Wrong stats on cpu and load

packet · Post by **packet** » Thu Dec 17, 2009 5:06 am

Hey,
i got problem with gapth cpu and load. I getting data via snmp (v1 and v2 checked) and cpu is 17% load 0.5 when on serwer i got cpu usage 800% and load 20. SNMP - Get Processor Information by core show good information but ucd/net - Load Average and ucd/net - CPU Usage is wrong. I got 2x Quad-Core AMD Opteron(tm) Processor 2378. Where can be bug or my mistake? I use cacti 0.8.7b and debian on cacti and remote server.

Post by **gandalf** » Fri Dec 18, 2009 8:18 am

CPU and load are difficult beasts these days with multi-cores, HT and stuff. net-snmp changed policy for reporting CPU load; former it was possible to have 100% per CPU, that is, on an 8 core, you could reach 800%.
Cacti takes the data it gets from the SNMP agent, but it leaves the interpretation to you.
R.

Post by **TheWitness** » Fri Dec 18, 2009 9:52 pm

There are some other counters that add to 100%, and I am sure there is a template on the forums for using it, but have not bothered with either developing one on my own, or looking for it.

TheWitness

wallb · Post by **wallb** » Wed Jan 06, 2010 5:55 am

I have a problem on two CACTI one 0.8.6i and the latest 0.8.7e wih full patch.
As you can see in the graph below, the poller doesn't take any value above 99%. Any idea ?
Regard.

wallb · Post by **wallb** » Wed Jan 06, 2010 6:13 am

ok I found this : http://docs.cacti.net/manual:087:4_help ... le_numbers
trying...

wallb · Post by **wallb** » Wed Jan 06, 2010 8:10 am

ok the link above work.

Cacti

Wrong stats on cpu and load

Wrong stats on cpu and load

wrong stats on multi core

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