From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 104598] vkmark with kwin compositing: Page flip failed: Cannot allocate memory
Date: Tue, 15 May 2018 16:18:57 +0000 [thread overview]
Message-ID: <bug-104598-502-Qp32svWO97@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-104598-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=104598
Michel Dänzer <michel@daenzer.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|DRM/AMDgpu |DRM/other
--- Comment #7 from Michel Dänzer <michel@daenzer.net> ---
Thanks, I was finally able to reproduce this. Seems like it's only reproducible
if the app runs at >= ~10K FPS.
It happens because the client submits so many PresentPixmap requests within a
single vertical blank period that the corresponding DRM vblank events fill up
the kernel DRM event queue. Then when the compositor sends a PresentPixmap
request, the page flip ioctl gets -ENOMEM from drm_event_reserve_init and
propagates it. (That the modesetting driver can't deal with this is its bug)
Options for addressing this:
The kernel might allow queuing page flip events even when the queue is full
with vblank events.
The xserver present code should be able to re-use a single DRM vblank event for
multiple client requests with the same target MSC.
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next prev parent reply other threads:[~2018-05-15 16:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-104598-502@http.bugs.freedesktop.org/>
2018-01-12 11:48 ` [Bug 104598] vkmark with kwin compositing: Page flip failed: Cannot allocate memory bugzilla-daemon
2018-01-12 15:15 ` bugzilla-daemon
2018-01-12 15:21 ` bugzilla-daemon
2018-01-12 15:53 ` bugzilla-daemon
2018-04-27 16:39 ` bugzilla-daemon
2018-05-14 8:21 ` bugzilla-daemon
2018-05-15 16:18 ` bugzilla-daemon [this message]
2018-05-16 7:58 ` bugzilla-daemon
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