Folks, I have run some preliminary performance tests with Bernhards MMAP stuff. Herare are some results from my Thinkpad:
* in-cache update performance went up form 12k/s to 22k/s * cache usage is greatly reduced (3-5 times is my guess). this lets more rrd files stay in cache which again reduces the need to read data from disk and improves performance ... * The max to-disk-write-speed of 250 updates/s gets realised much more often. My guesstimate is that 1.3 should be able todo 50k updates in a 5 minute interval on a 5.4krpm laptop disk with 1GB ram in the box. I have also added a new command TEXTALIGN to the rrdtool graph module that lets you specify the default legend alignement. Until now it was always "justified" unless you used escape characters at the end of a line. I continue to update the http://oss.oetiker.ch/rrdtool-trac/wiki/RRDtool13 document cheers tobi -- Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten http://it.oetiker.ch [EMAIL PROTECTED] ++41 62 213 9902 _______________________________________________ rrd-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
