[rrd-developers] rrdtool 1.3 cairo switch is done
DylanV at semaphore.com
Sat Jun 16 20:12:03 CEST 2007
Hmm. Clearing out the SVN directory and redoing it from scratch gave me
much closer results:
denver bin # time rrdtool fetch ~/test.rrd AVERAGE > ~/out
denver bin # time ./rrdtool fetch ~/test2.rrd AVERAGE > ~/out2
The 1.3 rrdtool is still slower, but not by much (those times are
I've attached an strace anyways in case its enlightening. (FWIW, box is
a dual 3Ghz P4 Xeon w/ HT enabled, and has 1G RAM total, w/ about 364M
> -----Original Message-----
> From: Bernhard Fischer [mailto:rep.dot.nop at gmail.com]
> Sent: Saturday, June 16, 2007 3:06 AM
> To: Dylan Vanderhoof
> Cc: rrd-developers at lists.oetiker.ch
> Subject: Re: [rrd-developers] rrdtool 1.3 cairo switch is done
> On Sat, Jun 16, 2007 at 11:48:09AM +0200, Bernhard Fischer wrote:
> >On Fri, Jun 15, 2007 at 12:31:34PM -0700, Dylan Vanderhoof wrote:
> >>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
> >>1.2.23 + fadvise. (For fetch. graph is about 1/3 the speed with
> >>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
> >>2.6.X server yet)
> >Just to be sure, run make clean and then configure with mmap again
> >(don't forget a make install). Can you send the logfile created by
> >strace -s4096 -o /tmp/rrdtool-trunk.mmap.1.log /there/rrdtool ...
> >You are using pristine trunk, without any additional patches, right?
> >What revision are you using (i assume you're on i386)?
> Hm. How fast is your CPU and how much RAM does that box have?
> Note that i'm just interrested in the fetch part for now.
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