[tproxy] tproxy performance
valmikam at gmail.com
Tue Oct 14 15:15:04 CEST 2008
This is the setup:
There are 3 PCs.
2. A custom TCP proxy based on 2.6.24 + tproxy
All pretty high end machines.
Step A. I send a data packet on already established TCP packet. Size is an
MTU from machine 1.
Step B. Machine 2 receives it and proxies it.
Step C. Machine 3 receives it and echoes it back.
We measure the on-the-wire time in and out of machine (2).
In pure ipforwarding mode on machine 2, we see 2-3 ms latency.
In tproxy mode on machine 2, we see 5-6 ms latency (additional 3ms).
I hope that clarifies the scenario.
Any pointers/help is appreciated.
On Tue, Oct 14, 2008 at 4:49 AM, KOVACS Krisztian <hidden at sch.bme.hu> wrote:
> On h, okt 13, 2008 at 10:28:59 -0400, Ravi Valmikam wrote:
> > Any of you aware of any tproxy performance data? Specifically, any extra
> > latency it adds to packet processing (% is fine).
> > Our testing seems to add significant latency (3ms on base 2-3 ms in non
> > transparent proxy mode). Does it make sense?
> Could you give us a bit more detailed description of what you measured and
> KOVACS Krisztian
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