>>> "Sunil Modi (IT)" <[EMAIL PROTECTED]> 11/1/2004 11:54:05 AM >>> >How can I define an RRA to capture every second as opposed to every 5 minutes? > >Right now I do RRA:AVERAGE:0.5:1:576 (captures every 5 minutes for 48 hours) > >I want an RRA to capture every second for 24 hours. Is that possible? > >Thanks, > >Sunil Modi
You really don't want to use RRDTool then. Don't forget that it "normalizes" the data, thus giving you potentially partially incorrect information. Run a script through cron, from the command line or some other process if under windows. RRDTool is not going to give (IMHO) inaccurate results. I've run RRDTool in 1 second, 10 second, 30 second and 1 minute increments to compare data and graphs. I did this a while ago, but the best option I came up with for graphing any time slice under 30 seconds was to run a script that read in data and output it to a log file, then import this data right into RRDTool once an hour to control exactly the values of the data I wanted. It was a long time ago, but I didn't have the option of the potential for normalization, so I logged the data to a text file with the time, then once an hour I took this data, made sure I had 3600 points, and shoved them into a one-second RRA. I realize this may introduce errors, but I felt it was acceptable rather than getting normalized data. The lowest resolution I have in an RRA today is (I think) ten seconds. Even that introduces too much error, but it is what was requested. Paul -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
