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poor IIS performance on VM

Posted on 2016-10-19
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Last Modified: 2016-10-21
Hi Experts,

we have converted a old server WIN2008 to a VM.
All works but the IIS performance is poor.
The users from outside can connect but very slow and sometimes with interrupts.

Do you have any ideas ?

The VM has 4GB RAM and 8 vCPUs. It is a 32bit system.
We use VMWARE 6.0 with NFS storage on NETAPP.
Before the migration (P2V) the IIS was much more quicker.
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Question by:Eprs_Admin
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6 Comments
 
LVL 119
ID: 41850157
Comparing physical versus virtual servers, is never a good idea, performance will ALWAYS be better on the physical!

But if it causes performance, or service issues, in your case, this is not good for service.

But 8 vCPU sockets could be excessive ?

How many concurrent users access the server?

Why have you decided on 8 vCPUs ?

also how are these vCPUs provisioned, as sockets or cores ?

see this recent Question on EE, I answered

https://www.experts-exchange.com/questions/28976459/Increase-VM-performance.html

also see my EE Article

HOW TO:  Performance Monitor vSphere 4.x or 5.0
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Author Comment

by:Eprs_Admin
ID: 41850392
I changed back to 4 sockets vCpus
Some old services also took performance of one complete core.

Now is better.

I have to wait until tomorrow, when user connect to it.
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LVL 119

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 500 total points
ID: 41850449
*ALWAYS* use sockets!
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Netscaler Common Configuration How To guides

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Assisted Solution

by:Eprs_Admin
Eprs_Admin earned 0 total points
ID: 41853439
OK it is solved now.
Again problems with the nic driver of VMXNET3.

I will change all nic to the E1000 driver !!
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Author Closing Comment

by:Eprs_Admin
ID: 41853460
VMXNET3 driver has problems, when you use webservers and application servers and DB-servers.....
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LVL 119
ID: 41853527
I would qualify that with VMware Support!, before you go crazy and change all over
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Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

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