Xen 4.1.3 affects GUI responsivness

[marmarek]

Reported by joanna on 11 Dec 2012 10:18 UTC
GUI responsiveness issues discussed earlier via email seem to be caused by the new Xen 4.1.3. After I downgraded to 4.1.2 the issues are no longer noticeable.

The GUI responsiveness problems can be observed when one of the AppVMs run CPU heavy job, such as large programs build -- in that case the issue can be observed using e.g. the Expose effect, or even simple workspace switching (with animation), which do not run smoothly anymore. Sometime even mouse movements are heavily affected making the system hard to use.

Migrated-From: https://wiki.qubes-os.org/ticket/689

[marmarek]

Comment by marmarek on 11 Dec 2012 11:43 UTC
Can you check vCPU assignment (xl vcpu-list)? Perhaps all are running on the same physical CPU. I had this problem once on 4.1.3 and symptoms are similar.

[marmarek]

Comment by marmarek on 11 Dec 2012 11:43 UTC
Can you check vCPU assignment (xl vcpu-list)? Perhaps all are running on the same physical CPU. I had this problem once on 4.1.3 and symptoms are similar.

[marmarek]

Comment by joanna on 11 Dec 2012 14:30 UTC
I just checked on my test machine where Xen 4.1.3 was still running -- the vCPU->pCPU assignment looked mostly like permutations for most cases, no ideal, but mostly. Generally looks similar to what I see on Xen 4.1.2. This seems unrelated to me.

[marmarek]

Comment by joanna on 11 Dec 2012 14:30 UTC
I just checked on my test machine where Xen 4.1.3 was still running -- the vCPU->pCPU assignment looked mostly like permutations for most cases, no ideal, but mostly. Generally looks similar to what I see on Xen 4.1.2. This seems unrelated to me.

[marmarek]

Comment by marmarek on 12 Dec 2012 01:45 UTC
Reverted to 4.1.2.
http://git.qubes-os.org/?p=marmarek/xen.git;a=commit;h=cb4600798d7db26ca82751f4f60e308fef9aaeda

[marmarek]

Comment by marmarek on 12 Dec 2012 01:45 UTC
Reverted to 4.1.2.
http://git.qubes-os.org/?p=marmarek/xen.git;a=commit;h=cb4600798d7db26ca82751f4f60e308fef9aaeda