Re: Graceful degradation in overload conditions

2009-04-06 Thread Andrew Morgan
On Sat, 4 Apr 2009, Gary Mills wrote: > We had a situation recently where our Cyrus back-end server > encountered a memory shortage. The initial result was slow response, > but that provoked an increase in the number of imapd, pop3d, and lmtpd > processes, making the problem much worse. The lmtp

Re: Graceful degradation in overload conditions

2009-04-06 Thread Eric Luyten
On Sat, April 4, 2009 3:19 pm, Gary Mills wrote: > We had a situation recently where our Cyrus back-end server > encountered a memory shortage. The initial result was slow response, but > that provoked an increase in the number of imapd, pop3d, and lmtpd > processes, making the problem much worse.

Re: Graceful degradation in overload conditions

2009-04-04 Thread Wesley Craig
On 04 Apr 2009, at 09:19, Gary Mills wrote: > What about imapd and pop3d daemons, which also consume resources? > Are limits a good idea here too? Users will complain to the help > desk when those limits are reached, of course. Can the msg/shutdown > file be used to control imapd processes in a n