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From sebb <seb...@gmail.com>
Subject Re: Summing attributes of child elements
Date Mon, 03 Aug 2009 02:04:23 GMT
On 31/07/2009, Pieter Ennes <pieter@watchmouse.com> wrote:
> On 31-07-09 13:24, Pieter Ennes wrote:
>
> > Hello,
> >
> > We're a bit confused about the numbers in this XML snippet (edited for
> > readability, hope not too much removed):
> >
> > <httpSample t="3773" lt="0" [...] rc="200" rm="OK" by="709260">
> > <httpSample t="2608" lt="595" rc="302" rm="Found"
> > by="321851"/>

Seems like a very large size for a redirect.

> > <httpSample t="1163" lt="988" rc="200" rm="OK" by="65558"/>
> > </httpSample>
> >
> > Element had follow redirects on, redirect automatically off.
> >
> > t = 2608 + 1163 = 3771

There may be slight gaps between the samples so the overall time can
be slightly longer than the sum of the individual samples.

> > lt = 595 + 988 = 1583

Latency cannot be added; it applies to a single sample only.

> > by = 321851 + 65558 = 387409
> >
>
>  Heh, my colleague found out that for 'by' coincidentally:
>
>  Total (709260) - Expected (387409) is exactly the size of the first request
> (321851)
>
>  Which is a bit odd at least, and would suggest that the byte size of first
> request is counted twice in the parent. Not sure how this translates to the
> timing though.

Yes, that does look a bit odd; need to look further at that.

>  --
>   - Pieter
>
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