[httperf] Re: Connection rate is very low

Gattegno, Victor (CPR&Q GCC - ISS/SW Tower) victor_gattegno at hp.com
Mon Oct 22 23:54:00 PDT 2012


Hi Vikash


?  What can be done to stoop this message?

You could do this:

# echo 0 > /proc/sys/net/ipv4/tcp_syncookies

Or, if you want it permanent (after reboot), set: net.ipv4.tcp_syncookies = 0 in /etc/sysctl.conf

Rgds,
Victor

From: httperf-bounces at linux.hpl.hp.com [mailto:httperf-bounces at linux.hpl.hp.com] On Behalf Of Vikash Kumar
Sent: lundi 22 octobre 2012 13:58
To: httperf at linux.hpl.hp.com
Subject: [httperf] Re: Connection rate is very low

  I am also getting TCP SYN flooding msg in dmesg of Haproxy host m/c:

  [ 2965.742025] possible SYN flooding on port 80. Sending cookies.

  Command   cat /proc/sys/net/ipv4/tcp_syncookies is set to 1.

   What can be done to stoop this message?

Regards,
Vikash

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