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"Warning Message"

2 posts in Windows NT Last posting was on 2001-03-12 11:21:29.0Z
Ray W Posted on 2001-03-09 16:19:37.0Z
From: "Ray W" <rw_ebox@yahoo.com>
Subject: "Warning Message"
Date: Fri, 9 Mar 2001 11:19:37 -0500
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Article PK: 1088620

Hi,

In the error log file, I got the following warning message:

:00000:00000:2001/03/03 12:17:28.95 kernel *** WARNING ******************
00:00000:00000:2001/03/03 12:17:28.95 kernel Operating system may favor the
system cache
when memory is at a premium.
To disable this warning, set the registry parameter 'LargeSystemCache' to 0
in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session
Manager\Memory Management.

I do not know what is the matter? Please help!

Ray

March 9


Tony Imbierski Posted on 2001-03-12 11:21:29.0Z
Message-ID: <3AACB139.90AA48AA@sybase.com>
Date: Mon, 12 Mar 2001 11:21:29 +0000
From: Tony Imbierski <tonyi@sybase.com>
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Subject: Re: "Warning Message"
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Article PK: 1088609

I think whoever put that message in probably went a bit over the top with the
***WARNING**** but at least it got your attention.

What it means is that NT is set up to give its own system file cache priority
over memory allocation. If there is loads of free memory then this means
nothing. BUT it means that if free memory runs low (or the system cache needs
more) then NT will start trimming memory away from running processes, including
ASE, while maintaining its own file cache. For typical NT use this is probably
an advantage, but if the main thing you are running on the box is ASE, then it
means the memory will be wasted as ASE does not use the file system cache.

If you set the registry key as indicated then NT gives more memory to ASE and
less to its own cache. It's a tuning thing.

cheers,
tonyi

Ray W wrote:

> Hi,
>
> In the error log file, I got the following warning message:
>
> :00000:00000:2001/03/03 12:17:28.95 kernel *** WARNING ******************
> 00:00000:00000:2001/03/03 12:17:28.95 kernel Operating system may favor the
> system cache
> when memory is at a premium.
> To disable this warning, set the registry parameter 'LargeSystemCache' to 0
> in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session
> Manager\Memory Management.
>
> I do not know what is the matter? Please help!
>
> Ray
>
> March 9

--
Tony Imbierski
Sybase Engineering