Improve ESXi Performance

[Hojjat]

Hi,

I have an ESXi server in my office with 10 VM. Sometimes VM's performance start to come down and we have very slow speed at that moment. Finally I restart ESXi server to get best performance. What happen on this ESXi server? Can I Improve performance and speed? Can I do this without restarting?

Thanks

[jrmunday]

You need to look at the performance charts and metrics to understand where the bottleneck is that is causing the performance issues.

Start with the obvious first;

• Memory over commitment
  
• Excessive SMP
  
• Disk latency
  
• Network queues and latency
  

Once you understand what this issue is, then you can look at dealing with the problem.

[virtualinstall]

In addition to the above metrics and performance charts you may find esxtop a useful tool: http://www.yellow-bricks.com/esxtop/

[jdptechnc]

Jon Munday wrote:

You need to look at the performance charts and metrics to understand where the bottleneck is that is causing the performance issues.

Start with the obvious first;

• Memory over commitment
  
• Excessive SMP
  
• Disk latency
  
• Network queues and latency
  

Once you understand what this issue is, then you can look at dealing with the problem

Agreed...

To the OP, keep in mind that ESXi isn't like Windows, where you end up needing to reboot regularly to "clean stuff up".  You may be overburdening your ESXi host due to memory or CPU bottleneck, but you will have to look at your performance charts and to get a feel for that.  You might find that one or two of your VMs are causing the issue.