
>> > > > Thi
On Thu 27-09-12 00:56:02, Wu Fengguang wrote:
> On Tue, Sep 25, 2012 at 12:23:06AM +0200, Jan Kara wrote:
> > On Thu 20-09-12 16:44:22, Wu Fengguang wrote:
> > > On Sun, Sep 16, 2012 at 08:25:42AM -0400, Namjae Jeon wrote:
> > > > From: Namjae Jeon
> > > >
> > > > This patch is based on suggestio
On Tue, Sep 25, 2012 at 12:23:06AM +0200, Jan Kara wrote:
> On Thu 20-09-12 16:44:22, Wu Fengguang wrote:
> > On Sun, Sep 16, 2012 at 08:25:42AM -0400, Namjae Jeon wrote:
> > > From: Namjae Jeon
> > >
> > > This patch is based on suggestion by Wu Fengguang:
> > > https://lkml.org/lkml/2011/8/19/1
2012/9/25, Namjae Jeon :
> 2012/9/25, Dave Chinner :
>> On Thu, Sep 20, 2012 at 04:44:22PM +0800, Fengguang Wu wrote:
>>> [ CC FS and MM lists ]
>>>
>>> Patch looks good to me, however we need to be careful because it's
>>> introducing a new interface. So it's desirable to get some acks from
>>> th
2012/9/25, Jan Kara :
> On Thu 20-09-12 16:44:22, Wu Fengguang wrote:
>> On Sun, Sep 16, 2012 at 08:25:42AM -0400, Namjae Jeon wrote:
>> > From: Namjae Jeon
>> >
>> > This patch is based on suggestion by Wu Fengguang:
>> > https://lkml.org/lkml/2011/8/19/19
>> >
>> > kernel has mechanism to do wri
2012/9/25, Dave Chinner :
> On Thu, Sep 20, 2012 at 04:44:22PM +0800, Fengguang Wu wrote:
>> [ CC FS and MM lists ]
>>
>> Patch looks good to me, however we need to be careful because it's
>> introducing a new interface. So it's desirable to get some acks from
>> the FS/MM developers.
>>
>> Thanks,
On Thu, Sep 20, 2012 at 04:44:22PM +0800, Fengguang Wu wrote:
> [ CC FS and MM lists ]
>
> Patch looks good to me, however we need to be careful because it's
> introducing a new interface. So it's desirable to get some acks from
> the FS/MM developers.
>
> Thanks,
> Fengguang
>
> On Sun, Sep 16,
On Thu 20-09-12 16:44:22, Wu Fengguang wrote:
> On Sun, Sep 16, 2012 at 08:25:42AM -0400, Namjae Jeon wrote:
> > From: Namjae Jeon
> >
> > This patch is based on suggestion by Wu Fengguang:
> > https://lkml.org/lkml/2011/8/19/19
> >
> > kernel has mechanism to do writeback as per dirty_ratio and
[ CC FS and MM lists ]
Patch looks good to me, however we need to be careful because it's
introducing a new interface. So it's desirable to get some acks from
the FS/MM developers.
Thanks,
Fengguang
On Sun, Sep 16, 2012 at 08:25:42AM -0400, Namjae Jeon wrote:
> From: Namjae Jeon
>
> This patch
From: Namjae Jeon
This patch is based on suggestion by Wu Fengguang:
https://lkml.org/lkml/2011/8/19/19
kernel has mechanism to do writeback as per dirty_ratio and dirty_background
ratio. It also maintains per task dirty rate limit to keep balance of
dirty pages at any given instance by doing bd
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