esxtop - disk VM (v view) to log

[Alceryes]

I'm trying to capture some info to put in a report. I saved my default view as the 'disk VM' view and am running "esxtop -b -d 2 -n 600 > esxtopcap.csv". I thought that it would just capture my default view but, instead, I'm getting a thousand column csv with a ton of info that I'm NOT looking for.

I really just want it to log the 'disk VM' view. Anyone know how to do this?

TIA!

[dhanarajramesh]

when your using esxtop batch mode everything will be captured. in order to look for your vm disk performance the easiest tool is Windows performance monitoring tool. just I created the steps for you MY SERVER ISSUES: Create performence chart using windows performence monitoring tool ( especially fo...

[Alceryes]

Thx dhanarajramesh!

In Perfmon, do you know what the equivalent to "LAT/rd" is? I can't find it? Ideally I'd like to get a time chart with the info highlighted below.

(This is a spike pictured above. After this spike the numbers did bounce around in the hundreds for several seconds before going back down to 0-20)

[Wh33ly]

What if you look at  'd' (Disk device) and check for the metrics below

GAVG (Guest Average Latency) total latency as seen from vSphere

KAVG (Kernel Average Latency) time an I/O request spent waiting inside the vSphere storage stack.

QAVG (Queue Average latency) time spent waiting in a queue inside the vSphere Storage Stack.

DAVG (Device Average Latency) latency coming from the physical hardware, HBA and Storage device.

This will show you were the latency starts. I think the latency you see from the "V" (Disk VM) view is the total latency from this VM (GAVG)

http://blogs.vmware.com/vsphere/2012/05/troubleshooting-storage-performance-in-vsphere-part-1-the-ba...

[Alceryes]

Thx Wh33ly.

I have done this and the latency that I am seeing on the 'disk VM' view corresponds to the DAVG on the 'disk' view. So, I already know it's somewhere from the driver down. What I need is to tie this into a particular VM which is why I am trying to get info from an esxtop batch run. The data is proving to be a little unwieldy though.

[dhanarajramesh]

LAT= Latency

LAT/rd and LAT/wr columns indicate the average response time of read and write I/O commands seen by the VM. Compare these with DAVG/rd and DAVG/rw. If LAT/rd > DAVG/rd or LAT/rw > DAVG/rw and QUED = 0 than the latency is more than likely cause by the snapshot as DAVG/rd and DAVG/rw is device latency and LAT/rd and LAT/rw is the latency observed by the guest.