2.6.35 KSM Kernel - Is it ready for production use?

  • Thread starter Thread starter cchapman
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cchapman

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Has anyone tried this? Is it good enough to move 4 production boxes to it? I realize i need to test but was wondering if anyone else can give me any pointers about upgrading.
 
Has anyone tried this? Is it good enough to move 4 production boxes to it? I realize i need to test but was wondering if anyone else can give me any pointers about upgrading.
Hi,
since this weekend i have two proxmox node with the 2.6.35 in production - the first day is without trouble ;)
The time is too short to say much about it.

Udo
 
Do the VM's feel more responsive with 1.6 KSM?

due to the better io with windows smp guests.

I noticed that I/O 'felt' a little worse now on the 2.6.35 than quite some time ago with the 2.6.32 branch.
It's discussed briefly in this thread.
I don't have records or data from back then to support my 'hunch', so I ran a couple basic tests using the pveperf command to compare the 3 branches.

Results for 2.6.35 & 2.6.32 are posted here.
And for 2.6.18 here.

All that I was able to determine was that 2.6.18 did slightly better with regular expressions, and I/O stayed about the same.

Aside from that there was a NIC firmware issue that was quickly rectified by the devs basically as soon as it was reported- <1 day delay from that, thanks to the PVE team.

My machines aren't running hard yet, so it's still too soon to know for sure.
 
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Looks like you had much better fsyncs/second with 2.6.32 than with 2.6.18 though, or are my eyes failing me...
 

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