Hi Mark, opening files is an expensive operation as oposed to writing to a file ... so having more DS in a single file makes things faster ... unfortunately this places the whole burden of managing the DSs on rrdtool or rather on you since rrdtool has no built-in functionality for adding and removing DS ...
cheers tobi Yesterday Mark Plaksin wrote: > Tobias Oetiker <[EMAIL PROTECTED]> writes: > > > Hi Mark, > > > > I have not done serious work into performance analysis, but you may > > want to make sure that you have lots of memory and that you use a > > current version of rrdtool with memory mapped io support (1.2 does > > that for you) > > Thanks, Tobi! We are going to switch to 1.2 soon and will use mmap. > > Given the way RRDtool is written, do you have a feel for whether one DS per > RRD or many DSes per RRD should perform better? Different people say one > or the other is better. > > -- > Unsubscribe mailto:[EMAIL PROTECTED] > Help mailto:[EMAIL PROTECTED] > Archive http://lists.ee.ethz.ch/rrd-users > WebAdmin http://lists.ee.ethz.ch/lsg2.cgi > -- ______ __ _ /_ __/_ / / (_) Oetiker @ ISG.EE, ETL F24.2, ETH, CH-8092 Zurich / // _ \/ _ \/ / System Manager, Time Lord, Coder, Designer, Coach /_/ \.__/_.__/_/ http://people.ee.ethz.ch/oetiker +41(0)44-632-5286 -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/rrd-users WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
