IMHO it would be more efficient to get IBM and Novel to address the
issue and eliminate  VDISK memory creep without having to configure
multiple VDISKS with different priorities.  

If memory constraints can be addressed in z/VM 5.3 with z9's (CMM) why
can't the above issue be resolved ? 

Mark Brandt
>

-----Original Message-----
From: Rob van der Heij [mailto:[EMAIL PROTECTED] 
Sent: Friday, October 12, 2007 8:35 AM
To: LINUX-390@VM.MARIST.EDU
Subject: Re: high water mark for swap space used?

On 10/12/07, Romanowski, John (OFT) <[EMAIL PROTECTED]>
wrote:

> Ok, so the swap behavior is:  look for allocated but reuse-able swap 
> blocks in the full higher/est priority swap partition before starting 
> to allocate from lower priority swap partition?  swap allocation stays

> within the higher priority (but purposely smaller) partitions as long 
> as it finds a free or a reusable block?

Indeed. That's the entire trick: force Linux to use all free space in
the first swap device before using the next one. Note that this is exact
opposite of what "them from the other platforms" use with multiple swap
devices (to spread the load evenly over multiple slow devices).

Rob
--
Rob van der Heij
Velocity Software, Inc
http://velocitysoftware.com/

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