Hi Richard, On Thu, Nov 15, 2007 at 01:39:51PM -0500, Richard A Steenbergen wrote: > So, I think you guys might want to do some performance tests on a wider > range of platforms before 1.3 is released. I just tried running a few > comparison tests between 1.3 (with various settings) and some older 1.2 > rrdupdate code, and got significantly worse performance on the newer > "better" code. <snip> > Haven't had free time to tinker with turning off some of the prodigious > madvise()'s or anything else, but clearly on some platforms this is not > working out so well.
I'm curious to see how 1.2.24 or 1.2.25 performs if your platform has a working posix_fadvise(RANDOM) call. Tobi cut rrdtool-1.2.25 to coincide with a LISA talk, and that has the fadvise performance optimization but without all the mmap changes, thus is a useful point of comparison. This is pretty much the configuration I'm having good performance with as reported in this paper: http://www.usenix.org/events/lisa07/tech/plonka.html Dave -- [EMAIL PROTECTED] http://net.doit.wisc.edu/~plonka/ Madison, WI _______________________________________________ rrd-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
