From: Rong Chen <rong.a.chen@intel.com>
To: Thomas Zimmermann <tzimmermann@suse.de>, Feng Tang <feng.tang@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
michel@daenzer.net, lkp@01.org, linux-kernel@vger.kernel.org,
dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [LKP] [drm/mgag200] 90f479ae51: vm-scalability.median -18.8% regression
Date: Wed, 28 Aug 2019 17:37:01 +0800 [thread overview]
Message-ID: <90e78ce8-d46a-5154-c324-a05aa1743c98@intel.com> (raw)
In-Reply-To: <44029e80-ba00-8246-dec0-fda122d53f5e@suse.de>
Hi Thomas,
On 8/28/19 1:16 AM, Thomas Zimmermann wrote:
> Hi
>
> Am 27.08.19 um 14:33 schrieb Chen, Rong A:
>> Both patches have little impact on the performance from our side.
> Thanks for testing. Too bad they doesn't solve the issue.
>
> There's another patch attached. Could you please tests this as well?
> Thanks a lot!
>
> The patch comes from Daniel Vetter after discussing the problem on IRC.
> The idea of the patch is that the old mgag200 code might display much
> less frames that the generic code, because mgag200 only prints from
> non-atomic context. If we simulate this with the generic code, we should
> see roughly the original performance.
>
>
It's cool, the patch "usecansleep.patch" can fix the issue.
commit:
f1f8555dfb9 drm/bochs: Use shadow buffer for bochs framebuffer console
90f479ae51a drm/mgag200: Replace struct mga_fbdev with generic
framebuffer emulation
b976b04c2bc only schedule worker from non-atomic context
f1f8555dfb9a70a2 90f479ae51afa45efab97afdde b976b04c2bcf33148d6c7bc1a2
testcase/testparams/testbox
---------------- -------------------------- --------------------------
---------------------------
%stddev change %stddev change %stddev
\ | \ | \
42912 -15% 36517 44093
vm-scalability/performance-300s-8T-anon-cow-seq-hugetlb/lkp-knm01
42912 -15% 36517 44093 GEO-MEAN
vm-scalability.median
Best Regards,
Rong Chen
WARNING: multiple messages have this Message-ID (diff)
From: Rong Chen <rong.a.chen@intel.com>
To: lkp@lists.01.org
Subject: Re: [drm/mgag200] 90f479ae51: vm-scalability.median -18.8% regression
Date: Wed, 28 Aug 2019 17:37:01 +0800 [thread overview]
Message-ID: <90e78ce8-d46a-5154-c324-a05aa1743c98@intel.com> (raw)
In-Reply-To: <44029e80-ba00-8246-dec0-fda122d53f5e@suse.de>
[-- Attachment #1: Type: text/plain, Size: 1676 bytes --]
Hi Thomas,
On 8/28/19 1:16 AM, Thomas Zimmermann wrote:
> Hi
>
> Am 27.08.19 um 14:33 schrieb Chen, Rong A:
>> Both patches have little impact on the performance from our side.
> Thanks for testing. Too bad they doesn't solve the issue.
>
> There's another patch attached. Could you please tests this as well?
> Thanks a lot!
>
> The patch comes from Daniel Vetter after discussing the problem on IRC.
> The idea of the patch is that the old mgag200 code might display much
> less frames that the generic code, because mgag200 only prints from
> non-atomic context. If we simulate this with the generic code, we should
> see roughly the original performance.
>
>
It's cool, the patch "usecansleep.patch" can fix the issue.
