[PVE-User] KSM not working?

Tue Dec 29 15:57:01 CET 2009

So please can you try to debug the init script? Also try to start the daemon manually to test whats wrong (ksmtuned)

- Dietmar

From: Fred Supinski [mailto:fred at vmu.ca]
Sent: Dienstag, 29. Dezember 2009 15:53
To: Dietmar Maurer
Cc: proxmoxve
Subject: Re: [PVE-User] KSM not working?

vm0:/var/log# ls /sys/kernel/mm/ksm/
full_scans  max_kernel_pages  pages_shared  pages_sharing  pages_to_scan  pages_unshared  pages_volatile  run  sleep_millisecs

-Fred

-------- Original Message  --------
Subject: Re: [PVE-User] KSM not working?
From: Dietmar Maurer <dietmar at proxmox.com><mailto:dietmar at proxmox.com>
To: Fred Supinski <fred at vmu.ca><mailto:fred at vmu.ca>, proxmoxve <pve-user at pve.proxmox.com><mailto:pve-user at pve.proxmox.com>
Date: Tue Dec 29 2009 09:46:08 GMT-0500 (Eastern Standard Time)

What is the output of:

# ls /sys/kernel/mm/ksm/

And, yes, "test -x $prox || exit 0" is a bug - will fix it.

- Dietmar

From: Fred Supinski [mailto:fred at vmu.ca]
Sent: Dienstag, 29. Dezember 2009 15:15
To: Dietmar Maurer; proxmoxve
Subject: Re: [PVE-User] KSM not working?

Hi Dietmar,

It doesn't appear to start or give any output at all.

vm0:/var/log# ps aux | grep ksm
root        54  0.0  0.0      0     0 ?        SN   Dec28   0:00 [ksmd]
root     15063  0.0  0.0   3880   640 pts/1    S+   08:32   0:00 grep ksm
vm0:/var/log# /etc/init.d/ksmtuned start
vm0:/var/log# /etc/init.d/ksmtuned status
vm0:/var/log# ps aux | grep ksm
root        54  0.0  0.0      0     0 ?        SN   Dec28   0:00 [ksmd]
root     15069  0.0  0.0   3880   640 pts/1    S+   08:32   0:00 grep ksm
vm0:/var/log#

/etc/init.d/ksmtuned Line 42:
test -x $prox || exit 0

I am guessing this should be:
test -x $prog || exit 0

I'm have skimmed over the reset but nothing is popping out at me.  I have tested with the above change, and it still does nothing.

It doesn't appear to log any failures either.

Thanks again,
-
Fred

-------- Original Message  --------
Subject: Re: [PVE-User] KSM not working?
From: Dietmar Maurer <dietmar at proxmox.com><mailto:dietmar at proxmox.com>
To: Fred Supinski <fred at vmu.ca><mailto:fred at vmu.ca>, pve-user at pve.proxmox.com<mailto:pve-user at pve.proxmox.com> <pve-user at pve.proxmox.com><mailto:pve-user at pve.proxmox.com>
Date: Tue Dec 29 2009 03:23:17 GMT-0500 (Eastern Standard Time)

is the ksm control daemon running ('ksmtuned')?, If not, start with:

# /etc/init.d/ksmtuned start

- Dietmar

From: pve-user-bounces at pve.proxmox.com<mailto:pve-user-bounces at pve.proxmox.com> [mailto:pve-user-bounces at pve.proxmox.com] On Behalf Of Fred Supinski
Sent: Montag, 28. Dezember 2009 22:56
To: pve-user at pve.proxmox.com<mailto:pve-user at pve.proxmox.com>
Subject: Re: [PVE-User] KSM not working?

As an additional note, I am running 8 VMs on this box.  4x Ubuntu 9.10 Server, 3x Windows Server 2003, and 1x Windows XP.

-Fred

Fred Supinski wrote on 12/28/2009 2:31 PM:
Hi Dietmar,

That doesn't appear to be the issue:
vm0:/# free
             total       used       free     shared    buffers     cached
Mem:       8180404    8129008      51396          0      95952    2316360
-/+ buffers/cache:    5716696    2463708
Swap:      7340024    1135688    6204336

Anything else I should try checking out?

Thanks,
-
Fred

-------- Original Message  --------
Subject: Re: [PVE-User] KSM not working?
From: Dietmar Maurer <dietmar at proxmox.com><mailto:dietmar at proxmox.com>
To: Fred Supinski <fred at vmu.ca><mailto:fred at vmu.ca>, proxmoxve <pve-user at pve.proxmox.com><mailto:pve-user at pve.proxmox.com>
Date: Mon Dec 28 2009 14:05:34 GMT-0500 (Eastern Standard Time)

KSM only starts when you use more than half of your physical memory.

- Dietmar

From: pve-user-bounces at pve.proxmox.com<mailto:pve-user-bounces at pve.proxmox.com> [mailto:pve-user-bounces at pve.proxmox.com] On Behalf Of Fred Supinski
Sent: Montag, 28. Dezember 2009 19:00
To: proxmoxve
Subject: [PVE-User] KSM not working?

I have just started testing KSM and it doesn't appear to be working on my server.  ( 0 shared pages )

I have verified that the kernel is configured to boot with the option enabled, and I show the ksmd process running.

vm0:/# pveversion -v
pve-manager: 1.5-1 (pve-manager/1.5/4561)
running kernel: 2.6.32-1-pve
proxmox-ve-2.6.32: 1.5-2
pve-kernel-2.6.32-1-pve: 2.6.32-2
pve-kernel-2.6.24-9-pve: 2.6.24-18
pve-kernel-2.6.24-8-pve: 2.6.24-16
qemu-server: 1.1-10
pve-firmware: 1.0-2
libpve-storage-perl: 1.0-6
vncterm: 0.9-2
vzctl: 3.0.23-1pve3
vzdump: 1.2-5
vzprocps: 2.0.11-1dso2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.11.1-1
ksm-control-daemon: 1.0-1

Any ideas of what I might need to do to get it working?

Thanks,

Fred

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