https://bugs.freedesktop.org/show_bug.cgi?id=91753
Bug ID: 91753 Summary: r300g: XXX Product: Mesa Version: git Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r300 Assignee: dri-devel@lists.freedesktop.org Reporter: stefandoesinger@gmx.at QA Contact: dri-devel@lists.freedesktop.org
When trying to run any GL application that renders something with r300g (e.g. glxgears) fails with the message "radeon: command stream overflowed". This is a regression caused by the following commit:
567394112d904096abff1d994ab952f475dfb444 is the first bad commit commit 567394112d904096abff1d994ab952f475dfb444 Author: Marek Olšák marek.olsak@amd.com Date: Fri Jul 31 11:45:13 2015 +0200
radeon/winsys: increase the IB size for VM
Luckily, there is a kernel query, so use the size from that. It currently returns 256KB. It can be increased in the kernel.
Reviewed-by: Michel Dänzer michel.daenzer@amd.com
I am running Linux 4.1.6 (+ some Gentoo patches) and libdrm 2.4.64. The X.org server version is 1.16.4 and the DDX driver is xf86-video-ati-7.5.0.
https://bugs.freedesktop.org/show_bug.cgi?id=91753
Stefan Dösinger stefandoesinger@gmx.at changed:
What |Removed |Added ---------------------------------------------------------------------------- Summary|r300g: XXX |r300g: command stream | |overflowed error since | |567394112d904096abff1d994ab | |952f475dfb444
https://bugs.freedesktop.org/show_bug.cgi?id=91753
Emil Velikov emil.l.velikov@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED
--- Comment #1 from Emil Velikov emil.l.velikov@gmail.com --- This commit has already been reverted and will be part of 11.0.0-rc2.
commit a83c36b5c0c64c717ced76db89bab900006648aa Author: Marek Olšák marek.olsak@amd.com Date: Sun Aug 23 18:57:44 2015 +0200
Revert "radeon/winsys: increase the IB size for VM"
This reverts commit 567394112d904096abff1d994ab952f475dfb444.
It regressed performance. It looks like smaller IBs are better, because the GPU goes idle quicker and there is less waiting for buffers and fences.
Cc: 11.0 mesa-stable@lists.freedesktop.org
https://bugs.freedesktop.org/show_bug.cgi?id=91753
--- Comment #2 from Stefan Dösinger stefandoesinger@gmx.at --- Oh, sorry for the spam then. I bisected this on Sunday and forgot to file an actual bug report until now. I'm comping the current git code at the moment to re-test.
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