[netperf-talk] VPN throughput

[Yash Khanduri]

While running the TCP_CRR test through VPN tunnel, I got very inconsistent results as compare to without VPN setup:
Local/Remote Socket Send bytes Local/Remote Socket Receive bytes Request Size bytes Response Size bytes Elapsed Time Seconds Transaction rate per second 
16384 87380 64 64 60 163.68 
16384 87380         
16384 87380 128 128 60 129.88 
16384 87380         
16384 87380 512 512 60 117.46 
16384 87380         
16384 87380 1024 1024 60 105.57 
16384 87380         
16384 87380 1400 1400 60 315.73 
16384 87380         
16384 87380 1500 1500 60 10.64 
16384 87380         
16384 87380 1600 1600 60 292.7 
16384 87380         
16384 87380 1700 1700 60 276.27 
16384 87380         
16384 87380 1800 1800 60 228.78 
16384 87380         
16384 87380 1900 1900 60 40.87 
16384 87380         
16384 87380 2000 2000 60 65.72 
16384 87380         
16384 87380 5000 5000 60 164.9 
16384 87380         
16384 87380 10000 10000 60 104.33 
16384 87380         
 
Please tell me why the Transactions/second values are not showing higher values for short message size and decreasing as the message size is increasing.
 
Regards
Yash
 



----- Original Message ----
From: Rick Jones <rick.jones2 at hp.com>
To: Yash Khanduri <yashkhanduri at ymail.com>
Cc: netperf-talk at netperf.org
Sent: Thursday, August 21, 2008 10:12:39 PM
Subject: Re: [netperf-talk] VPN throughput

Yash Khanduri wrote:
> Hello All,
>  
> I want to check the VPN throughput of particular firewall by using 
> netperf and here is my setup:-
>  
> (Netperf Client side) LAN--------Firewall 
> 1-----------VPN-----------Firewall 2-----------LAN (Netserver side)
>  
> To measure VPN throughput, is it as simple as running the TCP_STREAM, 
> TCP_RR, TCP_CRR, UDP_STREAM and UDP_RR tests from client side to server 
> side.

It can be.  the _STREAM tests will measure throughput.  The _RR tests 
will measure latency.  If you ./configure --enable-burst and set 
suitable settings the _RR tests can also be used to measure 
single-connection bidirectional throughput.

The TCP_CRR test will measure connection setup, single-transaction 
exchange, connection tear-down latency/throughput.

> Also, is there a way to test firewall throughput with services running 
> Spamfilter (SMTP port 25), WebFilter (HTTP port 80) through Netperf?

Netperf simply sends or receives bits.  It does not attempt to interpret 
those bits.  So, while you can configure it to try to talk to any port 
number you like, it cannot actually speak SMTP or HTTP.

rick jones

>  
> Regards
> Yash
> 
> 
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> 
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