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).

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