I'm using httperf from a large ec2 instance with ubuntu 10.04 (no other software installed).
When I test without --hog the tests run however when I use --hog the tests never end
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3 Answers
I had the same problem but the patch provided in Niro's answer didn't solve the issue for me. The issue ended up being TCP connection reuse and recycling. To fix this I followed instructions found on: http://www.speedguide.net/articles/linux-tweaking-121
The relevant instructions were to run the following commands:
- echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle
- echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse
This is a bug in httperf. found the patch to solve it here:
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applying this patch to 0.9.0 source worked for me on ec2, ubuntu11.10. tcp_tw_reuse & recycle did not make a difference. Linux ip-10-7-203-83 3.0.0-14-virtual #23-Ubuntu SMP Mon Nov 21 21:09:11 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux– spazmOct 24, 2012 at 5:08
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patch applies on current 0.9.1 svn code as well, applying from line 901. Unpatched 0.9.1-svn did not work. Patched 0.9.1-svn did work.– spazmOct 24, 2012 at 5:17
strace httperf which is hunging: mass output bind(1006, {sa_family=AF_INET, sin_port=htons(58815), sin_addr=inet_addr("0.0.0.0")}, 16) = -1 EADDRINUSE (Address already in use)
apply echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse so,can set big num-conns and rate..,and not hung.
thanks
