<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 8 Dec 2011, at 00:40, Gregory Sloop wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; ">Provided I understand these configs right, you've got:<br><br>BC> AVERAGE 0.5 1 5040 #1008<br>5040 minutes of 1 min resolution data. (i.e. 84 hours or 3.5 days)<br><br>BC> AVERAGE 0.5 12 21600 #4320<br>BC> MIN 0.5 12 21600 #4320<br>BC> MAX 0.5 12 21600 #4320<br><br>Then the next set is 12 minute steps, and you've got 180 days of 12min<br>data.<br><br>[These compress the prior 1 min steps by a factor or 1:12.<br>Again, provided I understand correctly. This seems excessive - I'd<br>probably keep 30 - 90 days of 12 min data. But I'm not sure what your<br>goals are - perhaps that 12 minute data is more important than I<br>realize. But I think I should catch most important stuff in 3 days,<br>and after 30 days, the data's not terribly important for higher<br>resolution needs.]<br><br>BC> AVERAGE 0.5 144 3600 #720<br>BC> MAX 0.5 144 3600 #720<br>BC> MIN 0.5 144 3600 #720<br>Then 360 days of 144 minute (~2.3 hr resolution) data.<br><br>---<br>Here's what I do:<br><br>I keep one minute data too, and I use<br>BC> AVERAGE 0.5 1 4320 #3 days, 60 sec resolution<br><br>BC> AVERAGE 0.5 10 4320 #30 days at 10 min resolution<br>BC> MIN 0.5 10 4320 #<br>BC> MAX 0.5 10 4320 #<br>[90 days might be better, but I don't often wish for more than 30-60<br>days]<br><br>BC> AVERAGE 0.5 144 2400 #400 days at 2 hr resolution<br>BC> MAX 0.5 144 2400 #<br>BC> MIN 0.5 144 2400 #<br><br>IIRC, this results in about 8.5MB rrd files for each monitored device.<br>This seems like a pretty reasonable file size for me.<br><br>I just calculated it, and this appears to use roughly 0.77 KB per row of<br>data. [~770KB per 1000 RRD rows or ~1300 rows/MB.]<br><br>HTH<br><br>-Greg<br></span></blockquote></div><div><br></div><div><br></div><div><br></div><div>Hi Greg,</div><div><br></div><div>Many thanks for this excellent reply. I can't find documentation that answers this question:</div><div><br></div><div>If I adjust:</div><div><br></div><div><div>*** Database ***</div><div><br></div><div>step = 60</div><div>pings = 20</div></div><div><br></div><div><br></div><div>to different values do I have to adjust the </div><div><br></div><div><div># consfn mrhb steps total</div></div><div><br></div><div><br></div><div>lines in step with the adjustments made to the step and pings?</div><div><br></div><div>Thanks</div><div>Brian</div><div><br></div></body></html>