* [BUG] drm/panthor: intermittent freezes in Xorg xserver
@ 2026-06-26 11:50 ` Marius Dinu
0 siblings, 0 replies; 11+ messages in thread
From: Marius Dinu @ 2026-06-26 11:50 UTC (permalink / raw)
To: dri-devel, linux-rockchip; +Cc: Boris Brezillon, Steven Price, Liviu Dudau
Hi.
The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
The most clean way to reproduce this bug:
Form a console or ssh session, start Xorg in background, without a window
manager, and then run x11perf on that display.
Xorg :0 &
x11perf -all -display :0
The bug: weird intermittent performance issues in some of the tests.
Examples:
1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
There are no messages in kernel log or Xorg log.
Visually, most of the tests runs fast as expected, but in some of the tests
it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
Then, after a while (a few seconds up to a couple of minutes), it gets
unstuck by itself, draws a few more patterns extremely fast for less than a
second, and then it gets stuck again.
The small test patterns (10px) are a lot more often affected than large
patterns (100px or more).
The bug can also be seen by trying to move or resize windows.
Setting governors to "performance" for the CPU and/or GPU has no effect.
I'm available for tests.
Thanks.
Marius Dinu
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 11+ messages in thread
* [BUG] drm/panthor: intermittent freezes in Xorg xserver
@ 2026-06-26 11:50 ` Marius Dinu
0 siblings, 0 replies; 11+ messages in thread
From: Marius Dinu @ 2026-06-26 11:50 UTC (permalink / raw)
To: dri-devel, linux-rockchip; +Cc: Boris Brezillon, Steven Price, Liviu Dudau
Hi.
The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
The most clean way to reproduce this bug:
Form a console or ssh session, start Xorg in background, without a window
manager, and then run x11perf on that display.
Xorg :0 &
x11perf -all -display :0
The bug: weird intermittent performance issues in some of the tests.
Examples:
1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
There are no messages in kernel log or Xorg log.
Visually, most of the tests runs fast as expected, but in some of the tests
it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
Then, after a while (a few seconds up to a couple of minutes), it gets
unstuck by itself, draws a few more patterns extremely fast for less than a
second, and then it gets stuck again.
The small test patterns (10px) are a lot more often affected than large
patterns (100px or more).
The bug can also be seen by trying to move or resize windows.
Setting governors to "performance" for the CPU and/or GPU has no effect.
I'm available for tests.
Thanks.
Marius Dinu
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
2026-06-26 11:50 ` Marius Dinu
@ 2026-06-29 7:44 ` Boris Brezillon
-1 siblings, 0 replies; 11+ messages in thread
From: Boris Brezillon @ 2026-06-29 7:44 UTC (permalink / raw)
To: Marius Dinu; +Cc: dri-devel, linux-rockchip, Steven Price, Liviu Dudau
On Fri, 26 Jun 2026 14:50:17 +0300
Marius Dinu <m95d+git@psihoexpert.ro> wrote:
> Hi.
>
> The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
> mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
> xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
Are we sure that's a panthor issue? Also, is this a regression
introduced by the latest kernel version, or has it been like that from
the start?
Also, would you mind opening an issue on [1]?
>
> The most clean way to reproduce this bug:
> Form a console or ssh session, start Xorg in background, without a window
> manager, and then run x11perf on that display.
>
> Xorg :0 &
> x11perf -all -display :0
>
> The bug: weird intermittent performance issues in some of the tests.
> Examples:
>
> 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
> 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
>
> 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
> 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
>
> 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
> 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
> 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
> 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
> 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
> 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
>
> There are no messages in kernel log or Xorg log.
>
> Visually, most of the tests runs fast as expected, but in some of the tests
> it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
> Then, after a while (a few seconds up to a couple of minutes), it gets
> unstuck by itself, draws a few more patterns extremely fast for less than a
> second, and then it gets stuck again.
It smells like a signalling issue. Can you check the CPU activity and
report any outstanding process? Can you maybe connect a gdb to the
x11perf to see where it's blocked, and post the backtrace here (or in
the gitlab issue)?
