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Re: Session Data Unit and tcp.nodelay

From: Anjo Kolk <anjo_at_oraperf.com>
Date: Fri, 11 Oct 2002 13:08:40 -0800
Message-ID: <F001.004E74B9.20021011130840@fatcity.com>

Yes,

Please do so ! Later versions of Oracle have this already enabled by default I believe. Depending on the delay, the savings/improvements can be great ! First set tcp.nodelay = true, then worry about the SDU/TDU settings. The thing to remember here is that the server and the client need to have the same setting (like with tcp.nodelay). SDU/TDU can be set to 4K as a good start.

Anjo.

On Friday 11 October 2002 22:05, you wrote:
> We have third party CAD application called VPM which
> we are using to organize 3d engineering models. It
> uses an Oracle database to store some information on
> locations of models and relationships between parts.
> We are having some performance problems which seem to
> point to the database access. With sql tracing turned on,
> we determined that one of the operations in question
> used more than 1700 sql statements.
>
> The consultant we work with is suggesting that we try to
> improve the Net8 throughput either by seting tcp.nodelay
> or by adjusting the size of the Session Data Unit. A quick look
> at the Net8 manual suggests that both of these could potentially
> improve throughput by forcing packets to be sent out sooner
> instead of blocking several requests/responses together.
>
> Does anyone have any experience with these settings?
>
> Any suggestions as to what settings to try as a start?
>
> Thanks,
> Peter Schauss
> Northrop Grumman Corporation
> schaupe_at_mail.northgrum.com

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Anjo Kolk
http://www.oraperf.com


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Received on Fri Oct 11 2002 - 16:08:40 CDT

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