SUMMARY : Sun Network Cache and Accelerator (SNCA)

Hi,

Got SNCA working in five minutes of reading this post. :) Anyway, does
anyone have any performance statistics, with and without SNCA?

Siddhartha

----- Original Message -----
From: "Farzad Hejazi" <FHejazi@cdnow.com>
To: <sunmanagers@sunmanagers.org>
Sent: Thursday, June 14, 2001 11:28 PM
Subject: SUMMARY : Sun Network Cache and Accelerator (SNCA)


> QUESTION:
>
> I'm having a problem configuring the SNCA (Sun Network Cache and
> Accelerator) software as provided with Solaris 8.
> After working with SUN support I was able to resolve a series of problems
> but they were not able to help me in configuring Apache web server to use
> the SNCA module.
>
> I could not find any information anywhere on how to accomplish this.
>
> The official SNCA white paper only points out that the following
statement:
>
> #LD_PRELOAD=/usr/lib/ncad_addr.so web_server
>
> be used before invoking the webserver.
> I tried to include this in the httpd.conf file without any success.
>
> Does any one have any experience getting Apache working with SNCA?
>
> Any advice will be appreciated.
>
> Farzad Hejazi
>
> ANSWER:
>
> The LD_PRELOAD line (without the '#' symbol) has to go into
> the bin/apachectl script shipped with Apache. The Apache 1.3.12
> shipped with Solaris 8 and Sun patch 109234-02 already has
> NCA support in /usr/apache/bin/apachectl.
>
> SNCA could be a nice feature, but documentation is extremely sparse.
> At least beware of the following:
>
> 1. "ndd -get /dev/nca \?" gives you a lot of tuning parameters.
> 2. Set "KeepAlive Off" in httpd.conf (according to Sunsolve FAQ 3220)
>    since NCA handles KeepAlives itself.
>
> Most people gave up on SNCA because of lack of documentation and/or
> performance issues (probably they didn't know about 2.).
>
> HTH,
> Thomas
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