search for: tcp_tw_reus

Anyone have experience with these kernel parameters? I can't find a whole lot of info on them. I have a situation where I'm trying to stress test a server, dual proc quad core with a tomcat application that is really fast. We can get it to about 60% CPU usage, and processing about 1,350 requests a second but we can't get much past that. It seems we are maxing out the sockets on the

...ulimit, the max number of open files. Once we reach about 25k connections, we're getting the error above... for all local addresses. It seems as if the system cannot create any more outgoing connections. We already optimized: ---- snip ---- net.ipv4.tcp_fin_timeout=5 # down from 30s net.ipv4.tcp_tw_reuse=1 net.ipv4.tcp_tw_recycle=1 # http://redis4you.com/articles.php?id=012&name=Redis+high+traffic+connection+issue net.ipv4.ip_local_port_range=10000 65000 # http://www.fromdual.com/huge-amount-of-time-wait-connections net.ipv4.netfilter.ip_conntrack_max=524288 ---- snip ---- But still we get...

Hi, I''m serving the puppetmaster application with its config.ru through unicorn - proxied by nginx. I''m using unix sockets, 4 workers, and 2048 backlog. The clients - after their typical "puppet run" - send back a report to the master in YAML. Some clients whose reports tend to be large (close to 2mb) get a 502 bad gateway error and error out. nginx log: 2010/10/22

...he read-rate is about 80%. - The filesystem was online extended 2 times after initial setup. - sysctl.conf parameters are set (for the webserver): -- net.ipv4.ip_nonlocal_bind=1 net.ipv4.tcp_fin_timeout=10 net.ipv4.ip_local_port_range=1024 65535 vm.swappiness=10 net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 -- Now, the problem: The cluster runs well, but some times a day the systemload grows up from ~0-1 to 40, 500, 2000! CPU is fine, no problems. RAM is free, no problems. "ps -e -o pid,stat,comm,wchan=WIDE-WCHAN-COLUMN | grep D" shows me some apache process...

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=40 laforge@netfilter.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED ------- Additional Comments From laforge@netfilter.org 2003-02-03 16:49 ------- We haven't seen this