On 8.11.2010, at 7.34, Ralf Hildebrandt wrote:
I'm getting constantly high numbers of page reclaims & involuntary context switches for dovecot/auth.
Is it intentional that you have both passdb shadow and passdb pam enabled?
page reclaims = minor faults = cpu switching back to system-mode, But why is the auth process doing that so excessively? Same for the large number of involuntary context switches...
I'm not sure. But:
type real user sys reclaim faults swaps bin bout signals volcs involcs auth 205.93 1.32 2.76 25280 0 0 0 0 0 261 1425
It's still only 2.76 seconds of system CPU from the total of 205 seconds it was running, so that can't really cause the big system CPU usages you see..
ssl-params 288.71 0.40 0.48 468 0 0 8 0 0 8 1 pop3 0.59 0.80 0.20 651 0 0 48 16 0 12 13 managesieve 0.51 0.00 0.28 576 0 0 416 0 0 13 7 imap 4677.82 0.19 0.89 1480 0 0 488 16 0 23550 136 pop3-login 181.77 0.32 0.28 780 0 0 8 0 0 46 9
Same for the rest of these processes.
What about after you stop Dovecot? Then you should see lines from the permanently running processes (master, anvil, log).