Hi Florian, On Mon, Sep 28, 2009 at 10:32:52AM +0200, Florian Schlichting wrote: > On Thu, Sep 24, 2009 at 06:17:55PM +0200, Sebastian Harl wrote: > > Okay, so it seems we've got a rather major speed-down in rrdgraph Sarge > > ??? Etch (RRDtool 1.0 ??? 1.2) and another one Etch ??? Lenny (RRDtool 1.2 > > ??? > > 1.3). In the former case, RRDtool switched from using libgd to libart > > for doing the graphing, in the latter case, they switched to libcairo > > (and libpango). I'm pretty sure, the speed-down is related to that. In > > the course of the 1.3.x releases some optimizations have been applied > > which improved the effect a bit but there still is a notable speed-down. > > > > Anyway, frankly, I've got no idea what to do about that. > > well, I think that's a good explanation. So it's not a "bug", but an > intentional design decision with not-so-intentional side effects.
Right. Those side-effects would warrant a *wishlist* bug report though, imho. > I don't know about upstream's motivation for those switches, but > perhaps it would be worthwhile to benchmark graphing with the > different libraries / RRDtool versions and reevaluate their merits in > that light? I'm not sure about the motivations either :-/ Benchmarks would be really great. Are you willing to take care of that? > If upstream is willing to think in those directions, "wishlist" might be > appropriate, otherwise I'd think it would be useful to document that an > FPU is essential, and graphing more than 30-50 machines or so will require > *significant* resources -- wait, I'm thinking munin here... > "wontfix, bloat, by design"? I can image that this is quite annoying. Imho, that's a mix of, well, suboptimal design in both, munin and RRDtool :-/ Cheers, Sebastian -- Sebastian "tokkee" Harl +++ GnuPG-ID: 0x8501C7FC +++ http://tokkee.org/ Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin
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