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I found an interesting article about the logging timer jobs in SharePoint 2010.

http://msdn.microsoft.com/en-us/library/gg512103.aspx#bk_splog

In this article, it is stating that all the following timer jobs are disabled by default.

Timer jobs:

  • Diagnostic Data Provider: Event Log (Collects Windows Event Log entries and stores the data in the logging database.
    10 minutes)

  • Diagnostic Data Provider: Performance Counters - Database Servers (Collects Performance Monitor Counters data on database servers and stores the data in the logging database. 5 minutes Important: The timer service account must have sufficient permission to collect counters on the database server. The account should be a member of the Performance Monitor Users (PMU) group.)

  • Diagnostic Data Provider: Performance Counters - Web Front Ends (Collects Performance Monitor Counters data on front-end Web servers and stores the data in the logging database.
    5 minutes)

  • Diagnostic Data Provider: SQL Blocking Queries Diagnostic Data (Collects data associated with blocked SQL queries and stores the data in the logging database. 15 seconds)

  • Provider: SQL DMV Diagnostic Data Provider: SQL Memory DMV Diagnostic (Collects SQL Dynamic Management Views (DMV) data and stores the data in the logging database. 30 minutes)

  • Data Provider: Trace Log (Collects Trace Log entries and stores the usage data in the logging database and stores the data in the logging database. 10 minutes)

My question is now: Is it a performance problem to activate all these timer jobs?

Technet: Timer job reference

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A good way to answer this question would be to explain what each of these jobs is for, and what it does when enabled. This would give a better understanding of the performance. –  shufler Dec 3 '11 at 1:11
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1 Answer

Ofcourse any additional logging will increase resource using. Is very hard question will it suitable for you. It depends on your servers logical and phisical topology and hardware.

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