* brd <barra...@tiscali.it>: > Ralf Hildebrandt wrote: > [...] > > 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 > > just a note on enabling tcp_tw_recycle, it is known to have side-effects > and issues when you have lots of connections from the same source IP, such > as many clients behind same NAT IP or a reverse proxy > > see http://vincent.bernat.im/en/blog/2014-tcp-time-wait-state-linux.html
Yes, we might want to disable that again. -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein