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Junior Member
 
Group: Forum Members
Last Login: Sunday, July 20, 2008 4:31 PM
Posts: 20,
Visits: 105
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Hi Team
Post ESX memory tuning info here.
The ESX documentation is a good place to find this reference for newbies to VMware and for other contributors to use as a reference point.
http://pubs.vmware.com/vi301/wwhelp/wwhimpl/js/html/wwhelp.htm
Turn this off for ISCSI Virtual Appliances - You do not want the contents of memory swapped to disk.
Memory Balloon (vmmemctl) Driver
The vmmemctl driver collaborates with the server to reclaim pages that are considered least valuable by the guest operating system. The driver uses a proprietary ballooning technique that provides predictable performance which closely matches the behavior of a native system under similar memory constraints. This technique effectively increases or decreases memory pressure on the guest operating system, causing the guest to invoke its own native memory management algorithms. When memory is tight, the guest operating system decides which particular pages to reclaim and, if necessary, swaps them to its own virtual disk.
If necessary, you can limit the amount of memory vmmemctl reclaims by setting the sched.mem.maxmemctl parameter for a specific virtual machine. This option specifies the maximum amount of memory that can be reclaimed from a virtual machine in megabytes (MB
Reality is defined by the physical universe and your mind - "Its the second one that varies" :-)
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Forum Newbie
Group: Forum Members
Last Login: Wednesday, June 25, 2008 4:11 PM
Posts: 7,
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A few comments about this:
1 VMMEMCTL is installed as part of VMWare tools.
Since LHN builds the VSA - why don't you just NOT install this driver..
Issue resolved.
2 I believe the recommended approach is to do a reservation of 1024 MEM for the VSA
The VMMEMCTL driver will not effect an memory that has been reserved.
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Junior Member
Group: Forum Members
Last Login: Sunday, July 20, 2008 4:31 PM
Posts: 20,
Visits: 105
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Hi Marc
Great Point, this would mean that my posting from Sept 2007 was for the Lefthand Team and they probably already knew.
I was trying to get others to contribute any tips they find, so if you hve any please post
Reality is defined by the physical universe and your mind - "Its the second one that varies" :-)
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