If this occurs for a long period of time, you will need to investigate where the bottlenecks are for the graph updates.will be created and associated with the opsview host.This amounts to about 500,000 snmp variables being monitored.
The system is an IBM x Series 445 with (8) 2.7 GHz Xeon Hypterthreaded CPUs and 16 GB of RAM.
Storage is attached with a QLogic QLA2342 dual port 2 Gbps fibre channel HBA to two parallel Brocade SANs running to an EMC DMX-3 disk array.
To keep up, the write cycle needs to complete in under 200 seconds.
Graph of mrtg write performance, 2006-12-19 The load average on the machine was about 20, the cpu's were all stuck in iowait, and the disks were all 100% busy.
This KB provides troubleshooting procedures for graphs of known data points on a monitored device that fail to render in Resource Manager version 4.2.x.
RRDtool is more or less the defacto way to store time-series data in the information technology world.
Many sites are now monitoring more and more systems as a whole while increasing how much data they are collecting per system.
The ability to gather and store this much data is a testament to rrdtool's ease of use.
On the DMX-3, the host has its own front-end adapters (FAs) and a dedicated array of (30) 15K RPM disks set up as RAID 10.