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Re: [fuse-devel] Horrible mmap write performance (kernel writeback issue?)

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  Re: [fuse-devel] Horrible mmap write performance (kernel writeback issue?) Sedat Dilek <sedat.dilek@gmail.com> - 2016-05-02 11:40 +0200
    Re: [fuse-devel] Horrible mmap write performance (kernel writeback issue?) Sedat Dilek <sedat.dilek@gmail.com> - 2016-05-11 09:10 +0200

#1392091 — Re: [fuse-devel] Horrible mmap write performance (kernel writeback issue?)

On 4/25/16, Sedat Dilek <sedat.dilek@gmail.com> wrote:
> On Wed, Apr 20, 2016 at 3:35 AM, Howard Cochran
> <hcochran@kernelspring.com> wrote:
>> On Mon, Apr 18, 2016 at 5:06 PM, Jakob Unterwurzacher
>> <jakobunt@gmail.com> wrote:
>>> On 12.04.2016 13:09, Tejun Heo wrote:
>>>>>
>>>>> Probably you want to look into:
>>>>> https://lkml.org/lkml/2016/3/10/21
>>>>>
>>>>> The patch mentioned above solves the issue for me.
>>>>
>>>> Heh, I tracked it down to wb_over_bg_thresh() and fell asleep.  Yeah,
>>>> that is the right fix.
>>>
>>> Works wonderfully now, thanks to everybody involved. Is it too late for
>>> 4.6?
>>>
>>> Best regards,
>>> Jakob
>>>
>> Jakob, et. al.
>>
>> You're welcome.  That performance problem stumped me for a couple of
>> weeks until tracked it down and submitted the fix.
>>
>
> What has happened to "writeback: Fix performance regression in
> wb_over_bg_thresh()"?
> I checked Linux v4.6-rc5, it is not included.
> Is it in another Git tree? If yes, where?
>

Ping!

Patch from Howard ist still not in Linus upstream aka Linux v4.6-rc6.
Comments, please.

- sed@ -

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#1398722

On 5/11/16, Jakob Unterwurzacher <jakobunt@gmail.com> wrote:
> Landed in 4.6-rc7:
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=74d369443325063a5f0260e63971decb950fd8fa
>

Top-posting :-(.

Linux v4.4.10 and v4.5.4 final (currently in review as
4.4.10-rc1/4.5.4-rc1) will have it, too.

- Sedat -

> On Mon, May 2, 2016 at 11:39 AM, Sedat Dilek <sedat.dilek@gmail.com> wrote:
>
>> On 4/25/16, Sedat Dilek <sedat.dilek@gmail.com> wrote:
>> > On Wed, Apr 20, 2016 at 3:35 AM, Howard Cochran
>> > <hcochran@kernelspring.com> wrote:
>> >> On Mon, Apr 18, 2016 at 5:06 PM, Jakob Unterwurzacher
>> >> <jakobunt@gmail.com> wrote:
>> >>> On 12.04.2016 13:09, Tejun Heo wrote:
>> >>>>>
>> >>>>> Probably you want to look into:
>> >>>>> https://lkml.org/lkml/2016/3/10/21
>> >>>>>
>> >>>>> The patch mentioned above solves the issue for me.
>> >>>>
>> >>>> Heh, I tracked it down to wb_over_bg_thresh() and fell asleep.
>> >>>> Yeah,
>> >>>> that is the right fix.
>> >>>
>> >>> Works wonderfully now, thanks to everybody involved. Is it too late
>> >>> for
>> >>> 4.6?
>> >>>
>> >>> Best regards,
>> >>> Jakob
>> >>>
>> >> Jakob, et. al.
>> >>
>> >> You're welcome.  That performance problem stumped me for a couple of
>> >> weeks until tracked it down and submitted the fix.
>> >>
>> >
>> > What has happened to "writeback: Fix performance regression in
>> > wb_over_bg_thresh()"?
>> > I checked Linux v4.6-rc5, it is not included.
>> > Is it in another Git tree? If yes, where?
>> >
>>
>> Ping!
>>
>> Patch from Howard ist still not in Linus upstream aka Linux v4.6-rc6.
>> Comments, please.
>>
>> - sed@ -
>>
>

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