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List:       kde-bugs-dist
Subject:    [kwin] [Bug 322060] Synced swapping on double buffered nvidia GPUs cause high CPU load
From:       Lastique <bugzilla_noreply () kde ! org>
Date:       2018-02-01 17:01:43
Message-ID: bug-322060-17878-J7bA2mxFIU () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=322060

--- Comment #140 from Lastique <andysem@mail.ru> ---
BTW, in that Nvidia thread, a driver developer says:

> The claim that __GL_YIELD=usleep is required points at an application bug, possibly \
> a race condition due to missing synchronization.

So if anyone is fixing tearing by that option (i.e. the tearing is present
without it and not present with it), then, according to Nvidia, the bug is in
Kwin.

On my system though, __GL_YIELD=usleep has no influence on tearing, only on CPU
consumption.

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