On Thu, 2005-09-08 at 10:10 -0400, Bob Chiodini wrote: > On Thu, 2005-09-08 at 14:58 +0200, Andreas Storm wrote: > > Hi, > > > > My setup: Fedora Core 2 with 2.6.10-1.771_FC2smp kernel. > > > > I'm currently developing a simulator for load testing > > which needs to handle around 40-50K connections. A mixture of TCP and UDP. > > > > I changed the amount of file descriptors to 64000 > > with ulimit -n 64000 as root. > > > > But when I run and reach around 27000 TCP connections > > my application stops and dmesg writes the following: > > > > "out of socket memory" several times. > > > > I wonder what is the problem and how it can be fixed. Didn't have any luck at the mail archive or google. > > > > Any help appreciated. > > > > Br, > > /Andreas > > > > > > > > Andreas, > > I found the "out of socket memory" in tcp_timer.c. The implication that > the sysctl variable net.ipv4.tcp_max_orphans controls the limit (among > other things). On FC3 this is set to 65536. What is it in FC2? > > Bob... > Andreas, I found an FC2 machine: /sbin/sysctl net.ipv4.tcp_max_orphans net.ipv4.tcp_max_orphans = 16384 You might try bumping that number up. Bob...