Regards,
Boris
[1]https://gitlab.freedesktop.org/mesa/mesa
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
@ 2026-06-29 7:44 ` Boris Brezillon
0 siblings, 0 replies; 11+ messages in thread
From: Boris Brezillon @ 2026-06-29 7:44 UTC (permalink / raw)
To: Marius Dinu; +Cc: dri-devel, linux-rockchip, Steven Price, Liviu Dudau
On Fri, 26 Jun 2026 14:50:17 +0300
Marius Dinu <m95d+git@psihoexpert.ro> wrote:
> Hi.
>
> The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
> mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
> xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
Are we sure that's a panthor issue? Also, is this a regression
introduced by the latest kernel version, or has it been like that from
the start?
Also, would you mind opening an issue on [1]?
>
> The most clean way to reproduce this bug:
> Form a console or ssh session, start Xorg in background, without a window
> manager, and then run x11perf on that display.
>
> Xorg :0 &
> x11perf -all -display :0
>
> The bug: weird intermittent performance issues in some of the tests.
> Examples:
>
> 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
> 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
> 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
>
> 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
> 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
> 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
>
> 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
> 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
> 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
> 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
> 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
> 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
>
> There are no messages in kernel log or Xorg log.
>
> Visually, most of the tests runs fast as expected, but in some of the tests
> it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
> Then, after a while (a few seconds up to a couple of minutes), it gets
> unstuck by itself, draws a few more patterns extremely fast for less than a
> second, and then it gets stuck again.
It smells like a signalling issue. Can you check the CPU activity and
report any outstanding process? Can you maybe connect a gdb to the
x11perf to see where it's blocked, and post the backtrace here (or in
the gitlab issue)?
Regards,
Boris
[1]https://gitlab.freedesktop.org/mesa/mesa
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
2026-06-29 7:44 ` Boris Brezillon
(?)
@ 2026-06-29 8:31 ` Erik Faye-Lund
2026-06-29 8:51 ` Erik Faye-Lund
-1 siblings, 1 reply; 11+ messages in thread
From: Erik Faye-Lund @ 2026-06-29 8:31 UTC (permalink / raw)
To: Boris Brezillon
Cc: Marius Dinu, dri-devel, linux-rockchip, Steven Price, Liviu Dudau
[-- Attachment #1: Type: text/plain, Size: 3170 bytes --]
I wonder if you're experiencing the same issue as this?
https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15116
On Mon, Jun 29, 2026 at 10:24 AM Boris Brezillon <
boris.brezillon@collabora.com> wrote:
> On Fri, 26 Jun 2026 14:50:17 +0300
> Marius Dinu <m95d+git@psihoexpert.ro> wrote:
>
> > Hi.
> >
> > The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
> > mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost
> driver,
> > xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
>
> Are we sure that's a panthor issue? Also, is this a regression
> introduced by the latest kernel version, or has it been like that from
> the start?
>
> Also, would you mind opening an issue on [1]?
>
> >
> > The most clean way to reproduce this bug:
> > Form a console or ssh session, start Xorg in background, without a window
> > manager, and then run x11perf on that display.
> >
> > Xorg :0 &
> > x11perf -all -display :0
> >
> > The bug: weird intermittent performance issues in some of the tests.
> > Examples:
> >
> > 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
> > 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
> >
> > 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
> > 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
> >
> > 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
> > 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
> > 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
> > 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
> > 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
> > 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
> >
> > There are no messages in kernel log or Xorg log.
> >
> > Visually, most of the tests runs fast as expected, but in some of the
> tests
> > it gets "stuck" randomly. The test suddenly freezes while drawing the
> pattern.
> > Then, after a while (a few seconds up to a couple of minutes), it gets
> > unstuck by itself, draws a few more patterns extremely fast for less
> than a
> > second, and then it gets stuck again.
>
> It smells like a signalling issue. Can you check the CPU activity and
> report any outstanding process? Can you maybe connect a gdb to the
> x11perf to see where it's blocked, and post the backtrace here (or in
> the gitlab issue)?
>
> Regards,
>
> Boris
>
> [1]https://gitlab.freedesktop.org/mesa/mesa
>
[-- Attachment #2: Type: text/html, Size: 4115 bytes --]
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
2026-06-29 8:31 ` Erik Faye-Lund
@ 2026-06-29 8:51 ` Erik Faye-Lund
0 siblings, 0 replies; 11+ messages in thread
From: Erik Faye-Lund @ 2026-06-29 8:51 UTC (permalink / raw)
To: Boris Brezillon
Cc: Marius Dinu, dri-devel, linux-rockchip, Steven Price, Liviu Dudau
Silly me, I forgot to disable HTML email, so this one bounced for
some, resending. Sorry about the duplicate.
