Solved

RDS 2008 R2 on Vmware Esxi 5.5 Performance issues High CPU usage

Posted on 2014-10-14
7
786 Views
Last Modified: 2015-01-19
Hi

We have one ESXi 5.5 host running on a HP Proliant ML350 G6 E5520 with two CPU's and 64GB RAM. We are using local storage. 6 x 300GB SAS in RAID5

There are 3 VM's running on this host:
1. SBS2011 - 4vCPU (1 socket, 4 cores), 22GB RAM, VMXNET3
2. Server 2008 R2 (SQL) - 2vCPU, 8GB RAM, 1 NIC
3. Server 2008 R2 (Terminal Server) - 2vCPU (2 sockets, 1 core), 20GB RAM, 2 NIC's (one E1000 and one VMXNET3)

I've just been assigned the task to monitor the performance of the Terminal Server as users are complaining of random freezes.

First thing I noticed is that the CPU usage on the Terminal Server is constantly arround 70% with random peaks to 100%. Checking the cpu usage for the VM in the vshpere client also shows the same high cpu usage with peaks to 100%.
The CPU usage of the host is running an average of 30%

Checking the process tab in Task manager on the Terminal Server shows that the process winword.exe for one user is running at 50%. (Office 2010)

There are +/- 15 simultaneous users on the Terminal Server.

WSRM is running on the terminal server.

I could really use some suggestions in further troubleshooting this issue. I would like to know if the server just isn't up to the task.

Thx.
0
Comment
Question by:FlipTrip
  • 4
  • 2
7 Comments
 
LVL 118

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE)
Andrew Hancock (VMware vExpert / EE MVE) earned 250 total points
ID: 40379375
I would suspect this is normal behaviour for a terminal server with a load of 15 concurrent users.

I would change the E1000 network interface to a VMXNET3 interface. E1000 is a legacy interface.

Have you tried adding any additional vCPUs ?

Otherwise I would consider reducing the load (concurrent users), and deploying another Terminal Server, to spread and reduce the loading.
0
 
LVL 2

Author Comment

by:FlipTrip
ID: 40379509
I just found this document:

using esxtop confirms that the server should be able to handle the load.

There is currently not an option to add an extra hardware. I first need proof that the current hardware isn't sufficient.

Thx
0
 
LVL 78

Expert Comment

by:David Johnson, CD, MVP
ID: 40379617
what are your disk queues like? have you got sufficient disk iops available?
0
How to improve team productivity

Quip adds documents, spreadsheets, and tasklists to your Slack experience
- Elevate ideas to Quip docs
- Share Quip docs in Slack
- Get notified of changes to your docs
- Available on iOS/Android/Desktop/Web
- Online/Offline

 
LVL 118
ID: 40379619
We have seen many issues with Terminal Servers, that have been virtualized, and we have never exceeded 15 concurrent users per virtual server.
0
 
LVL 2

Author Comment

by:FlipTrip
ID: 40379635
I'm not sure how to check the iops.

If I check the queues from the host view i see the following results:
average queue read latency's: 0.322
average queue write latency's: 0.011

which I think is ok.
0
 
LVL 2

Accepted Solution

by:
FlipTrip earned 0 total points
ID: 40550779
Thin Clients are swapped by Fat clients and RDS is now only used for remote access.

I'm suspecting that the bad performance was related to applications that were not really RDS compatible.
0
 
LVL 2

Author Closing Comment

by:FlipTrip
ID: 40557305
Workarround.
0

Featured Post

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

Join & Write a Comment

In this step by step tutorial with screenshots, we will show you HOW TO: Enable SSH Remote Access on a VMware vSphere Hypervisor 6.5 (ESXi 6.5). This is important if you need to enable SSH remote access for additional troubleshooting of the ESXi hos…
In this article, I will show you HOW TO: Install VMware Tools for Windows on a VMware Windows virtual machine on a VMware vSphere Hypervisor 6.5 (ESXi 6.5) Host Server, using the VMware Host Client. The virtual machine has Windows Server 2016 instal…
This tutorial will walk an individual through the process of transferring the five major, necessary Active Directory Roles, commonly referred to as the FSMO roles to another domain controller. Log onto the new domain controller with a user account t…
This Micro Tutorial walks you through using a remote console to access a server and install ESXi 5.1. This example is showing remote access and installation using a Dell server. The hypervisor is the very first component of your virtual infrastructu…

746 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now