Re: active queue fluctuation when not enough free memory

2008-10-17 Thread Victor Duchovni
On Fri, Oct 17, 2008 at 01:19:17PM -0400, Ofer Inbar wrote: > Wietse Venema <[EMAIL PROTECTED]> wrote: > > Ofer Inbar: > > > Victor Duchovni <[EMAIL PROTECTED]> wrote: > > > > Your queue manager is crashing. > > > [...] > > > > Queue manager re-starts. > > > > > > Is that a bug? Should it handle

Re: active queue fluctuation when not enough free memory

2008-10-17 Thread Wietse Venema
Ofer Inbar: > Wietse Venema <[EMAIL PROTECTED]> wrote: > > Ofer Inbar: > > > Victor Duchovni <[EMAIL PROTECTED]> wrote: > > > > Your queue manager is crashing. > > > [...] > > > > Queue manager re-starts. > > > > > > Is that a bug? Should it handle this situation more gracefully? > > > > No, you

Re: active queue fluctuation when not enough free memory

2008-10-17 Thread Ofer Inbar
Wietse Venema <[EMAIL PROTECTED]> wrote: > Ofer Inbar: > > Victor Duchovni <[EMAIL PROTECTED]> wrote: > > > Your queue manager is crashing. > > [...] > > > Queue manager re-starts. > > > > Is that a bug? Should it handle this situation more gracefully? > > No, you should not restart the queue ma

Re: active queue fluctuation when not enough free memory

2008-10-17 Thread Wietse Venema
Ofer Inbar: > Victor Duchovni <[EMAIL PROTECTED]> wrote: > > Your queue manager is crashing. > [...] > > Queue manager re-starts. > > Is that a bug? Should it handle this situation more gracefully? No, you should not restart the queue manager willy-nilly. Wietse

Re: active queue fluctuation when not enough free memory

2008-10-17 Thread Ofer Inbar
Victor Duchovni <[EMAIL PROTECTED]> wrote: > Your queue manager is crashing. [...] > Queue manager re-starts. Is that a bug? Should it handle this situation more gracefully? Now, a more interesting question: What is the incremental memory cost of each smtp process? According to pmap -d, the s

Re: active queue fluctuation when not enough free memory

2008-10-17 Thread Victor Duchovni
On Fri, Oct 17, 2008 at 11:16:44AM -0400, Ofer Inbar wrote: > We recently observed something strange: After doubling the number of > smtp processes in master.cf and restarting, the size of the active > queue started fluctuating over time in almost exact inverse of the > incoming queue. I'm using

active queue fluctuation when not enough free memory

2008-10-17 Thread Ofer Inbar
We recently observed something strange: After doubling the number of smtp processes in master.cf and restarting, the size of the active queue started fluctuating over time in almost exact inverse of the incoming queue. I'm using Ganglia to track the sizes of the queues on a graph, and the queue gr