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<br>
Then start it with strace and try to investigate.<br>
<br>
strace -f -s 16384 dovecot -F 2>/tmp/dovecot.debug<br>
<br>
Let it run some time and test (file can be very large !!!) after
some tests hit ctrl-c and investigate the debug file. <br>
Check for socket io and file io etc.<br>
<br>
Rgds.<br>
<br>
Franz<br>
<br>
<br>
Am 02.12.13 23:42, schrieb Christian Hügel:<br>
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<blockquote cite="mid:529D0CD2.2000202@stonebyte.de" type="cite">
<pre wrap="">Thank you for your reply. resolv.conf looks fine. Also starting dovecot
in the foreground doesn't reveal any errors. I'm stucked.
Christian
Am 02.12.2013 19:36, schrieb Franz Skale:
</pre>
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<pre wrap="">
Start dovecot in the foreground using option -F
enable full debugging. (Dovecot.conf).
Or start dovecot unsing strace.
These are standard debugging options you can try.
ALso check your DNS setup. (resolv.conf)
Do you use dovecot indexes ?
Rgds.
Franz
Am 02.12.13 19:27, schrieb Christian Hügel:
</pre>
<blockquote type="cite">
<pre wrap="">This has to do with Centos 6.5. There is no issue with Centos 6.4; I've
just setup up a VM. The question is which files causes this issue.
Christian
Am 02.12.2013 17:07, schrieb Franz Skale:
</pre>
<blockquote type="cite">
<pre wrap="">
Check for hanging threads.
Also check ,that your sysctl.conf maxfilenr is big enough.
Change your init script accordingly. (ulimit -n 4096 before the start
option)
Check sysctl.conf:
fs.inotify.max_user_instances = 4096
fs.file-max = 2000000
do: sysctl -p after changing the sysctl.conf
Check the dovecot error log. /var/log/dovecot-error.log (on debian systems)
Rgds
Franz
Am 02.12.13 17:01, schrieb Christian Hügel:
</pre>
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<pre wrap="">Hi Franz,
with those options dovecot specially.
</pre>
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<pre wrap="">login_max_processes_count = 1024
login_max_connections = 2048
</pre>
</blockquote>
<pre wrap="">the dovecot server hangs and isn´t accessible anymore.
Christian
Am 02-12-2013 16:47, schrieb Franz Skale:
</pre>
<blockquote type="cite">
<pre wrap="">Check your dovecot settings.
Also, the the dovecot error log.
Typical settings of a busy host:
mail_max_userip_connections = 100
login_max_processes_count = 1024
login_max_connections = 2048
In the init script use ulimit -n 4096
Then try again.
Rgds.
Franz
Am 02.12.13 15:41, schrieb Christian Hügel:
</pre>
<blockquote type="cite">
<pre wrap="">i,
I´m running imapsync-1.569-1.el6.noarch on a Centos 6.5 x64 system
with 8GB RAM and a dual 3Ghz AMD cpu. The sync runs on the "target
server and the source server is a dovecot 1.2.1
Here are some stats:
0.01 msgs/s 63.780 KiB/s ETA: Mon Dec 2 22:31:21 2013 28528 s 328 msgs
left
0.01 msgs/s 65.135 KiB/s ETA: Tue Dec 3 01:17:36 2013 38356 s 327 msgs
left
0.01 msgs/s 65.076 KiB/s ETA: Mon Dec 2 21:44:20 2013 25560 s 326 msgs
left
0.01 msgs/s 65.238 KiB/s ETA: Mon Dec 2 23:08:44 2013 30484 s 325 msgs
left
0.01 msgs/s 65.181 KiB/s ETA: Mon Dec 2 21:26:25 2013 24344 s 324 msgs
left
0.02 msgs/s 65.122 KiB/s ETA: Mon Dec 2 20:18:12 2013 20251 s 323 msgs
left
0.02 msgs/s 65.235 KiB/s ETA: Mon Dec 2 19:46:36 2013 18332 s 322 msgs
left
and the cpu is during the sync at 100% The size of the mails are
normal no attachments so I realy don´t know where´s the issue here.
The size of the mailbox is only 300MB but I have a couple of huge
mailboxes (>17GB). With this speed it´s quite impossible to migrate my
mailboxes to the new kolab 3.1 server
Can you please help me out with this issue? Thank you
Christian
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