Bug 63192

Summary:	[nouveau] drmModeSetCursor->nouveau_bo_rd32->ioread32 provides high cpu load when using weston drm-compositor
Product:	xorg	Reporter:	Vova <vova7890>
Component:	Driver/nouveau	Assignee:	Nouveau Project <nouveau>
Status:	RESOLVED INVALID	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium	CC:	vova7890
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Vova 2013-04-06 00:14:24 UTC

Weston runned in drm-mode provide very high cpu load on mouse moving. I don`t think that the bug of weston, seems problem in nouveau drm. At launch weston have a log:

...
[24465.734894] nouveau W[   PFIFO][0000:02:00.0] INTR 0x00000001: 0x00000004
[24465.748153] nouveau W[   PFIFO][0000:02:00.0] INTR 0x00000001: 0x00000004
[24521.950788] nouveau W[   PFIFO][0000:02:00.0] INTR 0x00000001: 0x00000004
[24521.955032] nouveau W[   PFIFO][0000:02:00.0] INTR 0x00000001: 0x00000004
...


ioread32_native(ioread32 on litle-endian) using 100% of cpu core. If in weston comment out drmModeSetCursor - cpu load is normal, but no see cursor ofcourse. They copying cursor(64x64) from bo-object. Seems TTM iomem access provide very high cpu load... On radeon it works smoothly and no have very high cpu load.


Kernel 3.9-rc5 (x86_64)
Wayland/Weston: git
Mesa: git
libdrm: git

Comment 1 Pierre Moreau 2014-12-09 18:39:12 UTC

Moving to Nouveau.

Are you still experiencing this issue with an updated graphic stack, aka. kernel 3.18, mesa 10.4, libdrm 2.4.58 and waylaid/weston 1.6?
(The bug went unnoticed as it wasn't linked to Nouveau.)

Comment 2 Ilia Mirkin 2015-10-22 05:10:00 UTC

No response to retest request in a year. Marking invalid.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.