I wonder if you're experiencing the same issue as this?
https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15116
On Mon, Jun 29, 2026 at 10:31 AM Erik Faye-Lund <kusmabite@gmail.com> wrote:
>
> I wonder if you're experiencing the same issue as this?
>
> https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15116
>
> On Mon, Jun 29, 2026 at 10:24 AM Boris Brezillon <boris.brezillon@collabora.com> wrote:
>>
>> On Fri, 26 Jun 2026 14:50:17 +0300
>> Marius Dinu <m95d+git@psihoexpert.ro> wrote:
>>
>> > Hi.
>> >
>> > The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
>> > mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
>> > xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
>>
>> Are we sure that's a panthor issue? Also, is this a regression
>> introduced by the latest kernel version, or has it been like that from
>> the start?
>>
>> Also, would you mind opening an issue on [1]?
>>
>> >
>> > The most clean way to reproduce this bug:
>> > Form a console or ssh session, start Xorg in background, without a window
>> > manager, and then run x11perf on that display.
>> >
>> > Xorg :0 &
>> > x11perf -all -display :0
>> >
>> > The bug: weird intermittent performance issues in some of the tests.
>> > Examples:
>> >
>> > 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
>> > 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
>> >
>> > 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
>> > 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
>> >
>> > 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
>> > 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
>> >
>> > There are no messages in kernel log or Xorg log.
>> >
>> > Visually, most of the tests runs fast as expected, but in some of the tests
>> > it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
>> > Then, after a while (a few seconds up to a couple of minutes), it gets
>> > unstuck by itself, draws a few more patterns extremely fast for less than a
>> > second, and then it gets stuck again.
>>
>> It smells like a signalling issue. Can you check the CPU activity and
>> report any outstanding process? Can you maybe connect a gdb to the
>> x11perf to see where it's blocked, and post the backtrace here (or in
>> the gitlab issue)?
>>
>> Regards,
>>
>> Boris
>>
>> [1]https://gitlab.freedesktop.org/mesa/mesa
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
@ 2026-06-29 8:51 ` Erik Faye-Lund
0 siblings, 0 replies; 11+ messages in thread
From: Erik Faye-Lund @ 2026-06-29 8:51 UTC (permalink / raw)
To: Boris Brezillon
Cc: Marius Dinu, dri-devel, linux-rockchip, Steven Price, Liviu Dudau
Silly me, I forgot to disable HTML email, so this one bounced for
some, resending. Sorry about the duplicate.
I wonder if you're experiencing the same issue as this?
https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15116
On Mon, Jun 29, 2026 at 10:31 AM Erik Faye-Lund <kusmabite@gmail.com> wrote:
>
> I wonder if you're experiencing the same issue as this?
>
> https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15116
>
> On Mon, Jun 29, 2026 at 10:24 AM Boris Brezillon <boris.brezillon@collabora.com> wrote:
>>
>> On Fri, 26 Jun 2026 14:50:17 +0300
>> Marius Dinu <m95d+git@psihoexpert.ro> wrote:
>>
>> > Hi.
>> >
>> > The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
>> > mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
>> > xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
>>
>> Are we sure that's a panthor issue? Also, is this a regression
>> introduced by the latest kernel version, or has it been like that from
>> the start?
>>
>> Also, would you mind opening an issue on [1]?
>>
>> >
>> > The most clean way to reproduce this bug:
>> > Form a console or ssh session, start Xorg in background, without a window
>> > manager, and then run x11perf on that display.
>> >
>> > Xorg :0 &
>> > x11perf -all -display :0
>> >
>> > The bug: weird intermittent performance issues in some of the tests.
>> > Examples:
>> >
>> > 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
>> > 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
>> > 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
>> >
>> > 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
>> > 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
>> > 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
>> >
>> > 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
>> > 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
>> > 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
>> >
>> > There are no messages in kernel log or Xorg log.
