Kolab 3 roundcube cannot load folder with hundreds of thousands of messages?

[Dimitris Beletsiotis]

Hi,

I am testing kolab 3 on Debian 7 (testing).

While testing folders with hundreds of thousands of messages it was
behaving normally up to approx 200,000 messages (with slowdown).
After approx. 225,000 messages inbox is not loading and error "server
error! (internal server error)" appears in roundcube.
System commands (ls,cat) are working in specific imap dir.
Other folders with less than 1000 messages are working fine at the same
time.

Tried also changing the filesystem mounted as /var from ext3 to xfs (since
xfs is known to behave much better with too many files especially in
parallel IO) but same problem persists.

I cannot find something useful in log files.

Any ideas?

Thanks,
Dimitris
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