jvm2016
Hot Shot
Hot Shot

drs

Hi Luc,

not a powercli question but if yu could sugesst something.

can you suggest something on the following  hosts memory utilization in cluster .its been there for last two days .one of the hosts is statying at 92 percent .

i changed settings to aggressive to see any improvement happens .canyou suggest any other way of handling this if possible from our end .

pastedImage_0.png

0 Kudos
15 Replies
LucD
Leadership
Leadership

I would try to dig deeper.
Can you check on that specific ESXi node what is consuming CPU?(Check the VM tab and Monitoring - Performance tab for the node)


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

0 Kudos
jvm2016
Hot Shot
Hot Shot

vms on this host will be consuming memory .howeveri found this also .

pastedImage_0.png

0 Kudos
LucD
Leadership
Leadership

When you select that option, does it change the CPU percentage?


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

0 Kudos
jvm2016
Hot Shot
Hot Shot

we are talking about memory utilization .

0 Kudos
LucD
Leadership
Leadership

Yes, I meant memory


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

0 Kudos
jvm2016
Hot Shot
Hot Shot

well i moved one vm manually so it is balnced.not sure why drs not workig as expected.

0 Kudos
LucD
Leadership
Leadership

How did you configure DRS? Fully automated?

Is the threshold conservative or aggressive?

What is the host load standard deviation?


With memory on all your nodes above or around 75% there isn't a lot maneuvering room.


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

0 Kudos
jvm2016
Hot Shot
Hot Shot

fully automated with migration threshold level 3 .

i raised this threshold to 5 being more agressive.

i think host laod standard deviation can be founfthrough esxtop?

yu are right memory on load is around 75 .as i sent in very first post.

0 Kudos
LucD
Leadership
Leadership

You can see the deviation on the Summary page of the cluster in the Web Client.

You have to click the <i> button in newer versions.

deviation.jpg


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

0 Kudos
jvm2016
Hot Shot
Hot Shot

it is imbalanced

target:less than or equal to .026

current:.034

attaching screenshot is not happening .

0 Kudos
jvm2016
Hot Shot
Hot Shot

also migration threshhold is apply all recommendations.

0 Kudos
LucD
Leadership
Leadership

I was afraid it would be something like that.
But DRS doesn't really have a lot of room to play around with in your cluster.


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

0 Kudos
jvm2016
Hot Shot
Hot Shot

well when any host reach 90 percent tool generates alert .i see there was scope to migrate vm to other esxi which i did manually .

0 Kudos
LucD
Leadership
Leadership

But was there a node with sufficient free resources to host that VM at the time of the alarm?
Does the DRS History show any attempts or fails?


Blog: lucd.info  Twitter: @LucD22  Co-author PowerCLI Reference

0 Kudos
jvm2016
Hot Shot
Hot Shot

yes resouce ws avaiable thats why i manully migrated one vm .however iam going to check  drs attempts .

0 Kudos