benchmark tcp: ab or iperf like tool to send hex/binary/pcap data?

Posted by olan on Server Fault See other posts from Server Fault or by olan
Published on 2010-05-07T10:33:11Z Indexed on 2010/05/07 10:39 UTC
Read the original article Hit count: 365

Filed under:

tcp

|

iperf

|

benchmarking

Hello all,

I have written a server in Twisted for a current project I'm working on, and now I need to test it. It receives TCP packets, with the payload consisting of just a serialised binary string. I want to be able to test the server for concurrency/throughput using the binary data as the payload, but can not find any tool that will allow me to do this. I tried iperf -F but it didn't work, as I think it was sending the binary/hex data as chars. I've also looked at ab which seems to be perfect - if only for http. As well as these, I've had a look at tcpreplay, but it doesn't perform any testing (or establish TCP connections) so it's not much use.

Any help would be greatly appreciated as I'm rather stuck on this one!

© Server Fault or respective owner

Related posts about tcp

TCP RST Reset Every 5 Minutes on Windows 2003 sp2

as seen on Server Fault - Search for 'Server Fault'
Hey, Recently I had a web developer come to me and ask why he was receiving connection errors in his app that was accessing a sql database. So, I went through my normal trouble shooting steps to isolate or reproduce the issue. I discovered that if I connected to the database using Query Analyzer… >>> More
iptables issue on plesk

as seen on Server Fault - Search for 'Server Fault'
i don't know how to open a specific port (rtmp=1935) on my CentOS server using Plesk or itables. I created new rules for port 1935 i/o using Plesk/Modules/Firewall but this doesn't work. Nmap scanning tells me this : 1935/tcp filtered rtmp . So i decided to have look at my iptable using SSH (iptables… >>> More
Httpd problem, suspect an attack but not sure

as seen on Server Fault - Search for 'Server Fault'
On one of my servers when I type netstat -n I get a huge output, something like 400 entries for httpd. The bandwidth on the server isn't high, so I'm confused as to what's causing it. I'm suspecting an attack, but not sure. Intermittently, the web server will stop responding. When this happens… >>> More
Why can blocked IPs get through my iptables? What's wrong with this configuration?

as seen on Server Fault - Search for 'Server Fault'
(Why can/How are) blocked IPs (get/getting) through my iptables? Hello and thanks for your consideration... I have configured iptables and included (below) output from the command "iptables --line-numbers -n -L" yet IP addresses (like 31.41.219.180) from IP blocks I have already blocked are getting… >>> More
iptables syn flood countermeasure

as seen on Server Fault - Search for 'Server Fault'
I'm trying to adjust my iptables firewall to increase the security of my server, and I found something a bit problematic here : I have to set INPUT policy to ACCEPT and, in addition, to have a rule saying iptables -I INPUT -i eth0 -j ACCEPT. Here comes my script (launched manually for tests) : #… >>> More

Related posts about iperf

Different versions of iperf for windows give totally different results

as seen on Server Fault - Search for 'Server Fault'
Measuring TCP output from a Windows client to Solaris server: WXP SP3 with iperf 1.7.0 -- returns an average around 90Mbit Same client, same server but iperf 2.0.5 for windows -- returns an average of 8.5 Mbit Similar discrepancies have been observed connecting to other servers (W2008, W2003) It's… >>> More
Pre-compiled Iperf 2.x binary for win32?

as seen on Server Fault - Search for 'Server Fault'
I'd like to do some network testing on Windows using Iperf. The latest on sourceforge appears to be 2.0.4. However, it's only available as source to be compiled. I attempted to do some google searching for a pre-compiled version, but all I could find were some links to 1.x stuff. Admittedly, the… >>> More
Packet loss rate with iperf and tcpdump

as seen on Server Fault - Search for 'Server Fault'
I tested a line for its link quality with iperf. The measured speed (UDP port 9005) was 96Mbps, which is fine, because both servers are connected with 100Mbps to the internet. On the other hand the datagram loss rate was shown to be 3.3-3.7%, which I found a little too much. Using a high-speed transfer… >>> More
How does iperf calculate throughput and jitter?

as seen on Server Fault - Search for 'Server Fault'
I've read that iperf basically tries to send as much information down a connection as quickly as possible reporting on the throughput achieved. This tool is especially useful in determining the volume of data that links between two machines can supply. is it possible to gather the same results by… >>> More
How to send DSCP-marked packets using iperf?

as seen on Stack Overflow - Search for 'Stack Overflow'
How to send DSCP-marked packets using iperf? I did not find the option in 1.7.0 version on Windows. Are there any newer versions of iperf for Windows? >>> More