[Orca-users] working with mixed-column data sources...

[Attila Mezei-Horvati]

Thanks for the reply. I like the article and plan on
checking the others, too. 

My problem however is a little different. I am trying
to monitor the performance of a web application on the
server. It is called only from time to time, so I do
have complete metrics (timestamp, startup time,
communication with the network, operations, total
duration) but I don't have it layed out based on a
specific interval. Sometimes I have an entry at 5
seconds, sometimes I have it after two three hours. I
can set the interval to 5 seconds but then what should
I use for the non-existing timestamps? I cannot put 0
since that would alter my statistics, make it look
like everything was alright (bringing down the total
avg, too).

Attila

--- "Cockcroft, Adrian" <acockcroft at ebay.com> wrote:

> 
> The original idea for the file format was to have
> collated performance
> metrics using a single timestamp, rather than trying
> to merge lots of
> unsynchronized **stat tools output. The original
> name was percolator,
> before Blair made it into orcallator and built the
> display components.
> See
> 
> http://www.itworld.com/AppDev/1609/UIR960301perf/
> for the original
> description and
>
http://perfcap.blogspot.com/2005/10/sunworld-columns-at-itworld.html
> for
> a list of info on similar topics.
> 
> So the ideal way to include a new metric is to add a
> column for it and
> report it at the same frequency as everything else.
> You can convert
> another logfile by counting its event rate, the same
> way as http access
> logs are summarized into orca.
> 
> Adrian
> 


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