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Transactions Per Second


Transactions Per Second

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growl
growl
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Hi I'm doing some performance monitoring and was wondering if someone could shed some light on this counter? In particular what is considered low and what is considered high?
Or what is the maximum sql server can handle?

Thanks



Steve Jones
Steve Jones
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low and high depend on your system. I've had 11k/sec for some systems that maxed the server and 100/sec for other systems.

Steve Jones
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growl
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Does the transaction per second refer to kb or number of transactions?

If it's number then what counter do use to see the size in kb?



colin.Leversuch-Roberts
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it's number of transactions .. to see throughput you'd really need to measure pages/sec or throughput on the disk system in read and write bytes/sec

The GrumpyOldDBA
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doc_sewell
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Yes, it is relative. Steve, do you know of any TSQL commands to get the TPS?
Steve Jones
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Yep.

SELECT cntr_value, *
FROM sys.dm_os_performance_counters
WHERE counter_name = 'transactions/sec'
AND OBJECT_NAME = 'SQLServerBigGrinatabases'
AND instance_name = 'AdventureWorks'



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I see, you still have to run counters. But our clients often refuse to do that. Is there any other query that can yield TPS without running counters?
Steve Jones
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Not that I know of. The counters have to be captured somehow. If clients don't want to do that, then I guess there's nothing to be done.

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DinaDBA
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Hi Steve,

Do you know how to measure the max of a given server - (instead of finding out the hard way)? So that the TPS is less relative and more interpretive?

I just measured various databases for a test server I set up and they range between TPS of 1 million and zero. Oddly msdb has 1,160,005 which seems incredibly large. I am trying to figure out what to make of these numbers. Thank you!

Edited:
I believe I found my own answer: The entire script is here: http://stackoverflow.com/questions/5019593/sql-server-2008-transaction-per-second-for-specific-database
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