Re: Registry Key Replication Kills Performance
From: ebferro (ebferro_at_discussions.microsoft.com)
Date: 01/07/05
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Date: Fri, 7 Jan 2005 05:35:02 -0800
Shon:
Thanks for your response. How do I specify keys below the root on HKLM in
the wizard?
TIA
Ernie
"Shon Shah [MSFT]" wrote:
> Ernie,
>
> If you have specified HKLM\Software for registry replication then I think
> that is the root cause for the issue you are facing. You should only specify
> those keys which are used by your service (service documentation or vendor
> should be able to get you this information). I am sure there are hundreds of
> keys under HKLM\Software which your service does not care about, so why ask
> clustering software to watch those to ensure that updates to those are
> replicated to other node when the resource moves to that node. KB 174070 has
> some details regarding how registry replication works.
>
> Hope this helps.
>
> --
> Regards,
> Shon Shah
> Software Design Engineer/Test
> Microsoft Cluster Server
>
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> "ebferro" <ebferro@discussions.microsoft.com> wrote in message
> news:EB7614B5-A419-4EC2-BFBA-64E0AF1D2C9C@microsoft.com...
> > I've got two services that I've installed as Generic Services using
> > cluster
> > administrator. In order to get the services to work, I had to specify
> > registry key replication. As soon as I do this, the performance of the
> > server (a dual 3.06gig Xeon Dell) becomes terrible. There is a noticeable
> > lag when you click on a menu item before that item actually displays.
> > These
> > services are for a database that's on the cluster. Whenever a client
> > machine
> > goes to access that database, there is a noticable lag. Performance
> > improves
> > for a period of time and then the lag comes back. It's almost as if the
> > cluster is off duplicating the registry key and it completes that task and
> > the performance returns. I'm not sure about this, just supposing. I've
> > two
> > questions, assuming my supposition is correct, is there a way to reduce
> > the
> > frequency of replication so as to reduce the frequency of the lag? In
> > lieu
> > of that solution, is it possible to replicate HKLM/Software/Service name
> > rather than HKLM/Software?
> > By the way, the CPU usage is running between 35 and 40% with taskmanager
> > displayed on node that's hosting these two services. I'm running an
> > active/active cluster and the CPU usage on the node that is not currently
> > hosting these services is about the same but there is no performance lag.
> > So, can someone help me with this issue?
> > Thanks in advance.
> > Ernie
>
>
>
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