On Mon, 2026-06-29 09.44.19 ++0200, Boris Brezillon wrote: > On Fri, 26 Jun 2026 14:50:17 +0300 > Marius Dinu <[email protected]> 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
