[rrd-developers] rrdtool 1.3 cairo switch is done

Dylan Vanderhoof DylanV at semaphore.com
Fri Jun 15 21:31:34 CEST 2007

I figured that's why it wasn't the default, but removing it had no
effect on rrdtool performance, I was just playing with options.

I'm still seeing approximatly half the performance from trunk than I am
1.2.23 + fadvise.  (For fetch.  graph is about 1/3 the speed with trunk)
I'll without mmap when I get a chance to see if that's part of the

(FWIW, this is on linux 2.4.32, I haven't had a chance to test it on a
2.6.X server yet)


> -----Original Message-----
> From: Bernhard Fischer [mailto:rep.dot.nop at gmail.com] 
> Sent: Friday, June 15, 2007 12:25 PM
> To: Dylan Vanderhoof
> Cc: rrd-developers at lists.oetiker.ch
> Subject: Re: [rrd-developers] rrdtool 1.3 cairo switch is done
> On Fri, Jun 15, 2007 at 10:50:24AM -0700, Dylan Vanderhoof wrote:
> >Tried this on my test server.  Generated 515 graphs of ~30 days each.
> >Trunk functions fine and the graphs look good, but its substantially
> >slower than 1.2.23 w/ the fadvise patch.  (trunk compiled 
> with mmap and
> >directio)
> no. Don't use directio (unless all your rrd are on a RAM backed
> filesystem)!

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