commit:
f1f8555dfb9 drm/bochs: Use shadow buffer for bochs framebuffer console
90f479ae51a drm/mgag200: Replace struct mga_fbdev with generic
framebuffer emulation
b976b04c2bc only schedule worker from non-atomic context
f1f8555dfb9a70a2 90f479ae51afa45efab97afdde b976b04c2bcf33148d6c7bc1a2
testcase/testparams/testbox
---------------- -------------------------- --------------------------
---------------------------
%stddev change %stddev change %stddev
\ | \ | \
42912 -15% 36517 44093
vm-scalability/performance-300s-8T-anon-cow-seq-hugetlb/lkp-knm01
42912 -15% 36517 44093 GEO-MEAN
vm-scalability.median
Best Regards,
Rong Chen
next prev parent reply other threads:[~2019-08-28 9:37 UTC|newest]
Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-29 9:51 [drm/mgag200] 90f479ae51: vm-scalability.median -18.8% regression kernel test robot
2019-07-29 9:51 ` kernel test robot
2019-07-30 17:50 ` Thomas Zimmermann
2019-07-30 17:50 ` Thomas Zimmermann
2019-07-30 18:12 ` Daniel Vetter
2019-07-30 18:12 ` Daniel Vetter
2019-07-30 18:50 ` Thomas Zimmermann
2019-07-30 18:50 ` Thomas Zimmermann
2019-07-30 18:59 ` Daniel Vetter
2019-07-30 18:59 ` Daniel Vetter
2019-07-30 20:26 ` Dave Airlie
2019-07-30 20:26 ` Dave Airlie
2019-07-31 8:13 ` Daniel Vetter
2019-07-31 8:13 ` Daniel Vetter
2019-07-31 9:25 ` [LKP] " Huang, Ying
2019-07-31 9:25 ` Huang, Ying
2019-07-31 10:12 ` [LKP] " Thomas Zimmermann
2019-07-31 10:12 ` Thomas Zimmermann
2019-07-31 10:21 ` [LKP] " Michel Dänzer
2019-08-01 6:19 ` Rong Chen
2019-08-01 6:19 ` Rong Chen
2019-08-01 8:37 ` [LKP] " Feng Tang
2019-08-01 8:37 ` Feng Tang
2019-08-01 9:59 ` [LKP] " Thomas Zimmermann
2019-08-01 9:59 ` Thomas Zimmermann
2019-08-01 11:25 ` [LKP] " Feng Tang
2019-08-01 11:25 ` Feng Tang
2019-08-01 11:58 ` [LKP] " Thomas Zimmermann
2019-08-01 11:58 ` Thomas Zimmermann
2019-08-02 7:11 ` [LKP] " Rong Chen
2019-08-02 7:11 ` Rong Chen
2019-08-02 8:23 ` [LKP] " Thomas Zimmermann
2019-08-02 8:23 ` Thomas Zimmermann
2019-08-02 9:20 ` [LKP] " Thomas Zimmermann
2019-08-02 9:20 ` Thomas Zimmermann
2019-08-01 9:57 ` [LKP] " Thomas Zimmermann
2019-08-01 9:57 ` Thomas Zimmermann
2019-08-01 13:30 ` [LKP] " Michel Dänzer
2019-08-02 8:17 ` Thomas Zimmermann
2019-08-02 8:17 ` Thomas Zimmermann
2019-07-31 10:10 ` Thomas Zimmermann
2019-07-31 10:10 ` Thomas Zimmermann
2019-08-02 9:11 ` Daniel Vetter
2019-08-02 9:11 ` Daniel Vetter
2019-08-02 9:26 ` Thomas Zimmermann
2019-08-02 9:26 ` Thomas Zimmermann
2019-08-04 18:39 ` Thomas Zimmermann
2019-08-04 18:39 ` Thomas Zimmermann
2019-08-05 7:02 ` Feng Tang
2019-08-05 7:02 ` Feng Tang
2019-08-05 7:28 ` Rong Chen
2019-08-05 10:25 ` Thomas Zimmermann
2019-08-05 10:25 ` Thomas Zimmermann
2019-08-06 12:59 ` [LKP] " Chen, Rong A
2019-08-06 12:59 ` Chen, Rong A
