Ted,
I can't speak to the differences between kernels, but also I am very interested
in your thread. Our SLES10 and SLES 11 experience has been that even with
VDISK as swap on a VM system that is NOT overcommitted on memory, that any
linux swapping is just kills us with the same sort of
I'm not sure what you would expect VM to be able to do here. All OSes pretty
much suspend operations while this kind of what can I do without
decision-making is going on inside the kernel. If the Linux kernel is taking
it's time sorting out what pages are clean/dirty/pageable, the only thing
With all of the installations (100s) i've worked with using vdisk for
swap, this would be the first complaint i've heard with the exception of
some bad configuration defaults. If you had really good performance
management tools, I'd be happy to look at the data.
On 1/15/2014 5:44 AM, Veencamp,
Message-
From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Barton
Robinson
Sent: Wednesday, January 15, 2014 2:23 PM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: Swap behavior change between SLES 11SP2 and 11SP3?
With all of the installations (100s) i've worked with using vdisk
We've noticed something pretty bothersome for our
environment when we went from SLES 11SP2 to 11SP3. The
penalty for using more virtual memory on a machine than you have
real memory allocated to it has gone up dramatically. Have any
of you seen anything like this?
This has been seen with all
