Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1502627 > unrolled thread

Re: [4.9-rc1] Build-time 2x slower

Started byMing Lei <tom.leiming@gmail.com>
First post2016-10-18 03:40 +0200
Last post2016-10-20 09:50 +0200
Articles 2 on this page of 22 — 5 participants

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.


Contents

  Re: [4.9-rc1] Build-time 2x slower Ming Lei <tom.leiming@gmail.com> - 2016-10-18 03:40 +0200
    Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-18 11:40 +0200
      Re: [4.9-rc1] Build-time 2x slower Jörg Otte <jrg.otte@gmail.com> - 2016-10-18 19:00 +0200
        Re: [4.9-rc1] Build-time 2x slower Linus Torvalds <torvalds@linux-foundation.org> - 2016-10-18 19:20 +0200
          Re: [4.9-rc1] Build-time 2x slower Jörg Otte <jrg.otte@gmail.com> - 2016-10-19 17:30 +0200
            Re: [4.9-rc1] Build-time 2x slower Linus Torvalds <torvalds@linux-foundation.org> - 2016-10-19 17:30 +0200
              Re: [4.9-rc1] Build-time 2x slower Jörg Otte <jrg.otte@gmail.com> - 2016-10-19 19:00 +0200
                Re: [4.9-rc1] Build-time 2x slower "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-10-19 22:50 +0200
                  Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-20 09:50 +0200
                    Re: [4.9-rc1] Build-time 2x slower "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-10-20 13:10 +0200
                      Re: [4.9-rc1] Build-time 2x slower "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-10-20 16:30 +0200
                        Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-20 16:40 +0200
                          Re: [4.9-rc1] Build-time 2x slower "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-10-20 16:50 +0200
                        Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-21 03:00 +0200
                      Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-20 16:30 +0200
                  Re: [4.9-rc1] Build-time 2x slower Jörg Otte <jrg.otte@gmail.com> - 2016-10-20 10:00 +0200
                    Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-20 10:10 +0200
                    Re: [4.9-rc1] Build-time 2x slower "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-10-20 13:10 +0200
                      Re: [4.9-rc1] Build-time 2x slower Jörg Otte <jrg.otte@gmail.com> - 2016-10-20 16:40 +0200
                        Re: [4.9-rc1] Build-time 2x slower "Rafael J. Wysocki" <rjw@rjwysocki.net> - 2016-10-20 16:50 +0200
                Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-20 09:30 +0200
              Re: [4.9-rc1] Build-time 2x slower Sedat Dilek <sedat.dilek@gmail.com> - 2016-10-20 09:50 +0200

Page 2 of 2 — ← Prev page 1 [2]


#1504575

FromSedat Dilek <sedat.dilek@gmail.com>
Date2016-10-20 09:30 +0200
Message-ID<sufXz-4qj-19@gated-at.bofh.it>
In reply to#1504136
On Wed, Oct 19, 2016 at 6:59 PM, Jörg Otte <jrg.otte@gmail.com> wrote:
> 2016-10-19 17:29 GMT+02:00 Linus Torvalds <torvalds@linux-foundation.org>:
>> On Wed, Oct 19, 2016 at 4:07 AM, Jörg Otte <jrg.otte@gmail.com> wrote:
>>>
>>> Additional info: I usally use schedutil governor.
>>> If I switch to performance governor problems go away.
>>> Maybe a cpufreq problem?
>>
>> Oh, I completely misread the original bug report, and then didn't read
>> your confirmation email right.
>>
>> I thought you had a slower build of the different kernels (when
>> building on the same kernel), and that the _build_ itself had slowed
>> down for some reason. But you're actually saying that doing the _same_
>> build actually takes longer when running on 4.9-rc1.
>
> Exactly!
>
> Btw: ondemand governor is also good.
>
>> There are a few small cpufreq changes there in between commit
>> 29fbff8698fc (that you reported was fine - please tell me I got _that_
>> right, at least?) and 4.9-rc1.
>
> Perfect! That's what I mean.
>
>> Adding Rafael to the cc.
>>
>> That said, none of them look all that likely to me. It *would* be good
>> if you could bisect it a bit (perhaps not fully, but a couple of
>> bisection steps to narrow down what area it is).
>
> I try that tomorrow.
>

I switched over to ***schedutil*** as default-cpufreq-governor with
v4.8 in my init-scripts.
Didn't try any other cpufreq-governor and had no time to play more
with this issue.

- Sedat -

[toc] | [prev] | [next] | [standalone]


#1504595

FromSedat Dilek <sedat.dilek@gmail.com>
Date2016-10-20 09:50 +0200
Message-ID<suggV-4xL-5@gated-at.bofh.it>
In reply to#1503919
On Wed, Oct 19, 2016 at 5:29 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
> On Wed, Oct 19, 2016 at 4:07 AM, Jörg Otte <jrg.otte@gmail.com> wrote:
>>
>> Additional info: I usally use schedutil governor.
>> If I switch to performance governor problems go away.
>> Maybe a cpufreq problem?
>
> Oh, I completely misread the original bug report, and then didn't read
> your confirmation email right.
>
> I thought you had a slower build of the different kernels (when
> building on the same kernel), and that the _build_ itself had slowed
> down for some reason. But you're actually saying that doing the _same_
> build actually takes longer when running on 4.9-rc1.
>
> My bad.
>

English is not my native language.
To clarify building whatever Linux-version "under Linux v4.9-rc1" means...
Running Linux v4.9-rc1...
( ...with schedutil as cpufreq-governor... )
and building software in this environment.

- Sedat -

> There are a few small cpufreq changes there in between commit
> 29fbff8698fc (that you reported was fine - please tell me I got _that_
> right, at least?) and 4.9-rc1. Adding Rafael to the cc.
>
> That said, none of them look all that likely to me. It *would* be good
> if you could bisect it a bit (perhaps not fully, but a couple of
> bisection steps to narrow down what area it is).
>
>                  Linus

[toc] | [prev] | [standalone]


Page 2 of 2 — ← Prev page 1 [2]

Back to top | Article view | linux.kernel


csiph-web