On Fri, Oct 26, 2007 at 09:47:38AM +0200, Fabien Wernli wrote: > Before: 294% iowait > 4.9MB/s read (hardware raid1 hidden to linux) > 1.1MB/s write > 4.6 loadavg > > After: 318% iowait > 57.9MB/s read (linux raid10 -> values have to be div by 2) > 2.3MB/s write > 8.9 loadavg > > tests made with rrdtool 1.2.10 and 1.2.19.
I forgot to mention that old server was a 2.4 32bit kernel, new one being a 2.6 64bit. also, I just tested rrdtool 1.3beta (w/mmap) and my problem seems to disappear totally. I changed "use lib" in update script to use rrdtool 1.3b at 12:25 (see graph). http://swissunix.free.fr/rrd/rrd_perf_1.3beta.png Now I don't understand why on earth it used to work so well on the old server and rrdtool 1.2.10 ... _______________________________________________ rrd-users mailing list rrd-users@lists.oetiker.ch https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