>> >
>> > Visually, most of the tests runs fast as expected, but in some of the tests
>> > it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
>> > Then, after a while (a few seconds up to a couple of minutes), it gets
>> > unstuck by itself, draws a few more patterns extremely fast for less than a
>> > second, and then it gets stuck again.
>>
>> It smells like a signalling issue. Can you check the CPU activity and
>> report any outstanding process? Can you maybe connect a gdb to the
>> x11perf to see where it's blocked, and post the backtrace here (or in
>> the gitlab issue)?
>>
>> Regards,
>>
>> Boris
>>
>> [1]https://gitlab.freedesktop.org/mesa/mesa
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
2026-06-29 7:44 ` Boris Brezillon
@ 2026-06-29 9:26 ` Marius Dinu
-1 siblings, 0 replies; 11+ messages in thread
From: Marius Dinu @ 2026-06-29 9:26 UTC (permalink / raw)
To: Boris Brezillon
Cc: Marius Dinu, dri-devel, linux-rockchip, Steven Price, Liviu Dudau
On Mon, 2026-06-29 09.44.19 ++0200, Boris Brezillon wrote:
> On Fri, 26 Jun 2026 14:50:17 +0300
> Marius Dinu <m95d+git@psihoexpert.ro> wrote:
>
> > Hi.
> >
> > The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
> > mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
> > xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
>
> Are we sure that's a panthor issue? Also, is this a regression
> introduced by the latest kernel version, or has it been like that from
> the start?
It was from the start, not a regression. I think I started from v6.18 on this
board IIRC. If you need me to test earlier versions, say so.
>
> Also, would you mind opening an issue on [1]?
>
I already did.
https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15721
> >
> > The most clean way to reproduce this bug:
> > Form a console or ssh session, start Xorg in background, without a window
> > manager, and then run x11perf on that display.
> >
> > Xorg :0 &
> > x11perf -all -display :0
> >
> > The bug: weird intermittent performance issues in some of the tests.
> > Examples:
> >
> > 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
> > 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
> >
> > 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
> > 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
> >
> > 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
> > 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
> > 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
> > 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
> > 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
> > 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
> >
> > There are no messages in kernel log or Xorg log.
> >
> > Visually, most of the tests runs fast as expected, but in some of the tests
> > it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
> > Then, after a while (a few seconds up to a couple of minutes), it gets
> > unstuck by itself, draws a few more patterns extremely fast for less than a
> > second, and then it gets stuck again.
>
> It smells like a signalling issue. Can you check the CPU activity and
> report any outstanding process? Can you maybe connect a gdb to the
> x11perf to see where it's blocked, and post the backtrace here (or in
> the gitlab issue)?
>
x11perf is waiting on I/O (red "D" in htop). CPU is completely idle, not even
grey "io-wait" activity.
I have no experience using gdb. Please give me the exact command to run.
> Regards,
>
> Boris
>
> [1]https://gitlab.freedesktop.org/mesa/mesa
Marius
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
@ 2026-06-29 9:26 ` Marius Dinu
0 siblings, 0 replies; 11+ messages in thread
From: Marius Dinu @ 2026-06-29 9:26 UTC (permalink / raw)
To: Boris Brezillon
Cc: Marius Dinu, dri-devel, linux-rockchip, Steven Price, Liviu Dudau
On Mon, 2026-06-29 09.44.19 ++0200, Boris Brezillon wrote:
> On Fri, 26 Jun 2026 14:50:17 +0300
> Marius Dinu <m95d+git@psihoexpert.ro> wrote:
>
> > Hi.
> >
> > The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
> > mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
> > xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
>
> Are we sure that's a panthor issue? Also, is this a regression
> introduced by the latest kernel version, or has it been like that from
> the start?
It was from the start, not a regression. I think I started from v6.18 on this
board IIRC. If you need me to test earlier versions, say so.
>
> Also, would you mind opening an issue on [1]?
>
I already did.
https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15721
> >
> > The most clean way to reproduce this bug:
> > Form a console or ssh session, start Xorg in background, without a window
> > manager, and then run x11perf on that display.
> >
> > Xorg :0 &
> > x11perf -all -display :0
> >
> > The bug: weird intermittent performance issues in some of the tests.
