Re: [Ganglia-developers] Regarding string metrics

2011-03-14 Thread Archana N
Hi, Boomerang seems a nice option, but I am working in a cloud environment and Boomerang requires javascript to be embedded in every page that needs to be monitored. The applications are run on the lighttpd servers by the users and it might seem intrusive to embed javascript into their application

Re: [Ganglia-developers] Regarding string metrics

2011-03-13 Thread Vladimir Vuksan
There are multiple levels of looking at performance. Tool I wrote analyzes server side performance since that was the main goal of project however you could adapt it to analyze any other type of response times ie. there is a parser that takes URLs and how long it took the web server to serve th

Re: [Ganglia-developers] Regarding string metrics

2011-03-12 Thread Neil McKee
Here's another option to consider. Finding the top N of some category is addressed well using random-sampling of transactions, and a new extension to sFlow will allow HTTP servers to report transaction samples in a standard format: http://blog.sflow.com/2011/01/http.html The current draft it

Re: [Ganglia-developers] Regarding string metrics

2011-03-12 Thread Archana N
Hi, Thank you so much. This looks really interesting. I am working on a project to monitor the performance of lighttpd servers in a cloud environment(for resource provisioning purposes) . Also, in the blog, I was not clear by the term "response time". Is it the response time as perceived by the cl

Re: [Ganglia-developers] Regarding string metrics

2011-03-12 Thread Vladimir Vuksan
You could use Ganglia but depending on number of unique URLs this may not be such a great idea. I did something similar at a previous job to evaluate page response times (aggregated on hourly basis). You can find it here https://github.com/vvuksan/pagetime-analyzer I blogged about it here htt

Re: [Ganglia-developers] Regarding string metrics

2011-03-12 Thread Archana N
Hi, I was also thinking of having metrics for counting the number of access of a particular string, but the problem is I am working with an application which has many directories (similar to wordpress) and there are a lot of directories which get different amount of hits by the users and I would l

Re: [Ganglia-developers] Regarding string metrics

2011-03-11 Thread Rick Cobb
Ganglia doesn't have a model for aggregating string-valued metrics. On the other hand, you can get a long way by having your metrics-gathering modules post a count *per string* (e.g., "www.yahoo.com:hits", 15); you'll have a ton, though, so you may want to use some sort of naming prefix to help or

[Ganglia-developers] Regarding string metrics

2011-03-11 Thread Archana N
Hi, I am using Ganglia for monitoring lighttpd server statistics in a cloud environment. In my case I would have string metrics such as the pages which are frequently accessed etc. I understand that if there are many clusters, then Ganglia aggregates the information at the grid level. This is poss