[dba-VB] Pushing the Limits of Windows: Virtual Memory - Mark's Blog - Site Home - TechNet Blogs

jwcolby jwcolby at colbyconsulting.com
Fri Mar 23 09:56:10 CDT 2012


This blog article seems to indicate that it is best to just let Windows have its paging file and be 
done with it.  It also seems to indicate that no page file can cause the system to lock up entirely 
in some instances.

Personally I am doing "better safe than sorry".  I see nothing that indicates that not having a page 
file increases performance and not having one can cause issues in certain scenarios.  Since disk is 
cheap, why take the chance.  That is my thought.  BTW I went looking for this exactly because I have 
servers with 64 gigs of RAM.  At that level the size of the page file can get large.  Still, better 
safe than sorry.  I just let Windows manage it and place it on a drive with plenty of room.

John W. Colby
Colby Consulting

Reality is what refuses to go away
when you do not believe in it

On 3/23/2012 10:33 AM, Mark Breen wrote:
> Hello John,
>
> Glad that I am not the only one that thinks it is data intensive.
>
> What about turning it off completely?
>
> In my case, I have so much spare ram I could increase performance by simply
> turning off paging.  Is there a downside when I have 9 GB's ram free?  Is
> it silly to be using a page file when the ram is free.  Or maybe windows is
> clever enough to not use the page file at all if the is empty ram ?
>
> Thanks
>
> Mark
>
>
>
>
> On 23 March 2012 12:30, jwcolby<jwcolby at colbyconsulting.com>  wrote:
>
>>> Still not really sure what is best.
>>
>> LOL.  And this article while very detailed only makes the situation more
>> complicated.
>>
>>> What do you do?
>>
>> Basically the 1.5 times rule seems to encompass (be bigger than) what this
>> article prescribes, though the blog is so data intensive that it is tough
>> to really get a handle on it.
>>
>> I just use the 1.5 times rule.  In fact I use "system managed" on a drive
>> that will always have enough room to contain a page file of that size.
>>
>>
>>
>>
>> John W. Colby
>> Colby Consulting
>>
>> Reality is what refuses to go away
>> when you do not believe in it
>>
>> On 3/23/2012 6:41 AM, Mark Breen wrote:
>>
>>> Hi John,
>>>
>>> very interesting.
>>>
>>> I looked my PC today and I am using 2.7 GB out of 12 GB.  Page file is 12
>>> GB.  No page file for Drive D where I hold my data.
>>>
>>> Should I allow windows to manage the page file ?
>>> Should I turn off paging ?
>>>
>>> Still not really sure what is best.
>>>
>>> What do you do?
>>>
>>> Mark
>>>
>>>
>>> On 20 March 2012 12:02, jwcolby<jwcolby@**colbyconsulting.com<jwcolby at colbyconsulting.com>>
>>>   wrote:
>>>
>>>   Just something I ran across.
>>>>
>>>> --
>>>> John W. Colby
>>>> Colby Consulting
>>>>
>>>> Reality is what refuses to go away
>>>> when you do not believe in it
>>>> http://blogs.technet.com/b/****markrussinovich/archive/2008/****<http://blogs.technet.com/b/**markrussinovich/archive/2008/**>
>>>> 11/17/3155406.aspx<http://**blogs.technet.com/b/**
>>>> markrussinovich/archive/2008/**11/17/3155406.aspx<http://blogs.technet.com/b/markrussinovich/archive/2008/11/17/3155406.aspx>
>>>>>
>>>>
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>>>>>
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>>>>>
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>>>>
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