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MrVmware9423
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Performance Metric GAVG is too high

Dear team


one of my VM performing very slow then i have found the datastore where it's vmdk located the GAVG/cmd latency is 600 + , (as suggested by duncan epping the threshold limit is 27), i just want to know if GAVG threshold metric exceed to 600+ then what will be the impact..... (DAVG 500 and KAVG 30+)
need to export only GAVG/cmd metric with the help of esxtop command in batch mode , how to do that ?????.

Regards

Mr Vmware

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mcowger
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It might, but you should check with your array vendor if they support RR.

Also, 600ms response times indicate far more than just path loading problems - you are probably driving to much IO to the disks - you need to check on that.

--Matt VCDX #52 blog.cowger.us

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vmroyale
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Note: Discussion successfully moved from Enterprise Strategy & Planning to Performance & VMmark

Brian Atkinson | vExpert | VMTN Moderator | Author of "VCP5-DCV VMware Certified Professional-Data Center Virtualization on vSphere 5.5 Study Guide: VCP-550" | @vmroyale | http://vmroyale.com
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maishsk
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The impact will be that the guest operating system will not respond because your disks are not providing enough throughput.

Fiber / iSCSI?

Maish

Maish Saidel-Keesing • @maishsk • http://technodrone.blogspot.com • VMTN Moderator • vExpert • Co-author of VMware vSphere Design
MrVmware9423
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u mean to say this problem is related to device/LUN, so how we can resolve the same.

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mcowger
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High GAVG almost always comes from a high DAVG, which means that your storage is responding VERY slowly.  You need ot contact your storage administrtor or tech support to find out why its responding so slowly - usually it means you are overloading it.

--Matt VCDX #52 blog.cowger.us
MrVmware9423
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currently  the path selection policy is selected as MRU, if we change to Round Robin will it help to balance the load????

regards

Mr Vmware

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mcowger
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It might, but you should check with your array vendor if they support RR.

Also, 600ms response times indicate far more than just path loading problems - you are probably driving to much IO to the disks - you need to check on that.

--Matt VCDX #52 blog.cowger.us
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MrVmware9423
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Thanks friends,

just want to know how to export only GAVG metrics data???

regards

Mr Vmware

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maishsk
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Here you go.

Using Batch Mode

Maish

VMTN Moderator | vExpert

Author of VMware vSphere Design

@maishsk | My Blog

Maish Saidel-Keesing • @maishsk • http://technodrone.blogspot.com • VMTN Moderator • vExpert • Co-author of VMware vSphere Design
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