Solved

ESXi and SFU 3.5

Posted on 2009-04-15
11
485 Views
Last Modified: 2013-12-19
We are running a Windows 2003 Standard server as a vm using VMware ESXi.  This server is running service for unix 3.5.  We have 2 NFS shares setup on the Windows server which exports to 2 other Unix servers.  The VM is setup using 4GBs of ram and 4 processor running at 2.4Ghz a piece.  We are noticing high CPU utiliaztion with the rpcxdr.sys driver which is used primarliy for SFU.  CPU will spike to over 90% and users notice slowness accessing server.  Is there anything I can do to decrease the overhead used by SFU and is there any known problems using SFU with VMWare ESXi?  Any ideas would be very helpful.  Thanks  
0
Comment
Question by:isgrot
  • 6
  • 5
11 Comments
 
LVL 61

Expert Comment

by:gheist
ID: 24149224
It is DNS server timeout - quite popular in common AD scenarios.
All the "transparent" "background" DNS synchronisations causes that.
I would suggest running NFS on Linux or BSD as it is intended to be.
0
 

Author Comment

by:isgrot
ID: 24149368
Unfortuanaltly, this is the setup we have and need to stick with for the time being.  Are you saying DNS lookups cause the CPU to spike?  Are there any work arounds to this problem?
0
 
LVL 61

Expert Comment

by:gheist
ID: 24149600
DNS cache in front of AD DNS server, running BIND on Linux (mandriva or ubuntu for easy setup in ESXi)
0
 

Author Comment

by:isgrot
ID: 24149673
So you think I should setup a Linux VM to NFS to Unix servers and have Windows pull files from there?
0
 
LVL 61

Expert Comment

by:gheist
ID: 24149761
You have to install DNS cache to cover AD DNS defect (or make DNS and Users synchronize nightly)
Basically Windows NFS is not getting machine name from IP and polls connection eating out CPU time.
0
Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

 

Author Comment

by:isgrot
ID: 24149792
What if I setup mounts in Unix to connect directly to IP and not hostname?
0
 
LVL 61

Expert Comment

by:gheist
ID: 24149904
It queries for name of client IP.
It is really minimal Linux installation, which saves the day when you reboot or break AD controller(s)
0
 

Author Comment

by:isgrot
ID: 24150459
This setup is just not visable for our network.  We are limited to what we can setup due to secuirty issues.  Are there any tweaks that can be made with SFU to reduce the amount of overhead it uses?  
0
 
LVL 61

Expert Comment

by:gheist
ID: 24150530
NO, no tweaks, maybe "Microsoft Update" knows better.
I cannot promise this is solution: http://www.microsoft.com/downloads/details.aspx?FamilyId=70ae23c2-3ae8-4ea6-ba8d-8ac7e4f82663&displaylang=en

You can actually install DNS service on host to cache AD DNS records.
0
 

Author Comment

by:isgrot
ID: 24150850
"You can actually install DNS service on host to cache AD DNS records."

This is interesting idea.  So I would install DNS on my Windows VM and set it to cache records?  How do you setup a DNS server to just cache for that host?  This cannot run full DNS becuase it will violate security policy here.  I know I sound like a broken record but we have to be careful what we install here.
0
 
LVL 61

Accepted Solution

by:
gheist earned 500 total points
ID: 24150900
Ask your security policemen to elaborate...
You just have to run DNS service with forwarders being AD masters...
0

Featured Post

Why do Marketing keep bothering you?

Is your marketing department constantly asking for new email signature updates? Are they requesting a different design for every department? Do they need yet another banner added? Don’t let it get you down! There is an easy way to manage all of these requests...

Join & Write a Comment

It Is not possible to enable LLDP in vSwitch(at least is not supported by VMware), so in this article we will enable this, and also go trough how to enabled CDP and how to get this information in vSwitches and also in vDS.
HOW TO: Install and Configure VMware vSphere Hypervisor 6.5 (ESXi 6.5), Step by Step Tutorial with screenshots. From Download, Checking Media, to Completed Installation.
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…
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

708 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

18 Experts available now in Live!

Get 1:1 Help Now