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ASA8 Cache Limit

5 posts in General Discussion Last posting was on 2003-02-11 19:15:22.0Z
Marc S. Fogel Posted on 2003-02-04 15:39:30.0Z
From: "Marc S. Fogel" <msf@removefirst.pmclaw.com>
Subject: ASA8 Cache Limit
Date: Tue, 4 Feb 2003 10:39:30 -0500
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I am running ASA8 on Windows 2K Server. What is my cache size limit?
I have 4gig ram installed. Do I need to run W2K Advanced server to be able
to go over 2Gig Cache size?

Thanks
Marc


Raymond_Kwong Posted on 2003-02-05 04:54:56.0Z
From: Raymond_Kwong
Date: Tue, 4 Feb 2003 23:54:56 -0500
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Subject: Re: ASA8 Cache Limit
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Feel free to take a look at the -cw option in the ASA documentation. It
details specifically what maximum cache sizes each Windows OS can achieve.

In short you can get over 2GB without using the Advanced Server or
Datacenter server -- up to 2.3GB with a regular Windows 2000 Server without
using AWE/PAE. I believe PAE is only supported in Datacenter and Advanced
Servers now, so any cache size beyond 2.3GB would need require the database
server running on Advanced/Datacenter anyway.

Raymond Kwong
iAnywhere Solutions


Marc S. Fogel Posted on 2003-02-11 19:15:22.0Z
From: "Marc S. Fogel" <msf@removefirst.pmclaw.com>
References: <xc1uFZGzCHA.198@forums.sybase.com> <213A3FE04491EB74001B009B85256CC4.005A857585256CC3@webforums>
Subject: Re: ASA8 Cache Limit
Date: Tue, 11 Feb 2003 14:15:22 -0500
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The documentation talks about the 3GB switch on Windows 2000. It is hard to
find reference to that on MS website with regard to Windows 2000. There is
plenty of reference to it when using Advanced or Datacenter.

Has anyone used the 3GB switch on plain old Windows 2000?

<Raymond_Kwong> wrote in message
news:213A3FE04491EB74001B009B85256CC4.005A857585256CC3@webforums...
> Feel free to take a look at the -cw option in the ASA documentation. It
> details specifically what maximum cache sizes each Windows OS can achieve.
>
> In short you can get over 2GB without using the Advanced Server or
> Datacenter server -- up to 2.3GB with a regular Windows 2000 Server
without
> using AWE/PAE. I believe PAE is only supported in Datacenter and Advanced
> Servers now, so any cache size beyond 2.3GB would need require the
database
> server running on Advanced/Datacenter anyway.
>
> Raymond Kwong
> iAnywhere Solutions


John Smirnios Posted on 2003-02-05 16:17:51.0Z
Date: Wed, 05 Feb 2003 11:17:51 -0500
From: John Smirnios <smirnios@sybase.com>
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Subject: Re: ASA8 Cache Limit
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Article PK: 2002

The following change in 8.0.2 may also be relevant (especially the
second paragraph as it pertains to AWE caches):

ASA Bug Fix/Enhancement: QTS 299060 (OTW): Larger standard caches,
smaller AWE caches supported

Fixed In: 8.0.2.4076

Description:

ASA now supports slightly larger standard cache sizes by allowing the
cache to be allocated in up to 4 contiguous pieces where only two were
allowed previously. Some DLLs load at addresses which fragment the
address space and limit the amount of memory that can be allocated with
only two pieces. With this change, perhaps 100MB to 200MB of additional
memory may be allocated for a standard cache, depending on the system.
For AWE caches, this change means that more address space will now be
available for mapping to physical memory which will reduce the number of
mapping operations which must be performed.

Also with this change, the minimum AWE cache size has changed from
(3GB-256MB) to 2MB. It is recommended, however, that a traditional cache
be used if a traditional cache of the desired size can be allocated.
Recall that AWE caches do not support dynamic cache sizing and that AWE
cache page images are locked in memory and therefore they cannot be
swapped out if memory is needed by other processes in the system.

--
John Smirnios
Senior Software Developer
iAnywhere Solutions Engineering

Whitepapers, TechDocs, bug fixes are all available through the iAnywhere
Developer Community at http://www.ianywhere.com/developer

Raymond_Kwong wrote:
> Feel free to take a look at the -cw option in the ASA documentation. It
> details specifically what maximum cache sizes each Windows OS can achieve.
>
> In short you can get over 2GB without using the Advanced Server or
> Datacenter server -- up to 2.3GB with a regular Windows 2000 Server without
> using AWE/PAE. I believe PAE is only supported in Datacenter and Advanced
> Servers now, so any cache size beyond 2.3GB would need require the database
> server running on Advanced/Datacenter anyway.
>
> Raymond Kwong
> iAnywhere Solutions


Joshua Savill Posted on 2003-02-04 16:30:08.0Z
From: "Joshua Savill" <jsavill@sybase.com>
References: <xc1uFZGzCHA.198@forums.sybase.com>
Subject: Re: ASA8 Cache Limit
Date: Tue, 4 Feb 2003 11:30:08 -0500
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Article PK: 2014

Please refer to the Online Books to determine the maximum cache size
depending on your Operating System:

Adaptive Server Anywhere Database Administration Guide
18. Physical Limitations

Size and number limitations

Joshua Savill
iAnywhere Solutions - Technical Support

"Marc S. Fogel" <msf@removefirst.pmclaw.com> wrote in message
news:xc1uFZGzCHA.198@forums.sybase.com...
> I am running ASA8 on Windows 2K Server. What is my cache size limit?
> I have 4gig ram installed. Do I need to run W2K Advanced server to be
able
> to go over 2Gig Cache size?
>
> Thanks
> Marc
>
>