Random Thread - Anything Goes
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So I'm investigating hard drive space issues on all of our servers and I noticed on every single inherited DC (whether it has a good amount of free space or not) the page file is exactly this down to the MB:
That seemed huge to me so I checked the VM's I spun up (Windows Server 2012 R2) and they are:
DC1
DC2
why such a huge disparity?
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Pagefile sizes are dynamic.
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@scottalanmiller based on memory usage, but why is the disoarity so big? All of these are DC's
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@wirestyle22 said in Random Thread - Anything Goes:
So I'm investigating hard drive space issues on all of our servers and I noticed on every single inherited DC (whether it has a good amount of free space or not) the page file is exactly this down to the MB:
That seemed huge to me so I checked the VM's I spun up (Windows Server 2012 R2) and they are:
DC1
DC2
why such a huge disparity?
This is one of the reasons I often check, and anything before Server 2012, I manually set the paging file size to be 1.5x the amount of RAM or 4GB max... Unless you have several thousand user accounts, a DC shouldn't need that much swap space.
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@dafyre said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
So I'm investigating hard drive space issues on all of our servers and I noticed on every single inherited DC (whether it has a good amount of free space or not) the page file is exactly this down to the MB:
That seemed huge to me so I checked the VM's I spun up (Windows Server 2012 R2) and they are:
DC1
DC2
why such a huge disparity?
This is one of the reasons I often check, and anything before Server 2012, I manually set the paging file size to be 1.5x the amount of RAM or 4GB max... Unless you have several thousand user accounts, a DC shouldn't need that much swap space.
So the OS is misjudging the amount of virtual memory required?
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@wirestyle22 said in Random Thread - Anything Goes:
@dafyre said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
So I'm investigating hard drive space issues on all of our servers and I noticed on every single inherited DC (whether it has a good amount of free space or not) the page file is exactly this down to the MB:
That seemed huge to me so I checked the VM's I spun up (Windows Server 2012 R2) and they are:
DC1
DC2
why such a huge disparity?
This is one of the reasons I often check, and anything before Server 2012, I manually set the paging file size to be 1.5x the amount of RAM or 4GB max... Unless you have several thousand user accounts, a DC shouldn't need that much swap space.
So the OS is misjudging the amount of virtual memory required?
How much RAM is actually in your DC?
That is a definite possibility.
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What is your DFS queue size? If that isn't replicating properly you could be hitting your DFS queue max instead of a page file max.
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@wirestyle22 said in Random Thread - Anything Goes:
@dafyre said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
So I'm investigating hard drive space issues on all of our servers and I noticed on every single inherited DC (whether it has a good amount of free space or not) the page file is exactly this down to the MB:
That seemed huge to me so I checked the VM's I spun up (Windows Server 2012 R2) and they are:
DC1
DC2
why such a huge disparity?
This is one of the reasons I often check, and anything before Server 2012, I manually set the paging file size to be 1.5x the amount of RAM or 4GB max... Unless you have several thousand user accounts, a DC shouldn't need that much swap space.
So the OS is misjudging the amount of virtual memory required?
Do you have a reason to believe that?
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@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
@dafyre said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
So I'm investigating hard drive space issues on all of our servers and I noticed on every single inherited DC (whether it has a good amount of free space or not) the page file is exactly this down to the MB:
That seemed huge to me so I checked the VM's I spun up (Windows Server 2012 R2) and they are:
DC1
DC2
why such a huge disparity?
This is one of the reasons I often check, and anything before Server 2012, I manually set the paging file size to be 1.5x the amount of RAM or 4GB max... Unless you have several thousand user accounts, a DC shouldn't need that much swap space.
So the OS is misjudging the amount of virtual memory required?
Do you have a reason to believe that?
It's a Windows Domain Controller... What could cause it to even need a 25GB paging file?
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Heading home. Will follow up.
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@wirestyle22 said in Random Thread - Anything Goes:
Heading home. Will follow up.
If a DC is paging, you have big issues.
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@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
Heading home. Will follow up.
If a DC is paging, you have big issues.
They obviously need a smartphone. #getintothisdecadealready
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@Kelly said in Random Thread - Anything Goes:
What is your DFS queue size? If that isn't replicating properly you could be hitting your DFS queue max instead of a page file max.
Seems to be replicating properly. Nothing is queued currently.
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@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
Heading home. Will follow up.
If a DC is paging, you have big issues.
Yeah but why is it paging? There is such a low % of memory being used and the page file is big.
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@wirestyle22 said in Random Thread - Anything Goes:
@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
Heading home. Will follow up.
If a DC is paging, you have big issues.
Yeah but why is it paging? There is such a low % of memory being used and the page file is big.
The size of the page file doesn't matter. Have you checked the page in / page out rate?
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@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
Heading home. Will follow up.
If a DC is paging, you have big issues.
Yeah but why is it paging? There is such a low % of memory being used and the page file is big.
The size of the page file doesn't matter. Have you checked the page in / page out rate?
I'm not sure how to do that in windows
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@wirestyle22 said in Random Thread - Anything Goes:
@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
@scottalanmiller said in Random Thread - Anything Goes:
@wirestyle22 said in Random Thread - Anything Goes:
Heading home. Will follow up.
If a DC is paging, you have big issues.
Yeah but why is it paging? There is such a low % of memory being used and the page file is big.
The size of the page file doesn't matter. Have you checked the page in / page out rate?
I'm not sure how to do that in windows
Perfmon
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Look for pages/sec and page faults/sec
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@scottalanmiller said in Random Thread - Anything Goes:
What exactly would the charge be for that?
Nuts!
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