Re: [Ganglia-developers] Avg Utilization
>I believe the graphs should be template driven, somewhat like the
>template pages.
I agree with Jesse that this is rather difficult with current code.
>- whether or not to show stats in the legend
In my graph.php I have (like in trunk):
# Make small graphs (host list) cleaner by removing the too-big
# legend: it is displayed above on larger cluster summary graphs.
if ($size == "small" and ! isset($subtitle))
$rrdtool_graph['extras'] = "-g";
>- whether or not to strip the domain name from hostnames (currently a
>global setting in conf.php)
In my graph.php I have (like in trunk):
# automatically strip domainname from small graphs where it won't fit
if ($size == "small") {
$strip_domainname = true;
# Let load coloring work for little reports in the host list.
if (! isset($subtitle) and $load_color)
$rrdtool_graph['color'] = "BACK#'$load_color'";
}
>There are probably other things that could be configured too.
With current code, we can easily add some value like the above without
requiring users to hack on templates or config files.
>One related issue is that the HTML pages should specify the height and
>width in the IMG tags for graphs - maybe a function is needed to
>generate IMG tags.
In older ganglia, the HTML set the size to values not equal to the image
generated. This forced the images to an unnatural size causing fonts to miss
pixels and other ugly effects. So sizes were removed to let the browser use
the actual image size.
-twitham
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Re: [Ganglia-developers] Avg Utilization
> IMO the graphs are already to cluttered for a quick overview and I have >ideas for adding even more clutter (that matters to me, like the date the Good idea to add the end date/time to graphs larger than default (like when you zoom an individual graph to save it). I think we can do this in graph.php. It is not needed on default graphs since you see the time on the HTML page and don't need this duplicated on all the graphs. >graph was produced :-). But if clutter doesn't matter, why not do both? I Where do you draw the line? I want to know average value of all metrics plotted, not just CPU or load. Why is memory less important? If we put all the numbers in text on the left, then they have to be labeled, duplicating the labels already in the graph legends. Since the graphs already have color-coded legend labels, it seems logical to add the mean values right there where the user is already looking. In some cases, this adds one text line (14 pixels?) to the image. In other cases it adds none. Either way, the fact that I can instantly see the average value of all the colored squiggly lines and areas, instead of having to eyeball a guess against the Y axis, makes up for the 14 pixels lost in the plotting area. We could even add 14 pixels to default graphs if that is a concern. It would be harder to go looking for the corresponding number in the text to the left of all the graphs. >do not believe that the additional overhead is such a problem. True. But it seems there has been some questions as to whether the calculations are being done correctly, and where the data comes from (load or CPU). That's why I think it is cleaner to leave only the current load data in the text, and add all average numbers to the graph images where the source is obvious. -twitham -- SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ ___ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
Re: [Ganglia-developers] Avg Utilization
On Wed, Dec 10, 2008 at 10:22, <[EMAIL PROTECTED]> wrote: >> This is slightly circular, since rrdtool will take height and >> width arguments for the size of the chart--*not* including >> the border, title, legend, etc--and return the total image >> size on the command line. However, since we use passthru(), >> this information is currently lost. > > That suggests that rrdtool needs some extra command line option telling > it that the dimensions are for the image size. Newer versions of rrdtool have this. I meant to mention that previously. -- Jesse Becker GPG Fingerprint -- BD00 7AA4 4483 AFCC 82D0 2720 0083 0931 9A2B 06A2 -- SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ ___ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
Re: [Ganglia-developers] Avg Utilization
On Wed, Dec 10, 2008 at 03:51, <[EMAIL PROTECTED]> wrote: >> IMO the graphs are already to cluttered for a quick overview >> and I have ideas for adding even more clutter (that matters >> to me, like the date the graph was produced :-). But if >> clutter doesn't matter, why not do both? I do not believe >> that the additional overhead is such a problem. > > I believe the graphs should be template driven, somewhat like the > template pages. While this would be nice, it would be very using the current web front end. The HTML template system currently in use is basically a "one-way" deal: the various PHP scripts process various things (.rrd files, taling to gmetad, etc), and stuff the results into pre-existing HTML template files. The templates themselves do not do anything besides presentation. Specifically, nothing in the templates are used as "input" for these calculations. > However, the choice of templates would replace the choice of graph sizes > - so the user would be able to choose which template they want. > > Each template could specify: > - graph size This is only possible because of clever (ab)use of HTML forms and URL parameter processing. The other ideas you mentioned (show