I agree we should not change the behavior too much now that
FeatureFreeze is passed. Adjusting tasks in consequence.
** Changed in: qemu-kvm (Ubuntu Maverick)
Status: New => Won't Fix
** Changed in: qemu-kvm (Ubuntu)
Importance: Undecided => Wishlist
** Changed in: qemu-kvm (Ubuntu)
Thanks for the info Nullzone! Based on your data, I'm going to spend a
bit of time running with:
# To disable qemu-kvm's page merging feature, set KSM_ENABLED=0 and
# sudo restart qemu-kvm
KSM_ENABLED=1
#SLEEP_MILLISECS=2000
SLEEP_MILLISECS=50
PAGES_TO_SCAN=100
i
@Nullzone: that's some very good input, thanks. Looking at your
conclusions:
> ksm is good but need some tweaks to doesnt become a problem more than a help
Right, if there is a saner default we should use it, and if there is no sane
default we should consider disabling it by default, with strong
Hello Thierry,
I will try to help showing some information gathered from my lab server as
you requested:
- Enviroment:
10 x Ubuntu 10.04 x86_64 with several services (SMTP, MySQL, Oracle, DB2,
TeamSpeak servers, Tomcats, bind ... etc).
1 x Windows 7 x86_64
3 x Debian Lenny x86_64 (isc
17% sounds a bit strong... I'd very much like to see a memory gain / CPU
usage chart for various values, or more discussion around the acceptable
value upstream. Any idea what the other qemu-kvm distributions are using
as a default ?
** Also affects: qemu-kvm (Ubuntu Maverick)
Importance: Undec
This does seem to be a valid bug, some serious CPU time is being
dedicated to ksmd. Whilst I haven't seen it in Lucid, i have
experienced it in Maverick. Smoser witnessed ~17% CPU utilization for
ksmd.
Nominating for Maverick.
--
Lucid qemu-kvm: ksmd default config is CPU hog
https://bugs.laun
As stated above, I personally don't plan on fixing it in Ubuntu.
You can set that value to whatever you want in the config file.
Dustin
--
Lucid qemu-kvm: ksmd default config is CPU hog
https://bugs.launchpad.net/bugs/578930
You received this bug notification because you are a member of Ubuntu
Is this going to be fixed?
--
Lucid qemu-kvm: ksmd default config is CPU hog
https://bugs.launchpad.net/bugs/578930
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
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ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.u
I don't think "Won't Fix" is appropriate. If you look at at
"kernel/Documentation/vm/ksm.txt" you find that the values for
"pages_to_scan" and "sleep_millisecs" are documentated as "chosen for
demonstration purposes".
So "upstream" obviously does not consider these values appropriate for
normal op
See also https://bugzilla.redhat.com/show_bug.cgi?id=541230
** Bug watch added: Red Hat Bugzilla #541230
https://bugzilla.redhat.com/show_bug.cgi?id=541230
--
Lucid qemu-kvm: ksmd default config is CPU hog
https://bugs.launchpad.net/bugs/578930
You received this bug notification because you a
Hi there-
You can actually set it to whatever you want, and have it persist across
boots. Just modify the values in the file /etc/default/qemu-kvm.
We're just using the default, upstream kernel value for
SLEEP_MILLISECONDS, which is 20. It does seem a bit aggressive, but
it's the upstream defau
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