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Problem with CPU Overhead


Problem with CPU Overhead CoSNikO!
6/13/2005 4:13:03 AM
sql server replication: My replication system consists of a Publisher with Windows NT4 w/ SP6a and
SQL Server 7 w/ SP3 and 35 subscribers, with the same windows and sql server
versions, beeing synchronized by a schedule.
When i am trying to synchronize a subscription manually my cpu is running up
to 100%, blocks were being created continiously in table MSmerge_genhistory
and the last executed command that i can see is sp_MSmake_generations.
To solve this problem i must restart sql server service and shift the date
some days back.
Do you have something else?

Re: Problem with CPU Overhead Earl
6/13/2005 10:56:52 PM
You do realize you can throttle back what the cpu is using for SQL Server?

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Re: Problem with CPU Overhead CoSNikO!
6/14/2005 6:09:07 AM
Earl, i tried some ways to solve this problem and i did not found something!
By configuring sql server to use a percentage of cpu power does not solves
this problem. Can you help me some more?

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Re: Problem with CPU Overhead Earl
6/14/2005 8:54:22 AM
This sounds like a Hilary question actually, but I will speculate that this
may be a hardware and / or OS issue. With 35 subscribers merging, that's a
lot of data! With NT4 and SQL7, it sounds like this is an older system, so
I'd also be curious to know what sort of hardware you are running and how
long you have been synchronizing subscribers. You may also want to try
shrinking the database if you have not done that in awhile and / or
truncating the log file (after a backup of course). All this data adds to
churn on the harddrive and cpu (my first instinct tells me that you do not
have enough memory and the system is doing a considerable amount of
pagefiling while working with the data). Finally, I would consider
re-creating the publication anew if you can do that without any other
issues.

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Re: Problem with CPU Overhead CoSNikO!
6/20/2005 1:42:02 AM
Earl I found a bug which makes sp_MSmakegenerations always loop.

I tried to put in comment the paragraph which searches for blank generations
in certain dates, in this stored proc and this works!

Would you like to check it out?

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Re: Problem with CPU Overhead PECDunn
8/10/2005 2:02:04 PM
I would be interested in more information on this bug you mention which
causes the looping.

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