[rrd-developers] rrdtool 1.3 cairo switch is done

[Dylan Vanderhoof]

Wow, I sent this over a month ago.

My exchange server apparently sucks.  (Big surprise there)

-D

> -----Original Message-----
> From: Dylan Vanderhoof 
> Sent: Saturday, June 16, 2007 11:12 AM
> To: Bernhard Fischer
> Cc: rrd-developers at lists.oetiker.ch
> Subject: Re: [rrd-developers] rrdtool 1.3 cairo switch is done
> 
> 
> 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
> 
> real    0m0.005s
> user    0m0.010s
> sys     0m0.000s
> denver bin # time ./rrdtool fetch ~/test2.rrd AVERAGE > ~/out2
> 
> real    0m0.007s
> user    0m0.010s
> sys     0m0.000s
> 
> The 1.3 rrdtool is still slower, but not by much (those times are
> repeatable).
> 
> 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
> free)
> 
> -D
> 
> > -----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
> 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
> > >>issue.
> > >>
> > >>(FWIW, this is on linux 2.4.32, I haven't had a chance to 
> test it on
> a
> > >>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.
>