https://bugs.freedesktop.org/show_bug.cgi?id=81323
Priority: medium
Bug ID: 81323
Assignee: [email protected]
Summary: weston, when under x11, in sw-render mode, uses lots
of processing power
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: [email protected]
Hardware: x86-64 (AMD64)
Status: NEW
Version: 1.5.0
Component: weston
Product: Wayland
there is (briefly) high cpu usage when launching 'weston' (under x11 with
forced software rendering), and continuously as one moves the cursor around in
that session. cpu usage is consistently around 30-40% on all cores as the
cursor moves. otherwise, there is not much computation happening.
without sw-rendering, this is not an issue under x11.
when using weston-launch under a tty, in sw-rendering mode, there is no
apparent performance hit, and htop shows no significant cpu usage.
to force software rendering before launching weston:
$ export LIBGL_ALWAYS_SOFTWARE=1
i'm using weston master.
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