cacti not sharing the load

[tephra]

Hi Guys,

as you can see from these stats it appears as though Cacti isn't load balancing the DS requests:

06/13/2008 10:34:06 AM - SYSTEM STATS: Time:65.3387 Method:spine Processes:15 Threads:10 Hosts:2325 HostsPerProcess:155 DataSources:1386 RRDsProcessed:861
06/13/2008 10:32:57 AM - SYSTEM STATS: Time:56.7961 Method:spine Processes:15 Threads:10 Hosts:2325 HostsPerProcess:155 DataSources:84 RRDsProcessed:55
06/13/2008 10:31:57 AM - SYSTEM STATS: Time:56.7737 Method:spine Processes:15 Threads:10 Hosts:2325 HostsPerProcess:155 DataSources:73 RRDsProcessed:44
06/13/2008 10:30:57 AM - SYSTEM STATS: Time:56.2802 Method:spine Processes:15 Threads:10 Hosts:2325 HostsPerProcess:155 DataSources:80 RRDsProcessed:51
06/13/2008 10:29:59 AM - SYSTEM STATS: Time:56.7063 Method:spine Processes:15 Threads:10 Hosts:2325 HostsPerProcess:155 DataSources:99 RRDsProcessed:70

861 onetime, vs 55 or 44 another time...

Shouldn't spine/cacti be balancing the DS's so that we are spreading the load?

Cheers
D.

[gandalf]

Are you using different polling intervals for your data sources?
Reinhard

[tephra]

yes, about 100 are on 5min interval, the remaining 2200 are on 15min intervals.

so I was hoping that cacti would split the 2200ish into 146 (2200/15) and poll those 146 every 1 minute.

but it doesn't seem to work that way?

[gandalf]

No, definitively it does NOT work that way. It will poll all 15min devices at the same interval. There's no such thing as a "polling offset" until now
Reinhard