Re: XP guests sluggish after around 1 week of uptime

[Avi Kivity]

jmandawg wrote:
It's definitely some kind of Disk IO problem, I can't even copy a 700MB file
on that guest without waiting a loooong time.  Running bonnie on my linux
guest shows considerable slow down in disk performance.
Results after a fresh Reboot of the Host:

r...@wserver:~# cat bonnieresults.txt
Version 1.03b       ------Sequential Output------ --Sequential Input-
--Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
--Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec
%CP
wserver        1G 10617  23 12241   1 10328   2 47915  93 301061  93  5095
98
                    ------Sequential Create------ --------Random
Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec
%CP
                 16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++
+++
wserver,1G,10617,23,12241,1,10328,2,47915,93,301061,93,5094.8,98,16,+++++,++
+,                    +++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++

Results after noticing considerable slow down on other guest machine:

r...@wserver:~# cat bonnieresults_SLOW.txt
Version 1.03b       ------Sequential Output------ --Sequential Input-
--Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
--Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec
%CP
wserver        1G  2252   3  3771   0  6844   1 46057  70 355858  50 752.3
7
                    ------Sequential Create------ --------Random
Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec
%CP
                 16 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++
+++
wserver,1G,2252,3,3771,0,6844,1,46057,70,355858,50,752.3,7,16,+++++,+++,++++
+,                    +++,+++++,+++,+++++,+++,+++++,+++,+++++,+++

After a reboot of the host, they guest are fine again, but for how long...

Any advice or suggestions?
  

What does 'top' show for the guests?  I'm interested in qemu's VIRT and 
RES columns.

Also, 'vmstat 1' on host and guest while slow copying is happening.


--
error compiling committee.c: too many arguments to function

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