[389-users] Re: dirsrv becomes completely unresponsible

Hi Rob,

thanks for answer.

Am 21.08.2018 um 14:05 schrieb Rob Crittenden:
> Jan Kowalsky wrote:
>> Hi all,
>>
>> we still struggeling with multiple problems in our 389-ds setup.
>>
>> I already opened the threads "disk i/o: very high write rates" and
>> "ldapsearch performance problem​".
>>
>> Another (the biggest) problem is, that dirsrv becomes suddenly totally
>> unresponsive. The server is still running, no errors in error-log - but
>> ldap queries are not answered and run in timeouts.
>>
>> The only way is to restart it. After restart everything is fine - for a
>> while. But sometimes it hangs immediately again after restart.
>>
>> I logged a straces while dirsrv was unresponsive:
>> https://nextcloud.datenkollektiv.net/s/qD8ojQZztMqbQtp
>
> You want to follow these instructions and file a bug with the output,
> https://directory.fedoraproject.org/docs/389ds/FAQ/faq.html#debugging-hangs

Unfortunately debugging with gdb and pstack doesn't work in my
environment (Debian Jessie The debugging symbols are installed - but
something seems to be wrong:

gdb -ex 'set confirm off' -ex 'set pagination off' -ex 'thread apply all
bt full' -ex 'quit' /usr/sbin/ns-slapd `pidof ns-slapd`

Thread 207 (Thread 0x7f2eb4f51700 (LWP 25429)):
#0 0x00007f2f661d7893 in select () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.

....



dpkg -l|grep 389-ds

ii 389-ds 1.3.3.5-4+deb8u1
all 389 Directory Server suite - metapackage
ii 389-ds-base 1.3.3.5-4+deb8u1
amd64 389 Directory Server suite - server
ii 389-ds-base-dbg 1.3.3.5-4+deb8u1
amd64 389 Directory Server suite - server debugging symbols
ii 389-ds-base-libs 1.3.3.5-4+deb8u1
amd64 389 Directory Server suite - libraries
ii 389-ds-base-libs-dbg 1.3.3.5-4+deb8u1
amd64 389 Directory Server suite - library debugging symbols
ii 389-ds-console 1.2.7-1
all 389 Directory Server Management Console
ii 389-dsgw 1.1.11-1
amd64 389 Directory Server Gateway

I'll try to update to stretch - maybe the dgb packages in jessie are
buggy. Or any other idea?

Thanks
Jan
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