re: kern/56542: radeon drawing updates sometimes slow in X

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR kern/56542; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
    netbsd-bugs%netbsd.org@localhost
Subject: re: kern/56542: radeon drawing updates sometimes slow in X
Date: Fri, 10 Dec 2021 07:05:55 +1100

 i've been seeing slowness on radeon since at least 2015 particular
 when switching virtual desktops.  it acts as if the X server and
 the applications are swapped out, almost, the re-draw is so slow
 and visible.
 
 it happens pretty infrequently for me, and i have not found any
 cause in my various investigations.
 
 
 i wonder if setting HZ=1000 makes the problem less severe.
 
 
 .mrg.