Re: Default use of caching on raw volumes

2010-09-01 Thread Serge E. Hallyn
Quoting Nikolai K. Bochev (n.boc...@grandstarco.com): > Now the question is - did the ubuntu team do some testing with this ? I don't know about Dustin. I myself haven't really played with the caching options. >From what I see online it definately seems to make a huge difference. For Lucid and M

Re: Default use of caching on raw volumes

2010-09-01 Thread Oliver Brakmann
On 2010-09-01 21:19, Nikolai K. Bochev wrote: > And if testing shows things are ok, would there be any merit in changing > either libvirt or virt-manager to do this by default just for ubuntu ( not > really sure what upstream will do about it ) ? FWIW, I would welcome such a change myself. Add

Default use of caching on raw volumes

2010-09-01 Thread Nikolai K. Bochev
Looks like i'm in a writing mood today, so just bare with me :) A few weeks ago i had problems on one of my kvm hosts with cpu loads. It wasn't very obvious problem, since none of the vm's were having a high cpu usage. Things started to get weird when i upgraded all of the vm's to lucid ( some

Re: landscape-common

2010-09-01 Thread Nikolai K. Bochev
Filed a bug report, we will see how it goes. - Original Message - > On Wed, Sep 1, 2010 at 12:32 PM, Nikolai K. Bochev > > I noticed the same thing, and yes, I agree that that test should scale > linearly with the number of CPUs in the system. ie, the just need to > normalize the load div

Re: landscape-common

2010-09-01 Thread Dustin Kirkland
On Wed, Sep 1, 2010 at 12:32 PM, Nikolai K. Bochev wrote: > Not sure if this is the right place to ask, so i'll just ask and duck. > Since one of the last updates of landscape there was a change that > disallowed displaying of motd stats if the loadavg is above 1. > I could understand this for a d

Re: KSM Control Scripts

2010-09-01 Thread Dustin Kirkland
After changing that variable, you have to: sudo service qemu-kvm restart Also, move it up by orders of 10. Go from 20 to 200 to 2000. -- ubuntu-server mailing list ubuntu-server@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-server More info: https://wiki.ubuntu.com/ServerTe

landscape-common

2010-09-01 Thread Nikolai K. Bochev
Not sure if this is the right place to ask, so i'll just ask and duck. Since one of the last updates of landscape there was a change that disallowed displaying of motd stats if the loadavg is above 1. I could understand this for a desktop, but since the motd is displayed only on servers it make

Re: KSM Control Scripts

2010-09-01 Thread Nikolai K. Bochev
Yes, i know KSM is enabled by default, i just didn't know i can configure it through /etc/default/qemu-kvm . After running the script for around 10 days i didn't notice any huge improvement ( the vm's were already running ). I also didn't notice any increase in CPU usage with KSM_MONITOR_INTERVAL

Re: Change SATA mode to AHCI on installed server

2010-09-01 Thread Ahmed Kamal
On 09/01/2010 02:12 PM, Jorge Andres Brugger wrote: > I want to change SATA mode on a server already installed. Should I take > care of something before make the change at the BIOS setup? > > Thanks. The only thing I'd check is that /etc/fstab mounts using UUIDs and not /dev/sd? names. Other th

Change SATA mode to AHCI on installed server

2010-09-01 Thread Jorge Andres Brugger
I want to change SATA mode on a server already installed. Should I take care of something before make the change at the BIOS setup? Thanks. -- ubuntu-server mailing list ubuntu-server@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-server More info: https://wiki.ubuntu.com/Se