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From "Leon Rosenberg" <rosenberg.l...@googlemail.com>
Subject Re: timestamp of tomcat startup?
Date Sat, 06 Jan 2007 21:44:08 GMT
Cool :-)

Btw, If you care about monitoring that much, you should consider using
something more powerful. Something that can give you more info than
just up/down, but also average request duration, amount of errors in
last 1/5/15 minutes, number of requests and that sort of stuff.

Leon

On 1/6/07, cifroes <cifroes@netcabo.pt> wrote:
> Leon Rosenberg wrote:
> > On 1/6/07, cifroes <cifroes@netcabo.pt> wrote:
> >> cifroes wrote:
> >> > Hi,
> >> >
> >> > catalina.out hast the time Tomcat took to startup but I need to know
> >> > the timestamp [date of when tomcat started] of when tomcat is ready to
> >> > receive requests.
> >> >
> >>
> >> Let me clarify a bit:
> >> I need this timestamp to measure downtime of a server, I don't need
> >> exactly precision to the ms but at most 0.5second error margin.
> >>
> >> And the timestamp should be made when tomcat server is ready to receive
> >> requests or at least 0.5second error margin between when Tomcat is
> >> accepting requests and that timestamp.
> >>
> >> I hope it's clear now :)
> >
> > Yes, it is, and allow me to say, that you are taking the completely
> > false approach for this problem. If you want to measure the downtime
> > of the server you should do this by sending requests periodically
> > (once a second or whatever timeframe your need)  from another tool
> > like jmeter, ab or simply a perl/bash script calling wget or curl.
> > The fact that tomcat thinks its up, doesn't mean it's not down. Only
> > when it actually responses (and the responses make sense) it can be
> > considered up.
> > Evaluating start time for this matter is kindof childish :-)
> >
> > regards
> > Leon
> I'm already doing it client-side, I now want to get a server-side
> approach, even if it's only an approximation. That's because my clients
> don't connect directly to the tomcat server, they have
> load-balancer/proxy stuff in the middle.
>
> I can do a local client polling every 1sec but that's too invasive, I'm
> happy with the timestamp Tomcat thinks it's up. :)
>
>
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