stats, fonts, hostnames) cannot be driven explicitly at the template level, given the current code. > There are probably other things that could be configured too. Of course! :) > One related issue is that the HTML pages should specify the height and > width in the IMG tags for graphs - maybe a function is needed to > generate IMG tags. This is slightly circular, since rrdtool will take height and width arguments for the size of the chart--*not* including the border, title, legend, etc--and return the total image size on the command line. However, since we use passthru(), this information is currently lost. A further complication is that crafting the various reports is not always easy. Trying to make them flexible enough to be truly template driven will make the code much more complicated. Now, all of that said, I actually don't object to the idea of making the web frontend more flexible. In fact, I think that it is a great idea. But there's very much a tradeoff between making/keeping the code sane, and doing everything that we'd like. I propose something of a middle ground: make the various parts of the frontend generic enough that building a new template is straight forward. Specifically, make graph creating simpler, and in such a way that it is easy to specify a number of these different parameters--sizes, titles, etc. If things are set in the conf.php file, perhaps we could let a different .php file override some of the settings on a per-template basis? -- Jesse Becker GPG Fingerprint -- BD00 7AA4 4483 AFCC 82D0 2720 0083 0931 9A2B 06A2 -- SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ ___ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
Re: [Ganglia-developers] Avg Utilization
- Original Message > From: "Witham, Timothy D" <[EMAIL PROTECTED]> > To: Brad Nicholes <[EMAIL PROTECTED]>; "[EMAIL PROTECTED]" <[EMAIL > PROTECTED]>; "ganglia-developers@lists.sourceforge.net" > > Sent: Monday, December 8, 2008 5:48:31 PM > Subject: Re: [Ganglia-developers] Avg Utilization > > >> Windows users are looking at the figure and thinking that `Avg > >> Utilization' refers to CPU utilization (from the cpu_report graph). > >> > >> Maybe both are needed: > >> > >> cluster_util_load: displayed as `Avg Utilization (Load)' > >> > >> cluster_util_cpu: displayed as `Avg Utilization (CPU)' > >> > >> Can anyone suggest a better way to name these figures, or would this be > >> an acceptable patch? > > I would remove all that and put the numbers on the graphs only, like done in > trunk. I think it is clearer to have the % numbers on all of the graphs. > That > way the user sees average values for all metrics plotted, right there in the > graph legend. So they can look at CPU or Load or Memory or anything, instead > of > wondering what the number off to the side is. > > I have voted this way in the 3.1 STATUS file. > can't vote at the moment, but I really like the display of the average(s) on the overview pages. My vote is "+1". IMO the graphs are already to cluttered for a quick overview and I have ideas for adding even more clutter (that matters to me, like the date the graph was produced :-). But if clutter doesn't matter, why not do both? I do not believe that the additional overhead is such a problem. Cheers Martin -- SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ ___ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
Re: [Ganglia-developers] Avg Utilization
>> Windows users are looking at the figure and thinking that `Avg >> Utilization' refers to CPU utilization (from the cpu_report graph). >> >> Maybe both are needed: >> >> cluster_util_load: displayed as `Avg Utilization (Load)' >> >> cluster_util_cpu: displayed as `Avg Utilization (CPU)' >> >> Can anyone suggest a better way to name these figures, or would this be >> an acceptable patch? I would remove all that and put the numbers on the graphs only, like done in trunk. I think it is clearer to have the % numbers on all of the graphs. That way the user sees average values for all metrics plotted, right there in the graph legend. So they can look at CPU or Load or Memory or anything, instead of wondering what the number off to the side is. I have voted this way in the 3.1 STATUS file. -twitham -- SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ ___ Ganglia-developers mailing list Ganglia-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ganglia-developers
Re: [Ganglia-developers] Avg Utilization
>>> On 12/8/2008 at 5:38 AM, in message
<[EMAIL PROTECTED]
, <[EMAIL PROTECTED]> wrote:
>
> I've been getting a few questions about the Avg Utilization displayed on
> the web pages.
>
> Searching the code, I found it defined like this:
>
> meta_view.php: $cluster_util = sprintf("%.0f", ((double)
> find_avg($clusname, "", "load_one") / $avg_cpu_num ) * 100);
> meta_view.php:if (isset($cluster_util))
> meta_view.php: $tpl->assign("cluster_util", " size=\"-1\">Avg Utilization (last $range):"
> meta_view.php:
> ." $cluster_util%");
>
> In fact, the figure represents the average of load average values for
> the period graphed.
>
> Windows users are looking at the figure and thinking that `Avg
> Utilization' refers to CPU utilization (from the cpu_report graph).
>
> Maybe both are needed:
>
> cluster_util_load: displayed as `Avg Utilization (Load)'
>
> cluster_util_cpu: displayed as `Avg Utilization (CPU)'
>
> Can anyone suggest a better way to name these figures, or would this be
> an acceptable patch?
>
This sound appropriate to me.
Brad
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