TonyJK
Enthusiast
Enthusiast

VM memory - swapped / ballooned

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Hi,

We are running cluster of ESXi 5.5 Hosts.

This morning, end users report that they find some VMs are slow.  Then we find out there is memory swapped / ballooned for some VMs.

1) Just wonder whether we should get any sign of memory problem (Guest VM) ? 

2) After migrating those VMs to another ESXi Host, the performance is improved.  Just wonder why DRS are not kicked in to migrate those VMs.

Your advice is sought.

Thanks

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linotelera
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Hot Shot

... and what about automation? Is this in fully automated? Try to increase threshold... then check memory/processor availability of the other hosts.

To add more available RAM you should: poweroff or decrease VM memory and/or set a limit in resource pool. Then scale-in or out the cluster (adding physical RAM or adding another host).

Another thing you could to do is set more shares in a resource pool which contains critical VM.

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linotelera
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Hot Shot

Hi... sorry for these simple questions:

What's your DRS automation level and migration thresholds?

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TonyJK
Enthusiast
Enthusiast

DRS is set in the middle (i.e. Apply Priority 1, 2 and 3 recommendations).

In addition to adding more RAM to ESXi Hosts, is there any other thing we can do in the mean time ?  Like: Turn off some VMs / set up Resource Pools ?

Thanks

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linotelera
Hot Shot
Hot Shot

... and what about automation? Is this in fully automated? Try to increase threshold... then check memory/processor availability of the other hosts.

To add more available RAM you should: poweroff or decrease VM memory and/or set a limit in resource pool. Then scale-in or out the cluster (adding physical RAM or adding another host).

Another thing you could to do is set more shares in a resource pool which contains critical VM.

View solution in original post

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