RE: More performance tweaking and cleanup.
"Francisco Javier Tellez Vaquero" <[email protected]>
| Newsgroups | gmane.comp.voip.nist-sip |
|---|---|
| Message-ID | <[email protected]> |
Hello,
we have repeated the tests in our machine (4 CPU's Sun UltraSparc+ dual-core
at 1,5Ghz = 8CPUs) with this scenario:
SIPP -------------------------> STACK
INVITE ----------->
180 <---------------
200 <---------------
ACK -------------->
BYE -------------->
200 <--------------
and these are the results:
---> 10000 calls with 66cps --> each CPU takes 14%
---> 10000 calls with 150cps --> each CPU takes 55%
---> 10000 calls with 200cps -->each CPU takes 75% (finally performance
decrease)
Best Regards,
Fran.
>From: "M. Rangnathan" <[email protected]>
>To: sip mailing <[email protected]>
>Subject: [nist-sip] More performance tweaking and cleanup.
>Date: Wed, 31 May 2006 14:38:57 -0400
>
>Hello!
>
>I've added some rudimentary rate limiting (someting like a very rudimentary
>RED) to make the stack resillient to flooding attacks. Much more can be
>done here in terms of identifying attack sources, fairness etc. I took a
>gross approach.
>
>I also eliminated some linear searches and got rid of another synchronized
>linked list and elimiated more syncrhonization . I am up to about 69 CAPS
>on my machine. It runs consitently with no leaks over 10,000
>callsetup/teardown. The CPU is running at a fairly decent 70 % (combined)
>and the image is around 110 mb for Shootist. Somebody may want to do a
>"sacalabiltiy with mutiprocessor" experiemnt.
>
>
>Regards,
>
>Ranga.
>
>--
>M. Ranganathan
>
>Advanced Networking Technologies Division,
>National Institute of Standards and Technology (NIST),
>100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899. tel:301 975 3664 ,
>fax:301 590 0932 http://w3.antd.nist.gov/ Advanced Networking Technologies
>For the People!
>
>
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