Hi fatcharly, Did you do some tunning performance in your operative system?

Maybe this parameters could help you:

Write this parameters in your /etc/sysctl.conf

fs.file-max = 100000
net.ipv4.tcp_max_tw_buckets = 100000
net.ipv4.tcp_low_latency = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_keepalive_time = 512
net.ipv4.tcp_fin_timeout = 5
net.ipv4.inet_peer_maxttl = 5
net.core.rmem_max = 262143
net.core.rmem_default = 262143
net.ipv4.tcp_keepalive_intvl = 15
net.core.netdev_max_backlog = 3000
net.core.somaxconn = 3000
net.ipv4.tcp_keepalive_probes = 5

After, execute sysctl -p and restart your pound service. Repeat your test
and tell us.

This TCP/IP tunning help  to use less operative system resources and work
like a charm  for us!

I'm very interested on read your feedback

Regards!


2012/2/8 Joe Gooch <[email protected]>

> Kemp is purpose built, so I'd expect they've spent a lot of time with
> custom performance tuning.  Plus micro-benchmarks never really tell the
> full story.
>
> For the numbers to mean anything you'd need to provide
> 1) Is this SSL or non-SSL traffic?
> 2) How many of these clicks are SSL handshakes - versus sessions that are
> already established? SSL Handshakes are where the bulk of the CPU load will
> come from.
> 3) Are these clicks new TCP sessions or are they on a shared
> connection(i.e. HTTP Keepalive)
>
> Recommendations for increasing your number:
> 1) Apply this patch:
> http://goochfriend.org/pound/pound_2.6_SNI_Optimization.patch to prevent
> some possibly unneeded SNI checks in SSL handshakes
> 2) Investigate and change your Threads value.  The default of 128 may be
> your limiting factor.  Experiment with more or fewer threads to determine
> the best trade-off of performance and memory.
>
>
> I would bet increasing the Threads value will help in some regard... Let
> me know how it goes please!
>
> Joe
>
> > -----Original Message-----
> > From: [email protected] [mailto:[email protected]]
> > Sent: Wednesday, February 08, 2012 12:02 PM
> > To: [email protected]
> > Subject: [Pound Mailing List] strange performance
> >
> > Hi,
> >
> > we are running a pound 2.6f with a patch v2 by Joe Gooch.
> > When we start to stress our webserver via pound we get ~170000 clicks,
> > while the cpu of our pound-system /Xeon 3,0 GHz 1Gb RAM stays at about
> > 40-50% (top). With the same test-setup but with a different SSL-
> > Loadbalancer (KEMP), we get ~250000 clicks. It seems as if there is a
> > barrier we can“t brake to get more clicks via the pound. Not the pound
> > or the webservers seems to operate with a high load.
> >
> > Any suggestions are welcome
> >
> > Kind Regards
> >
> > fatcharly
> >
> > --
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>



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