koit
Contributor
Contributor

Performance problem with DFS replication on ESXi

I'm running a Windows 2003 R2 VM on a Dell 1800 server with one 3GHz CPU and a PERC 4DC RAID controller.

The VM is a Domain Controller and a file server for a small company with about 8 users.

The file server is a member of a DFS replicated namespace, replicating with a second fileserver on a different site.

When someone copies a large (100MB+) file to a DFS replicated share the vCPU of the VM goes to 100% and stays there for a while.

It's the DFSR.exe service causing the CPU load.

When this happens my users are complaining about hang and sluggishness on the file server.

I've tried to disable AntiVirus checking on the "DFSprivate" folder without any luck.

I know I'm running ESXi on unsupported hardware (Dell 1800 and only one pCPU) but it's running only 1 VM with about 5 users connected simultaniously.

Is there any more tunig I can perform on the VM or ESXi to make it better when the DFS replication service is working on incoming and changed files?

Please help me out

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3 Replies
nick_couchman
Immortal
Immortal

Do you have VMware Tools installed?

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koit
Contributor
Contributor

Hi, thanks for your reply

Yes, I'm running ESXi 3.5 update3 and the latest Vmware Tools in the VM.

The VM is not a P2V VM.

I know the disk subsystem has good performance cause I got about 40MB/s transfer speed when I moved the VM from another ESXi host to the host in question.

,

A new message was posted in the thread "Performance problem with DFS replication on ESXi":

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EEsrj
Contributor
Contributor

This may be your problem...

http://support.microsoft.com/kb/925066

Steve Jepson

MCSE,VCP

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