Zabbix Docker Instance - Problem with 4 second Peaks in Web scenario

[Stephan_Z]

Hello togheter,
we moved our Zabbix Server to a new server. At the same step, we changed our enviroment to use docker container (We follow the wiki from zabbix for the installation).

Since this we recognize some peaks in allour web scenarios. This scenarios belong to different servers on different hardware/network etc.. And every peak is a little bit over 4 seconds on each scenario



Structure
4 Docker containers (MYSQL, Zabbix-Server, Zabbix-Apache, Zabbix Java Gateway) on the same host.(2 CPUs, 16 GB Ram).
Zabbix Version 5.4.1

I will attach a log output from zabbix-server Container (Log Level 4 for HTTP Poller). Perhaps someone has an idea what there is happening. I have no glue.

Thanks for the support.

Kind Regards
Stephan

[Stephan_Z]

Here is the log extraction

Kidn Regards

[Stephan_Z]

I had a deeper look into the logs an i found a lot of this messages

zabbix_server [278]: ERROR [file and function: <lld_item.c,lld_items_get>, revision:5059e20, line:746] Something impossible has just happened.
278:20210809:070649.840 === Backtrace: ===
278:20210809:070649.840 11: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](zbx_backtrace+0x42) [0x5654d1232e2f]
278:20210809:070649.840 10: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](+0x156923) [0x5654d1172923]
278:20210809:070649.840 9: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](lld_update_items+0xed) [0x5654d117e2c3]
278:20210809:070649.840 8: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](lld_process_discovery_rule+0x487) [0x5654d1161136]
278:20210809:070649.840 7: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](+0x141db2) [0x5654d115ddb2]
278:20210809:070649.840 6: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](lld_worker_thread+0x320) [0x5654d115e446]
278:20210809:070649.842 5: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](zbx_thread_start+0x37) [0x5654d1243117]
278:20210809:070649.842 4: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](MAIN_ZABBIX_ENTRY+0x1232) [0x5654d107133c]
278:20210809:070649.842 3: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](daemon_start+0x30b) [0x5654d1232a32]
278:20210809:070649.842 2: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](main+0x325) [0x5654d1070030]
278:20210809:070649.842 1: /lib64/libc.so.6(__libc_start_main+0xf3) [0x7f93ce2d17b3]
278:20210809:070649.842 0: /usr/sbin/zabbix_server: lld worker #2 [processed 1 LLD rules, idle 26.497677 sec during 26.515904 sec](_start+0x2e) [0x5654d106ed0e]

But I'm not sure, if this has something to do with my peaks