> > Examples:
> >
> > 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
> > 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
> > 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
> >
> > 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
> > 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
> > 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
> >
> > 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
> > 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
> > 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
> > 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
> > 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
> > 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
> >
> > There are no messages in kernel log or Xorg log.
> >
> > Visually, most of the tests runs fast as expected, but in some of the tests
> > it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
> > Then, after a while (a few seconds up to a couple of minutes), it gets
> > unstuck by itself, draws a few more patterns extremely fast for less than a
> > second, and then it gets stuck again.
>
> It smells like a signalling issue. Can you check the CPU activity and
> report any outstanding process? Can you maybe connect a gdb to the
> x11perf to see where it's blocked, and post the backtrace here (or in
> the gitlab issue)?
>
x11perf is waiting on I/O (red "D" in htop). CPU is completely idle, not even
grey "io-wait" activity.
I have no experience using gdb. Please give me the exact command to run.
> Regards,
>
> Boris
>
> [1]https://gitlab.freedesktop.org/mesa/mesa
Marius
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
2026-06-29 8:51 ` Erik Faye-Lund
@ 2026-06-29 9:33 ` Marius Dinu
-1 siblings, 0 replies; 11+ messages in thread
From: Marius Dinu @ 2026-06-29 9:33 UTC (permalink / raw)
To: Erik Faye-Lund
Cc: Boris Brezillon, Marius Dinu, dri-devel, linux-rockchip,
Steven Price, Liviu Dudau
On Mon, 2026-06-29 10.51.32 ++0200, Erik Faye-Lund wrote:
> Silly me, I forgot to disable HTML email, so this one bounced for
> some, resending. Sorry about the duplicate.
>
> I wonder if you're experiencing the same issue as this?
>
> https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15116
>
I have no ideea. That bug report is way above my understanding. Sorry.
>
> > On Mon, Jun 29, 2026 at 10:24 AM Boris Brezillon <boris.brezillon@collabora.com> wrote:
> >>
> >> On Fri, 26 Jun 2026 14:50:17 +0300
> >> Marius Dinu <m95d+git@psihoexpert.ro> wrote:
> >>
> >> > Hi.
> >> >
> >> > The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
> >> > mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
> >> > xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
> >>
> >> Are we sure that's a panthor issue? Also, is this a regression
> >> introduced by the latest kernel version, or has it been like that from
> >> the start?
> >>
> >> Also, would you mind opening an issue on [1]?
> >>
> >> >
> >> > The most clean way to reproduce this bug:
> >> > Form a console or ssh session, start Xorg in background, without a window
> >> > manager, and then run x11perf on that display.
> >> >
> >> > Xorg :0 &
> >> > x11perf -all -display :0
> >> >
> >> > The bug: weird intermittent performance issues in some of the tests.
> >> > Examples:
> >> >
> >> > 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
> >> > 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
> >> >
> >> > 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
> >> > 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
> >> >
> >> > 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
> >> > 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
> >> >
> >> > There are no messages in kernel log or Xorg log.
> >> >
> >> > Visually, most of the tests runs fast as expected, but in some of the tests
> >> > it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
> >> > Then, after a while (a few seconds up to a couple of minutes), it gets
> >> > unstuck by itself, draws a few more patterns extremely fast for less than a
> >> > second, and then it gets stuck again.
> >>
> >> It smells like a signalling issue. Can you check the CPU activity and
> >> report any outstanding process? Can you maybe connect a gdb to the
> >> x11perf to see where it's blocked, and post the backtrace here (or in
> >> the gitlab issue)?
> >>
> >> Regards,
> >>
> >> Boris
> >>
> >> [1]https://gitlab.freedesktop.org/mesa/mesa
Marius
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 11+ messages in thread
* Re: [BUG] drm/panthor: intermittent freezes in Xorg xserver
@ 2026-06-29 9:33 ` Marius Dinu
0 siblings, 0 replies; 11+ messages in thread
From: Marius Dinu @ 2026-06-29 9:33 UTC (permalink / raw)
To: Erik Faye-Lund
Cc: Boris Brezillon, Marius Dinu, dri-devel, linux-rockchip,
Steven Price, Liviu Dudau
On Mon, 2026-06-29 10.51.32 ++0200, Erik Faye-Lund wrote:
> Silly me, I forgot to disable HTML email, so this one bounced for
> some, resending. Sorry about the duplicate.
