search for: tcp_tw_recycl

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

...f 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 (once the load is rising b...

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

...t samba.org> * BUG 13939: Using Kerberos credentials to print using spoolss doesn't work. o Lukas Slebodnik <lslebodn at fedoraproject.org> * BUG 13998: wafsamba: Use native waf timer. o Rafael David Tinoco <rafaeldtinoco at ubuntu.com> * BUG 13984: ctdb-scripts: Fix tcp_tw_recycle existence check. ####################################### Reporting bugs & Development Discussion ####################################### Please discuss this release on the samba-technical mailing list or by joining the #samba-technical IRC channel on irc.freenode.net. If you do report prob...

...t samba.org> * BUG 13939: Using Kerberos credentials to print using spoolss doesn't work. o Lukas Slebodnik <lslebodn at fedoraproject.org> * BUG 13998: wafsamba: Use native waf timer. o Rafael David Tinoco <rafaeldtinoco at ubuntu.com> * BUG 13984: ctdb-scripts: Fix tcp_tw_recycle existence check. ####################################### Reporting bugs & Development Discussion ####################################### Please discuss this release on the samba-technical mailing list or by joining the #samba-technical IRC channel on irc.freenode.net. If you do report prob...

...- 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 processes with a state of "D&q...

Configuration: (2) Dual Core Opterons 8GB RAM Apache used to balance 40 mongrel instances We receive Application 500 Errors. Nothing suspect appears in the log, so we are at a lost as to what to do next. Any advice would be welcome and/or an explanation of what types of things cause Application 500 Errors in mongrel. Thanks! - Jared Brown -------------- next part -------------- An HTML

...rtin at meltin.net> * BUG 13923: ctdb-tools: Fix ctdb dumpmemory to avoid printing trailing NUL. * BUG 13930: ctdb-daemon: Never use 0 as a client ID. * BUG 13943: ctdb-common: Fix memory leak. o Rafael David Tinoco <rafaeldtinoco at ubuntu.com> * BUG 13984: ctdb-scripts: Fix tcp_tw_recycle existence check. o Ralph Wuerthner <ralph.wuerthner at de.ibm.com> * BUG 13904: Log early startup failures. ####################################### Reporting bugs & Development Discussion ####################################### Please discuss this release on the samba-technical m...

...rtin at meltin.net> * BUG 13923: ctdb-tools: Fix ctdb dumpmemory to avoid printing trailing NUL. * BUG 13930: ctdb-daemon: Never use 0 as a client ID. * BUG 13943: ctdb-common: Fix memory leak. o Rafael David Tinoco <rafaeldtinoco at ubuntu.com> * BUG 13984: ctdb-scripts: Fix tcp_tw_recycle existence check. o Ralph Wuerthner <ralph.wuerthner at de.ibm.com> * BUG 13904: Log early startup failures. ####################################### Reporting bugs & Development Discussion ####################################### Please discuss this release on the samba-technical m...

...low symlinks = no We've tried tuning tcp part with the next things: echo 400000 400000 400000 > /proc/sys/net/ipv4/tcp_mem echo 400000 400000 400000 > /proc/sys/net/ipv4/tcp_rmem echo 400000 400000 400000 > /proc/sys/net/ipv4/tcp_wmem echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle echo 0 > /proc/sys/net/ipv4/tcp_sack echo 8192 > /proc/sys/net/ipv4/tcp_max_syn_backlog echo 500000 > /proc/sys/net/ipv4/tcp_max_tw_buckets echo 0 > /proc/sys/net/ipv4/tcp_timestamps Linux-Linux ftp 251000kbit/s Lin...

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