=?iso-8859-1?q?Michael=20Chan?= wrote: > However, I found that I could only update the database > at or after 8:00 a.m. everyday. Therefore, I extract > the data from my database by "rrdtool fetch email.rrd > AVERAGE" and I c the following: > > in out > > 993427200: 1.1333172454e+02 1.4733057870e+02 > 993513600: 2.0600000000e+02 3.0600000000e+02 > > In fact, 993427200 refers to "Mon Jun 25 08:00:00 > 2001" and 993513600 refers to "Tue Jun 26 08:00:00 > 2001".
In fact, this is not true. 993427200 refers to Mon Jun 25 00:00:00 2001 UTC 993513600 refers to Tue Jun 26 00:00:00 2001 UTC Emphasis on UTC. > Any idea? RRDtool works with time slots that are based on the unix epoch. All times are numbers of seconds since this epoch. For an RRA with time slots of 86400 seconds, all times must, and will, be an interger multiple of 86400. If you want to update at midnight for your local time zone, you need to have an interval that ends at every possible midnight in your time zone. Think about daylight saving, currently you are eight hours behind but if daylight saving is not applied this will be seven hours. You need to be able to update at midnight during both differences. The largest possible interval for you is thus one hour. You can still update each 24 hours if you wish, no problem. Just make sure heartbeat is large enough. If you update each 24 hours and you have 1-hour time slots, 24 of them will be filled simultaniously. HTH -- __________________________________________________________________ / [EMAIL PROTECTED] [EMAIL PROTECTED] \ | work private | | My employer is capable of speaking therefore I speak only for myself | +----------------------------------------------------------------------+ | Technical questions sent directly to me will be nuked. Use the list. | +----------------------------------------------------------------------+ | http://faq.mrtg.org/ | | http://rrdtool.eu.org --> tutorial | +----------------------------------------------------------------------+ -- 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