>
> I wonder if you're experiencing the same issue as this?
>
> https://gitlab.freedesktop.org/mesa/mesa/-/work_items/15116
>
I have no ideea. That bug report is way above my understanding. Sorry.
>
> > On Mon, Jun 29, 2026 at 10:24 AM Boris Brezillon <boris.brezillon@collabora.com> wrote:
> >>
> >> On Fri, 26 Jun 2026 14:50:17 +0300
> >> Marius Dinu <m95d+git@psihoexpert.ro> wrote:
> >>
> >> > Hi.
> >> >
> >> > The system is Radxa Rock 5 ITX, RK3588, 32GB RAM,
> >> > mainline kernel v7.1.0 with panthor driver, mesa 26.0.7 with panfrost driver,
> >> > xorg-server v21.1.22 accelerated by modesetting driver, x11perf v1.7.0.
> >>
> >> Are we sure that's a panthor issue? Also, is this a regression
> >> introduced by the latest kernel version, or has it been like that from
> >> the start?
> >>
> >> Also, would you mind opening an issue on [1]?
> >>
> >> >
> >> > The most clean way to reproduce this bug:
> >> > Form a console or ssh session, start Xorg in background, without a window
> >> > manager, and then run x11perf on that display.
> >> >
> >> > Xorg :0 &
> >> > x11perf -all -display :0
> >> >
> >> > The bug: weird intermittent performance issues in some of the tests.
> >> > Examples:
> >> >
> >> > 1000 reps @ 18.0799 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 18.0791 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 18.0790 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 18.0789 msec ( 55.3/sec): 10x10 rectangle outline
> >> > 1000 reps @ 0.0287 msec ( 34800.0/sec): 10x10 rectangle outline
> >> > 5000 trep @ 14.4691 msec ( 69.1/sec): 10x10 rectangle outline
> >> >
> >> > 5000000 reps @ 0.0029 msec (345000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0009 msec (1100000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0012 msec (818000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0000 msec (20900000.0/sec): 1-pixel solid circle
> >> > 5000000 reps @ 0.0000 msec (32300000.0/sec): 1-pixel solid circle
> >> > 25000000 trep @ 0.0010 msec (979000.0/sec): 1-pixel solid circle
> >> >
> >> > 1000 reps @ 31.6607 msec ( 31.6/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 16.9012 msec ( 59.2/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 0.0234 msec ( 42700.0/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 0.0272 msec ( 36700.0/sec): Fill 10x10 trapezoid
> >> > 1000 reps @ 32.1268 msec ( 31.1/sec): Fill 10x10 trapezoid
> >> > 5000 trep @ 16.1479 msec ( 61.9/sec): Fill 10x10 trapezoid
> >> >
> >> > There are no messages in kernel log or Xorg log.
> >> >
> >> > Visually, most of the tests runs fast as expected, but in some of the tests
> >> > it gets "stuck" randomly. The test suddenly freezes while drawing the pattern.
> >> > Then, after a while (a few seconds up to a couple of minutes), it gets
> >> > unstuck by itself, draws a few more patterns extremely fast for less than a
> >> > second, and then it gets stuck again.
> >>
> >> It smells like a signalling issue. Can you check the CPU activity and
> >> report any outstanding process? Can you maybe connect a gdb to the
> >> x11perf to see where it's blocked, and post the backtrace here (or in
> >> the gitlab issue)?
> >>
> >> Regards,
> >>
> >> Boris
> >>
> >> [1]https://gitlab.freedesktop.org/mesa/mesa
Marius
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2026-06-29 9:33 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-06-26 11:50 [BUG] drm/panthor: intermittent freezes in Xorg xserver Marius Dinu
2026-06-26 11:50 ` Marius Dinu
2026-06-29 7:44 ` Boris Brezillon
2026-06-29 7:44 ` Boris Brezillon
2026-06-29 8:31 ` Erik Faye-Lund
2026-06-29 8:51 ` Erik Faye-Lund
2026-06-29 8:51 ` Erik Faye-Lund
2026-06-29 9:33 ` Marius Dinu
2026-06-29 9:33 ` Marius Dinu
2026-06-29 9:26 ` Marius Dinu
2026-06-29 9:26 ` Marius Dinu
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