Sybase NNTP forums - End Of Life (EOL)

The NNTP forums from Sybase - forums.sybase.com - are now closed.

All new questions should be directed to the appropriate forum at the SAP Community Network (SCN).

Individual products have links to the respective forums on SCN, or you can go to SCN and search for your product in the search box (upper right corner) to find your specific developer center.

working with PAE in Linux

4 posts in General Discussion Last posting was on 2009-01-22 13:13:54.0Z
Ilya Rilichev Posted on 2008-08-27 08:11:26.0Z
Sender: 7665.48b50ae2.1804289383@sybase.com
From: Ilya Rilichev
Newsgroups: ianywhere.public.general
Subject: working with PAE in Linux
X-Mailer: WebNews to Mail Gateway v1.1t
Message-ID: <48b50c2e.76a4.1681692777@sybase.com>
NNTP-Posting-Host: 10.22.241.41
X-Original-NNTP-Posting-Host: 10.22.241.41
Date: 27 Aug 2008 01:11:26 -0700
X-Trace: forums-1-dub 1219824686 10.22.241.41 (27 Aug 2008 01:11:26 -0700)
X-Original-Trace: 27 Aug 2008 01:11:26 -0700, 10.22.241.41
Lines: 3
Path: forums-1-dub!not-for-mail
Xref: forums-1-dub ianywhere.public.general:7060
Article PK: 5281

What ASA versions support AWE cache on the 32-bit Linux with
PAE kernel 2.6.23? It's possible? Machine have 6Gb RAM, but
max ASA cache size is ~2600Mb. It so?


Josh Savill Posted on 2008-08-27 14:14:27.0Z
From: Josh Savill <no_spam_jsavill@ianywhere.com>
Organization: Sybase iAnywhere
User-Agent: Thunderbird 2.0.0.16 (Windows/20080708)
MIME-Version: 1.0
Newsgroups: ianywhere.public.general
Subject: Re: working with PAE in Linux
References: <48b50c2e.76a4.1681692777@sybase.com>
In-Reply-To: <48b50c2e.76a4.1681692777@sybase.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
NNTP-Posting-Host: vip152.sybase.com
X-Original-NNTP-Posting-Host: vip152.sybase.com
Message-ID: <48b56143$1@forums-1-dub>
Date: 27 Aug 2008 07:14:27 -0700
X-Trace: forums-1-dub 1219846467 10.22.241.152 (27 Aug 2008 07:14:27 -0700)
X-Original-Trace: 27 Aug 2008 07:14:27 -0700, vip152.sybase.com
Lines: 21
X-Authenticated-User: techsupp
Path: forums-1-dub!not-for-mail
Xref: forums-1-dub ianywhere.public.general:7061
Article PK: 5282

Ilya,

You find our Linux support outlined here:
http://www.sybase.com/detail?id=1035824#distributions

Supported components:
2.6 Kernel range: 2.6.9 - 2.6.18;
glibc 2.3.4 - 2.3.5, 2.4-31.2, and 2.5

The 2.6.23 Kernel has not been tested.

Full supported platform matrix: http://www.sybase.com/detail?id=1002288

--
Joshua Savill
Sybase iAnywhere - Product Manager

Ilya Rilichev wrote:
> What ASA versions support AWE cache on the 32-bit Linux with
> PAE kernel 2.6.23? It's possible? Machine have 6Gb RAM, but
> max ASA cache size is ~2600Mb. It so?


"Nick Elson" < Posted on 2008-08-27 14:50:32.0Z
From: "Nick Elson" <@@@nick@@@.@@@elson@sybase@@@.@@@com@@@>
Newsgroups: ianywhere.public.general
References: <48b50c2e.76a4.1681692777@sybase.com>
Subject: Re: working with PAE in Linux
Lines: 33
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2900.2869
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962
X-RFC2646: Format=Flowed; Original
NNTP-Posting-Host: vip152.sybase.com
X-Original-NNTP-Posting-Host: vip152.sybase.com
Message-ID: <48b569b8$1@forums-1-dub>
Date: 27 Aug 2008 07:50:32 -0700
X-Trace: forums-1-dub 1219848632 10.22.241.152 (27 Aug 2008 07:50:32 -0700)
X-Original-Trace: 27 Aug 2008 07:50:32 -0700, vip152.sybase.com
X-Authenticated-User: techsupp
Path: forums-1-dub!not-for-mail
Xref: forums-1-dub ianywhere.public.general:7062
Article PK: 5283

The only platform that we support AWE (or any similar technology)
on, is a Windows 32bit platform.

While the 32-bit Linux 2.6 kernel can take advantage of PAE,
on equipment that supports that, that does not automatically
extend the full address space increase to the process level.
Using standard 32bit addressing, a single process can only
access up to 4GB of address space and the OS uses part
of that. With Linux w/PAE the kernel (by default) reserves
1GB of address space for it own purposes, and that restricts
standard binaries to 3GB. In that event, the maximum cache
will be arond 2.6GB [binaries, reserve, dynamic address map,
etc will take up the rest].

On Windows, a 'paging' or 'bank switching' API [AWE]
is required to take advanatage of the full PAE addressing
capabilities and our Win32 server is designed to take
advantage of that.

While there may seem to be AWE-like APIs available with
some distributions of the 2.6 Kernel, we have not written
the server to use any of those. I suspect with the advent of
(almost) universally available 64bit Intel/AMD processors,
it is best to support those *better* and not get distracted
with what may be a short-live phenomena.

<Ilya Rilichev> wrote in message news:48b50c2e.76a4.1681692777@sybase.com...
> What ASA versions support AWE cache on the 32-bit Linux with
> PAE kernel 2.6.23? It's possible? Machine have 6Gb RAM, but
> max ASA cache size is ~2600Mb. It so?


forums.sybase.com Posted on 2009-01-22 13:13:54.0Z
From: "forums.sybase.com" <paperino@libero.it>
Newsgroups: ianywhere.public.general
References: <48b50c2e.76a4.1681692777@sybase.com>
Subject: Re: working with PAE in Linux
Lines: 9
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
X-RFC2646: Format=Flowed; Original
NNTP-Posting-Host: vip152.sybase.com
X-Original-NNTP-Posting-Host: vip152.sybase.com
Message-ID: <49787112$1@forums-1-dub>
Date: 22 Jan 2009 05:13:54 -0800
X-Trace: forums-1-dub 1232630034 10.22.241.152 (22 Jan 2009 05:13:54 -0800)
X-Original-Trace: 22 Jan 2009 05:13:54 -0800, vip152.sybase.com
Path: forums-1-dub!not-for-mail
Xref: forums-1-dub ianywhere.public.general:7314
Article PK: 5524

prova news inviata

<Ilya Rilichev> ha scritto nel messaggio
news:48b50c2e.76a4.1681692777@sybase.com...

> What ASA versions support AWE cache on the 32-bit Linux with
> PAE kernel 2.6.23? It's possible? Machine have 6Gb RAM, but
> max ASA cache size is ~2600Mb. It so?