> Does this boil down to meaning that the parts of a single RRD file are > physically close to each other on disk? And that multiple RRD files are > further apart? I can see how that would make things a bit faster or slower > but it doesn't seem like it would make the huge difference that some people > seem to see when they put multiple RRAs into one RRD.
man truss man strace Whatever one works, please use it, and look for seek/read/write calls. > Am I just clueless? :) Or does it make sense to you that the difference is > huge? Yes, and yes. Each RRD update involves seek/read/seek/write the header, and seek/write once per RRA. Doesn't matter (realistically) how many DS's there are for that update. rrd_update.c is the authoritice source on what really happens under the hood, but strace/truss and the like can also give you a view of what is happening - without having to know C. -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://lists.ee.ethz.ch/rrd-users WebAdmin http://lists.ee.ethz.ch/lsg2.cgi
