If sess_timeout is set by default to 5 seconds, you could try to set this to 4, 3, 2 or 1 and test if has a better performance... i suposse that set this to 0 will close all connectiond and seems to be an epic fail...
Javier Casares http://javiercasares.com/ 2012/7/9 Steven Engelhardt <[email protected]>: > Just to be clear, would you suggest something like: > 1. Mark the Varnish server as disabled in the BIG-IP > 2. Use varnishadm to set sess_timeout to 0 to start aggressively closing > HTTP requests? > 3. Wait for connections to drain > > Steve > > On Mon, Jul 9, 2012 at 3:59 PM, Javier Casares <[email protected]> wrote: >> >> https://www.varnish-cache.org/docs/3.0/reference/varnishd.html >> >> sess_timeout >> >> Units: seconds >> Default: 5 >> >> Idle timeout for persistent sessions. If a HTTP request has not >> been received in this many seconds, the session is closed. >> >> ¿? >> >> Javier Casares >> http://javiercasares.com/ >> >> >> 2012/7/9 Steven Engelhardt <[email protected]>: >> > I have two Varnish servers behind a F5 BIG-IP load balancer. Both >> > servers >> > are constantly active and serving ~5,000 requests/second 24x7. Clients >> > aggressively use HTTP 1.1 Keep-Alives. >> > >> > I'm looking to develop a process for servicing and upgrading the Varnish >> > servers which results in 0 downtime to the client. Our normal process >> > for >> > performing changes on production servers is: >> > 1. Mark the server as disabled in the BIG-IP >> > 2. Wait for the connections on the server to drop to 0 >> > 3. Service the machine >> > >> > However, because of the aggressive and constant use of HTTP Keep-Alives, >> > clients virtually never drop their connections, and the machine >> > continues to >> > serve traffic for quite a long time after it is disabled in the BIG-IP. >> > >> > Is there a way to tell Varnish to aggressively close all client HTTP >> > connections? >> > >> > Thank you, >> > Steve >> > >> > -- >> > Steven Engelhardt >> > [email protected] >> > >> > _______________________________________________ >> > varnish-misc mailing list >> > [email protected] >> > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc >> >> _______________________________________________ >> varnish-misc mailing list >> [email protected] >> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc > > > > > -- > Steven Engelhardt > [email protected] > > _______________________________________________ > varnish-misc mailing list > [email protected] > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc _______________________________________________ varnish-misc mailing list [email protected] https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc
