I've been following this discussion with some interest, not only would
SIP-TLS help with security (SRTP is useless without key handling), but
it seems to improve the amount of calls per second due to TCP being able
to respond more quickly to lost packets.
--
Best regards,
Duane
http://www.cacert.org - Free Security Certificates
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"In the long run the pessimist may be proved right,
but the optimist has a better time on the trip."
--- Begin Message ---
Klaus, first of all thank you for producing some real results we can
discuss. Just to validate some of your results - this is not the
first time I have seen performance results where TLS (or more
specifically TCP) has better performance that UDP. I have seen this
on other products too and when I think about it, it is not that
surprising.
Cullen
On Jul 24, 2006, at 10:59 AM, Klaus Darilion wrote:
Hi!
I made some tests with sipp+openser:
scenario:
UAC <-TLS-> openser <-TLS-> UAS (all of them got its own 2xP3
1,26GHz machine, linked with 100MBit). Simple forwarding
configuration (like a loadbalancer), no DNS lookups or DB queries.
UDP: ~620 cps
TLS: ~680 cps (single TLS connection)
cps=calls per second = INVITE-180-200-OK-ACK-BYE-200
I think TLS performs better as because of UDP retransmissions,
which "kills" the proxy if it becomes slow.
More data when I have it.
regards
klaus
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