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: [email protected] > 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:[EMAIL PROTECTED] > > Sent: Saturday, June 16, 2007 3:06 AM > > To: Dylan Vanderhoof > > Cc: [email protected] > > 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. > _______________________________________________ rrd-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
