Yes you could have all different applications in one process/configuration.
When you 'reload' using -sf you'd have 2 processes for a while (depends on if you have long-lived connections or not). The old processes scheduled to die will typically take a lot less CPU, because they are handling only a couple connections and not any new ones. On Mon, Oct 21, 2013 at 1:04 PM, Fred Pedrisa <fredhp...@hotmail.com> wrote: > Hello, > > So, I can run all my instances in just one process and work with it this > way, by using -sf right ? > > -----Mensagem original----- > De: Jeff Zellner [mailto:j...@olark.com] > Enviada em: segunda-feira, 21 de outubro de 2013 14:59 > Para: Fred Pedrisa > Cc: haproxy@formilux.org > Assunto: Re: High CPU Usage (HaProxy) > > -sf will not actually kill the old process(es) immediately. They'll end when > they are no longer handling the currently connected clients they have, but > the new process will handle all new connections. > > On Mon, Oct 21, 2013 at 12:57 PM, Fred Pedrisa <fredhp...@hotmail.com> > wrote: >> Hello, >> >> Are there any parameters that could be touched to potentially help >> with the cpu usage ? >> >> And the -sf parameter, will kill the old one while keeping the new >> one, that's it ? >> >> -----Mensagem original----- >> De: Jeff Zellner [mailto:j...@olark.com] Enviada em: segunda-feira, 21 >> de outubro de 2013 14:54 >> Para: Fred Pedrisa >> Cc: haproxy@formilux.org >> Assunto: Re: High CPU Usage (HaProxy) >> >> Hi Fred, >> >> I imagine that your high load is due to running many instances of >> HAProxy, but hard to be 100% without all the information. >> >> Load indicates that there are processes waiting to execute, so by >> reducing the number of HAProxy processes you should see a reduced load >> (but still high cpu utilization). >> >> You can accomplish the same effect as reloading settings by running >> another HAProxy process with the -sf parameter (this would potentially >> lead to more load, but could be mitigated by combining your many > instances). >> >> From the manpage: >> >> -sf <pidlist> >> Send FINISH signal to the pids in pidlist after startup. >> The processes which receive this signal >> will wait for all sessions to finish before exiting. >> This option must be specified last, followed >> by any number of PIDs. Technically speaking, SIGTTOU and >> SIGUSR1 are sent. >> >> Cheers, >> Jeff >> >> On Mon, Oct 21, 2013 at 12:46 PM, Fred Pedrisa <fredhp...@hotmail.com> >> wrote: >>> Hello, >>> >>> >>> >>> I am using many haproxy instances, for separated projects. >>> >>> >>> >>> This is causing a high cpu usage, and a high load in the OS up to >>> 12.00 and so on. >>> >>> >>> >>> The question is, using just one instance, would reduce the CPU load, >>> or it would make no difference at all ? >>> >>> >>> >>> Also, is there a way to just reload the settings of an already >>> running instance ? >>> >>> >>> >>> Thanks ! >>> >>> >> >
