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How to check PTEs; Alert: "The number of free page table entries is low, which can cause system instability"

Posted on 2010-09-23
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Last Modified: 2012-05-10
Microsoft(R) Windows(R) Server 2003, Standard Edition, Service pack 2
running 4 cpus: Intel(R) Xeon(R) CPU 5130 @ 2.00GHz
ram memory: 3GB
and running MS Exchange 2003 Standard
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Im looking at this article that tries to explain what the error is : http://technet.microsoft.com/en-us/library/aa995783%28EXCHG.80%29.aspx

If I understand correctly.... the Exchange Server Analyzer Tool found out that the number of free system PTEs droped below 3,001
According to the article it says "To resolve this problem, you can use the procedure below to configure the SystemPages registry value appropriately for your Exchange Server computer's operating system. When you are running Exchange Server 2003 Service Pack 1 (SP1) on Windows Server 2003 with 1 GB or more of RAM, it is recommended that you set the SystemPages registry key to 0"


the article mentions that "A healthy Exchange Server computer should have at least 5,000 system PTEs available at all times."

so my question is: How to check the amount of PTEs and what is the best way to troubleshoot this issue ?  by just changing that value in the registry to  0, does that stop the annoying message or does it fix the problem?
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Question by:elchermans
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by:elchermans
ID: 33745553
ah.. it says "You can do this by monitoring the Memory | Free System Page Table Entries performance counter with the Windows System Monitor (also known as Performance Monitor). "
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brent_caskey earned 500 total points
ID: 33756735
You probably are using the /3gb switch in your boot.ini file without the /userva=3030 (or lower).

I would recommend that you use /3gb /userva=2900 in your boot.ini file to see if that fixes your low PTE issue.

Here is a good article explaining the correlation between the /3gb switch and Free system PTE's:
http://blogs.technet.com/b/askperf/archive/2007/03/23/memory-management-demystifying-3gb.aspx 
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by:elchermans
ID: 33779863
thanks for the help
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