Problem in fetching item

[nima0102]

Hi
Our zabbix server is 1.8.3 and agentd is 1.8.2.
Unfortunately some items are not fetch some times.for example :

2010.Sep.18 13:08:22 1
--There is not any fetched item for this time!
2010.Sep.18 13:06:23 1
2010.Sep.18 13:05:22 1
2010.Sep.18 13:04:22 1
.
.
.
--There is not any fetched item for this time!
2010.Sep.18 13:02:22 1
2010.Sep.18 13:01:22 1
2010.Sep.18 13:00:22 1

of course there is not any network problem!because in same time, another items from other host has been fetched.
Which parameters can I modify to solve this problem?
I have found these parameters to config file,But I do not know can solve my problem,or not!
1- Increase server->StartPollers ?
2- Increase agent->BufferSend ?
3- Increase agent->BufferSize ?
4- Increase agent->StartAgents ?
5-- Increase agent->Timeout ?
or other options?

note:this problem is only on items that are "agent" type not simple check.

Thanks for any help or guidance

[alixen]

Hi,

note:this problem is only on items that are "agent" type not simple check.

You can confirm that it is a problem with Zabbix agent items only by checking queue state in Administration/Queue and Overview option in drop down list.

If this is the case, you should try raising StartPollers in server config.

Regards,
Alixen

[nima0102]

Thanks for your attention
I have increase StartPollers in zabbix_server and zabbix_agnetd.conf on all agents.
But I have another problem that I think is related to these parameters!
In this topic I explain my issue.

Thanks for any help or guidance

[nima0102]

you can confirm that it is a problem with Zabbix agent items only by checking queue state in Administration/Queue and Overview option in drop down list.

I did not understand you mean.what should I check in Queue ??

Thanks

[alixen]

Hi,

I did not understand you mean.what should I check in Queue ??

Thanks

I mean look at the screen (example attached) and, if you are really having problems with zabbix agent items, you should see a lot of non zero values in the line "Zabbix agent".

Regards,
Alixen

[nima0102]

Thanks a lot for your attention
I have check Queue for 30 min and every 5 second refreshed that page in order to see changes in realtime.there is no non-zero in zabbix-agent field.
But My issue is not solved.
The trigger is fired in 3:44:6,but that item had value in 3:43:5 and 3:42:6!!
I think zabbix does not insert immediately to database after fetched one items.that means,
zabbix fetches value1 and value2 for item X,and does not insert to database(these values cache),in meanwhile for check triggers,the databases is checked that has no any value in 120 second so trigger is fired!

Thanks for more information.