[THIN] Re: Quick PAE question
- From: "Jay P. Moock" <jmoock@xxxxxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Fri, 12 Jan 2007 15:46:56 -0500
But isn't the main purpose of PAE to enable access to memory beyond 4GB,
and then only if the app supports it? The only reference I can find for
using PAE on a 4GB system is to enable hardware enforced Data Execution
Prevention (DEP). I agree about the potential benefits on systems with
more than 4GB, in the scenario your describe, but I question its value
on a 4GB system.
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Malcolm Bruton
Sent: Friday, January 12, 2007 2:53 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Quick PAE question
I agree. Not all that bad. If you have servers being constrained by
memory you can turn this on to help. As Joe said be ware that it takes
memory away form the kernel. i.e. if you have apps with large memory
requirements which dictates a handful of users per server it works well.
If you are looking to boost users numbers and the apps used only use
small amount of memory I doubt you have that much to gain except
squeezing on those last few users. Using this setting may dictate that
you need to do some kernel memory tweaking as well especially in windows
2000.
Brian Madden has an excellent article amount kernel tweaking etc I
think it includes PAE etc but I can't find the link.
And one last thing. Make sure you test it !!!!
Malcolm
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Joe Shonk
Sent: 12 January 2007 18:53
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Quick PAE question
It's not all that bad. It does allow for the unused memory that the
Servers (not just IBM) grab for PCI-X, etc to be remapped. The bad
thing about PAE is it takes away kernel memory space and processing
overhead because the OS now has to create a table, map and track that
memory.
It's a hardware thing, and not really an OS thing. The 3.2 gigs is
what is reported when the system POSTs.
Joe
Other related posts:
