Hello, I've done some work on the RRD api to speed up the rrd backend which is often the slow part of pollers (along with reachability). The code is currently sitting in git but will be in the next release.
The first change is to fix up the code around using rrdcached which stops the IO waiting for those larger sites, the rrdtool client talks to the cached and then immediately returns, letting the cached to eventually update the rrd files. The second change is, where possible, to use the RRD php module instead of direclt calling the rrdtool binary like it currently does. These two items have made a significant change to my test setup. Before the changes I had 12-108 ms response times with a typical response between 40 to 80 ms. After the change the times dropped to 1-8 ms with most being 3-4 ms. Below is one sample from a few days ago and now showing the difference, the main thing is to see the number after the B: Before (27.03 ms): 23:59:59 CH:2 (9109): : H 14 : I 3246 : P 90 : no_poller(): 0 -> rrd(*): forward_jitter:0 - backward_jitter:0 - forward_packetloss:0 - backward_packetloss:0 (time P: 0.01 | B: 27.03) After (4.19ms) : 23:10:45 CH:3 (26186): : H 14 : I 3246 : P 90 : no_poller(): 0 -> rrd(*): forward_jitter:0 - backward_jitter:0 - forward_packetloss:0 - backward_packetloss:0 (time P: 0.01 | B: 4.19) -- Craig Small VK2XLZ http://enc.com.au/ csmall at : enc.com.au Debian GNU/Linux http://www.debian.org/ csmall at : debian.org GPG fingerprint: 5D2F B320 B825 D939 04D2 0519 3938 F96B DF50 FEA5 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ jffnms-users mailing list jffnms-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jffnms-users
