In case you're still wondering, no we don't run gmetad on Intel Macs (we do run gmond on our Intel Mac Minis). We only run gmetad on the head node, which is a G5 Mac Pro.
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:ganglia- > [EMAIL PROTECTED] On Behalf Of Gilad Raphaelli > Sent: Wednesday, May 09, 2007 5:56 PM > To: Nick Galbreath > Cc: [email protected] > Subject: Re: [Ganglia-developers] Web frontend graph sizes > > Nick, > > Well I'm glad its not just something I'm doing wrong > - thanks for the explanation. I'm not desperate for a > fix, just wanted to do some local development work on > the frontend. I'm looking forward to testing out > early versions including the libapr changes. For now > VMWare w/Ubuntu runs gmetad just fine on a MBP. > > Thanks, > > Gil > > --- Nick Galbreath <[EMAIL PROTECTED]> wrote: > > > yes, I've seen this on a mac too. > > > > The gmetad code is somewhat odd in that is uses > > "poll" one file descriptor > > at time, one thread at a time. which is not how it's > > normally used. I > > _THINK_ this was done to do read timeouts on the > > socket, however this can > > now be done safely with libapr. (it's really just a > > wrapper around > > setsockopt). on the mac, it appears there is a race > > condition where poll > > signals "yes I have data to read" and "yes the > > client disconnected" when > > gmetad and gmond are on the same box. > > > > Also the gmetad code is inefficient in that it > > reads 1K blocks at a time, > > most sockets have 4-8k buffers, and the typically > > gmond xml is _quite_ > > large. This might aggravate the problem on the mac. > > > > This can all be cleaned up, but I'd need the > > go-ahread the ganglia crew (to > > convert native calls to use libapr). > > > > I think I might have a quick patch laying around > > (which just undoes the > > poll, which isn't needed) so it works on mac. If > > you are desperate let me > > know! > > > > --nickg > > > > > > On 5/9/07, Gilad Raphaelli <[EMAIL PROTECTED]> > > wrote: > > > > > > On a seperate note, are you running gmetad on a > > mac? > > > I've been unable to get it to run on an intel mac, > > > debug reports: > > > > > > The remote machine closed connection for > > [localhost] > > > data source after 1023 bytes read > > > > > > It usually reports 1023 or 2046 bytes but > > occasionally > > > it actually gets the full 3069 bytes or other non > > > 2^n-n number but never actually writes any rrds. > > This > > > is 3.0.4 built with Apple's default gcc4. > > > > > > Anyone else have any pointers? > > > > > > Gilad > > > > > > --- Matthew Chambers > > <[EMAIL PROTECTED]> > > > wrote: > > > > > > > Hi all, > > > > > > > > > > > > > > > > I recently started using Ganglia on our Mac Mini > > > > cluster and I noticed that > > > > the graphs are resized from their native size so > > > > that they fit the > > > > templates. This didn't make a lot of sense to > > me, > > > > so I edited the system so > > > > that the images returned by graph.php calls are > > used > > > > as-is. I added two > > > > variables "sx" and "sy" which are passed in the > > > > graph.php call specifying > > > > the desired width and height of the output > > image. > > > > This approach means that, > > > > at least for the image calls which are fully > > > > specified from the templates, > > > > the dimensions can be specified in the template > > and > > > > needn't be worried about > > > > anywhere else. When I made this modification I > > > > discovered that the width > > > > and height that rrdgraph takes are actually the > > > > dimensions of the canvas > > > > (the inside box that the actual graph is plotted > > > > on), and they don't include > > > > the outer box. Rrdgraph does provide a way to > > get > > > > the final image's > > > > dimensions (--imginfo), but it is not possible > > to > > > > use it while also using > > > > the standard output mode (which is what the > > > > graph.php call does). So I > > > > added a second call in graph.php which writes to > > > > /dev/null and simply parses > > > > the output dimensions and adjusts the dimensions > > > > given to the second call by > > > > the amount necessary to make the final > > dimensions > > > > match the "sx" and "sy" > > > > variables. Since the "z" variable is obsolete > > but > > > > was still used to change > > > > the graph style