2019-08-07 10:42 ` [LKP] " Thomas Zimmermann
2019-08-07 10:42 ` Thomas Zimmermann
2019-08-09 8:12 ` [LKP] " Rong Chen
2019-08-09 8:12 ` Rong Chen
2019-08-12 7:25 ` [LKP] " Feng Tang
2019-08-12 7:25 ` Feng Tang
2019-08-13 9:36 ` [LKP] " Feng Tang
2019-08-13 9:36 ` Feng Tang
2019-08-13 9:36 ` [LKP] " Feng Tang
2019-08-16 6:55 ` Feng Tang
2019-08-16 6:55 ` Feng Tang
2019-08-22 17:25 ` [LKP] " Thomas Zimmermann
2019-08-22 17:25 ` Thomas Zimmermann
2019-08-22 17:25 ` [LKP] " Thomas Zimmermann
2019-08-22 20:02 ` Dave Airlie
2019-08-22 20:02 ` Dave Airlie
2019-08-23 9:54 ` [LKP] " Thomas Zimmermann
2019-08-23 9:54 ` Thomas Zimmermann
2019-08-23 9:54 ` [LKP] " Thomas Zimmermann
2019-08-24 5:16 ` Feng Tang
2019-08-24 5:16 ` Feng Tang
2019-08-24 5:16 ` [LKP] " Feng Tang
2019-08-26 10:50 ` Thomas Zimmermann
2019-08-26 10:50 ` Thomas Zimmermann
2019-08-27 12:33 ` [LKP] " Chen, Rong A
2019-08-27 12:33 ` Chen, Rong A
2019-08-27 12:33 ` [LKP] " Chen, Rong A
2019-08-27 17:16 ` Thomas Zimmermann
2019-08-27 17:16 ` Thomas Zimmermann
2019-08-28 9:37 ` Rong Chen [this message]
2019-08-28 9:37 ` Rong Chen
2019-08-28 10:51 ` [LKP] " Thomas Zimmermann
2019-08-28 10:51 ` Thomas Zimmermann
2019-09-04 6:27 ` [LKP] " Feng Tang
2019-09-04 6:27 ` Feng Tang
2019-09-04 6:53 ` [LKP] " Thomas Zimmermann
2019-09-04 6:53 ` Thomas Zimmermann
2019-09-04 8:11 ` [LKP] " Daniel Vetter
2019-09-04 8:11 ` Daniel Vetter
2019-09-04 8:35 ` [LKP] " Feng Tang
2019-09-04 8:35 ` Feng Tang
2019-09-04 8:43 ` [LKP] " Thomas Zimmermann
2019-09-04 8:43 ` Thomas Zimmermann
2019-09-04 14:30 ` [LKP] " Chen, Rong A
2019-09-04 14:30 ` Chen, Rong A
2019-09-04 9:17 ` [LKP] " Daniel Vetter
2019-09-04 9:17 ` Daniel Vetter
2019-09-04 11:15 ` [LKP] " Dave Airlie
2019-09-04 11:15 ` Dave Airlie
2019-09-04 11:20 ` [LKP] " Daniel Vetter
2019-09-04 11:20 ` Daniel Vetter
2019-09-04 11:20 ` [LKP] " Daniel Vetter
2019-09-05 6:59 ` Feng Tang
2019-09-05 6:59 ` Feng Tang
2019-09-05 10:37 ` [LKP] " Daniel Vetter
2019-09-05 10:37 ` Daniel Vetter
2019-09-05 10:48 ` [LKP] " Feng Tang
2019-09-05 10:48 ` Feng Tang
2019-09-05 10:48 ` [LKP] " Feng Tang
2019-09-09 14:12 ` Thomas Zimmermann
2019-09-09 14:12 ` Thomas Zimmermann
2019-09-09 14:12 ` [LKP] " Thomas Zimmermann
2019-09-16 9:06 ` Feng Tang
2019-09-16 9:06 ` Feng Tang
2019-09-17 8:48 ` [LKP] " Thomas Zimmermann
2019-09-17 8:48 ` Thomas Zimmermann
2019-09-17 8:48 ` [LKP] " Thomas Zimmermann
2019-08-05 10:22 ` Thomas Zimmermann
2019-08-05 10:22 ` Thomas Zimmermann
2019-08-05 12:52 ` Feng Tang
2019-08-05 12:52 ` Feng Tang
2020-01-06 13:19 ` Thomas Zimmermann
2020-01-06 13:19 ` Thomas Zimmermann
2020-01-08 2:25 ` Rong Chen
2020-01-08 2:28 ` Rong Chen
2020-01-08 5:20 ` Thomas Zimmermann
2020-01-08 5:20 ` Thomas Zimmermann
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