item SNMPv2 update interval

[bert.v]

Hi,

I'm trying to monitor a Cisco 2960-48TT switch with SNMP running Zabbix 1.6.5 on Debian Lenny.
I've created an SNMPv2 item FastEthernet0/48-OUT with an interval of 5 secs (see attached screenshot), but when looking at the latest data I get the values below. The time frame between the different values is approx 35s, so the update interval of 5 secs is not working?

2009-10-21 09:29:35 1256110175 4600
2009-10-21 09:28:59 1256110139 3976
2009-10-21 09:28:25 1256110105 4120
2009-10-21 09:27:56 1256110076 4200
2009-10-21 09:27:36 1256110056 5616
2009-10-21 09:27:10 1256110030 3896
2009-10-21 09:26:31 1256109991 4104
2009-10-21 09:26:01 1256109961 3808
2009-10-21 09:25:39 1256109939 3280
2009-10-21 09:25:12 1256109912 5240
2009-10-21 09:24:35 1256109875 4080
2009-10-21 09:24:04 1256109844 2728
2009-10-21 09:23:33 1256109813 4352
2009-10-21 09:22:58 1256109778 5000
2009-10-21 09:22:26 1256109746 4616
2009-10-21 09:22:01 1256109721 3016
2009-10-21 09:21:40 1256109700 4632
2009-10-21 09:21:03 1256109663 4808
2009-10-21 09:20:32 1256109632 4224
2009-10-21 09:20:06 1256109606 4048
2009-10-21 09:19:44 1256109584 4432

[MrKen]

I can't imagine why anyone would want to update every 5 seconds. Most people update switch ports every 1, 2, 3, or 5 minutes. Of course, 5 seconds will give you some very nice graphs, but the down side is your database is going to fill up very quickly! (Take some time to calculate how many values are going into your db every day).

The reliability of the update interval will be influenced by how many items you are monitoring. If you are monitoring many items, or monitoring lots of items every 5 seconds, then you probably need to increase the number of Pollers in your zabbix.server.conf

MrKen

[bert.v]

It wasn't my intention to monitor every port that often, just one port.
And indeed by increasing the number of pollers I'm able to poll the port every 5 secs.
Thanks for the help.