If there were no error messages logged with 1.1.5, there's nothing I
can think of that could explain it.
Im not sure when this started, but im seeing very high CPU use in dovecot. I recently swapped our systems to Linux from FreeBSD, and ive also moved versions up a few (now on 1.1.6).
Here's an idea of what im seeing:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
28554 xxx 20 0 11108 1452 1136 R 17 0.0 0:00.76 imap
28542 xxx 20 0 11004 1456 1120 R 16 0.0 0:00.86 imap
28552 xxx 20 0 11108 1504 1136 R 16 0.0 0:00.64 imap
28550 xxx 20 0 11168 1556 1176 R 15 0.0 0:00.78 imap
28485 xxx 20 0 11192 1588 1152 R 14 0.0 0:01.58 imap
24161 xxx 20 0 11124 1684 1204 R 13 0.0 0:20.44 imap
28521 xxx 20 0 13388 1816 1308 R 13 0.0 0:01.60 imap
28545 xxx 20 0 11108 1448 1136 R 13 0.0 0:00.82 imap
28486 xxx 20 0 11232 1612 1152 R 12 0.0 0:01.38 imap
28565 xxx 20 0 11268 1644 1148 R 12 0.0 0:00.56 imap
32470 xxx 20 0 15972 2428 1400 R 11 0.1 0:55.74 imap
28520 xxx 20 0 11152 1600 1212 R 11 0.0 0:01.10 imap
25056 xxx 20 0 13584 2072 1396 R 10 0.1 0:36.64 imap
25677 xxx 20 0 11108 1612 1172 R 10 0.0 0:09.22 imap
28347 xxx 20 0 11328 1708 1220 R 10 0.0 0:03.54 imap
At what stage does dovecot use a lot of CPU? What makes this more complicated is that im not seeing it on all servers. I currently have 35 in production and about 5 are showing this. A bit too many to be a server issue. Load is equally distributed so it's not that those 5 have more users on them.
Cor