On Tue, Aug 21, 2007 at 12:23:34PM -0700, Dylan Vanderhoof wrote: >Wow, I sent this over a month ago. > >My exchange server apparently sucks. (Big surprise there)
:P Can you send the strace output mentioned below (in bz2 to me privately if it is too big)? cheers, > >-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 > _______________________________________________ rrd-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
