RE: uptime
Date: Thu, 13 Sep 2012 14:24:38 -0500
Message-ID: <F05D8DF1FB25F44085DB74CB916678E885158F3D66_at_NADCWPMSGCMS10.hca.corpad.net>
With windows you can force the memory back to the system - not sure why it doesn't do this automatically as Linux appears to do.
There's a few tools that I have used for this *however* I'm not sure it would work in the scenario you are describing.
Memory Clean for Windows XP/2003 7/2008 (haven't used this as I haven't a need to on either Windows 7 workstations or Windows 2008 servers. (I believe Windows 2008 uses basically same kernel as Windows 7 - but I may be mistaken on that not having a box to check at the moment)
I used to use FreeRAM XP for old 32-bit Windows Servers running Windows 2003.
Regarding apps, I thought that is what we were talking about :)
I cannot say for certain I've seen a memory leak at the OS level that wasn't reclaimable in some form.
Chris
-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Rich Jesse
Sent: Thursday, September 13, 2012 1:46 PM
To: oracle-l_at_freelists.org
Subject: RE: uptime
Chris writes:
> Define "leaky" ;)
We have one particular 32-bit Win2K3 server that leaks System Page Table Entries (PTEs). This is most likely made much more noticeable by 4GT and PAE, which are both required for this fun slice of heaven. The free PTEs gets too low and apps (crappy MS database-type ones) crash. A reboot is the only fix, suggesting that the leak is system-wide and not app/session/thread-specific.
Not unrelated, see also:
http://blogs.technet.com/b/yongrhee/archive/2010/08/17/list-of-memory-leaks-and-performance-related-hotfixes-post-rtm-for-windows-server-2008-r2.aspx
> Memory leaks - no more so than linux.
I haven't seen that myself. Apps, of course. OS, no. Kill the app, RAM returns. Do you have examples?
That all being said, the 32-bit Win2K3 10.2 XE/APEX box here (used almost exclusively by me) has:
STARTED DAYS
17/01/2012 13:29:49 240
Rich
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