slightly for the host graphs, I > > > > changed it to a "formtype" > > > > variable ("f") with values of "compact" or > > "normal." > > > > Oh, I also changed the > > > > images to PNG instead of GIF since the rrdtool > > > > documentation says that PNGs > > > > are generated as fast or faster and are as small > > or > > > > smaller than GIFs. > > > > Here's the code: > > > > > > > > > > > > > > > > # > > > > > > > > # Generate the rrdtool graph command. > > > > > > > > # > > > > > > > > if ($formtype != "compact") > > > > > > > > { > > > > > > > > $command = RRDTOOL . " graph > > /dev/null > > > > --start $start --end $end > > > > ". > > > > > > > > "--width $width --height $height > > > > $upper_limit $lower_limit ". > > > > > > > > "--title '$title' $vertical_label > > > > $extras $background ". > > > > > > > > " --imgformat 'PNG' --imginfo > > > > '%s\n%lu %lu' ". > > > > > > > > $series; > > > > > > > > > > > > > > > > $imginfo = exec($command); > > > > > > > > $dims = explode(" ", $imginfo); > > > > > > > > $width = $width - ($dims[0]-$width); > > > > > > > > $height = $height - > > ($dims[1]-$height); > > > > > > > > } > > > > > > > > > > > > > > > > $command = RRDTOOL . " graph - --start $start > > --end > > > > $end ". > > > > > > > > "--width $width --height $height $upper_limit > > > > $lower_limit ". > > > > > > > > "--title '$title' $vertical_label $extras > > > > $background ". > > > > > > > > #"--imgformat 'PNG' ". > > > > > > > > "--step 5 ". > > > > > > > > $series; > > > > > > > > > > > > > > > > > > > > > > > > There are a few problems with this approach: 1) > > > > /dev/null is platform > > > > specific (are there other parts of Ganglia that > > are > > > > already platform > > > > specific so that this isn't such an issue?); 2) > > if > > > > the layout of the graph's > > > > legend changes when the dimensions are adjusted, > > the > > > > adjustments won't be > > > > correct, and I'm not sure what the best approach > > is > > > > to fix this. Let me > > > > know what you guys think about this approach. > > If > > > > it's satisfactory, I'll > > > > submit the changes to the repository. > > > > > > > > > > > > > > > > Also, has there been any discussion about using > > SVG > > > > instead of raster > > > > formats for the graph output? It would > > introduce > > > > serious user agent > > > > compatibility considerations, but it would > > provide > > > > quite a lot of potential > > > > benefits (interactivity, anyone?). Rrdtool's > > SVG > > > > output would need to be > > > > improved, though. > > > > > > > > > > > > > > > > Thanks, > > > > > > > > Matt Chambers > > > > > > > > > > > > > > > ------------------------------------------------------------------------- > > > > This SF.net email is sponsored by DB2 Express > > > > Download DB2 Express C - the FREE version of DB2 > > > > express and take > > > > control of your XML. No limits. Just data. Click > > to > > > > get it now. > > > > http://sourceforge.net/powerbar/db2/> > > > _______________________________________________ > > > > Ganglia-developers mailing list > > > > [email protected] > > > > > > > > > > https://lists.sourceforge.net/lists/listinfo/ganglia-developers > > > > > > > > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Tired of spam? Yahoo! Mail has the best spam > > protection around > > > http://mail.yahoo.com > > > > > > > > > ------------------------------------------------------------------------- > > > This SF.net email is sponsored by DB2 Express > > > Download DB2 Express C - the FREE version of DB2 > > express and take > > > control of your XML. No limits. Just data. Click > > to get it now. > > > http://sourceforge.net/powerbar/db2/ > > > _______________________________________________ > > > Ganglia-developers mailing list > > > [email protected] > > > > > > https://lists.sourceforge.net/lists/listinfo/ganglia-developers > > > > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 > > express and take > > control of your XML. No limits. Just data. Click to > > get it now. > > http://sourceforge.net/powerbar/db2/> > _______________________________________________ > > Ganglia-developers mailing list > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/ganglia-developers > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! 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