So the get command itself doesn't cause a sample to be taken?
It just reports on the last sample, which would've been triggered
by something else? And you're looking for a way to represent the
last sample time in the case where no sample has ever been taken?
Well, I suppose -1 is reasonable in that case, but it is a small
incompatibility. I suppose we could consider it a bug fix since
with v2 it was lying when it told you the last sample time even
though no sample was taken.
Jennifer Chou wrote:
> Hi Bill,
>
> For the lastsampletime in the monitoring stats, we wanted to change what
> it is initialized to.
>
> In v3 lastsampletime is currently initialized to -1 when nothing has
> triggered a statistic measurement to be taken (ie ping a url for a web
> app).
> In v2 lastsampletime used to display the current time as the get command
> was run.
>
> We changed this in v3 because it seemed a more accurate reflection of
> the definition...
>
> lastsampletime - The time of the last measurement represented as a long,
> whose value is the number of milliseconds since January 1, 1970, 00:00:00.
> starttime - The time of the first measurement represented as a long,
> whose value is the number of milliseconds since January 1, 1970, 00:00:00.
>
> Do you think this will be ok?
>
> Examples....
>
> v2:
>
> server.applications.hello.server.activesessionscurrent-count = 0
> server.applications.hello.server.activesessionscurrent-description =
> Number of currently active sessions
> *server.applications.hello.server.activesessionscurrent-lastsampletime =
> 1255626451250*
> server.applications.hello.server.activesessionscurrent-name =
> ActiveSessionsCurrent
> server.applications.hello.server.activesessionscurrent-starttime =
> 1255626253015
> server.applications.hello.server.activesessionscurrent-unit = count
>
> server.applications.hello.server.sessionstotal-count = 0
> server.applications.hello.server.sessionstotal-description = Total
> number of sessions created
> server.applications.hello.server.sessionstotal-lastsampletime =
> 1255626451234
> server.applications.hello.server.sessionstotal-name = SessionsTotal
> server.applications.hello.server.sessionstotal-starttime = 1255626253015
> server.applications.hello.server.sessionstotal-unit = count
>
> v3:
>
> server.applications.hello.server.activesessionscount-current = 0
> server.applications.hello.server.activesessionscount-description =
> Number of active sessions
> server.applications.hello.server.activesessionscount-highwatermark = 0
> *server.applications.hello.server.activesessionscount-lastsampletime = -1*
> server.applications.hello.server.activesessionscount-lowwatermark = 0
> server.applications.hello.server.activesessionscount-name = ActiveSessions
> server.applications.hello.server.activesessionscount-starttime =
> 1255626696046
> server.applications.hello.server.activesessionscount-unit = count
>
> server.applications.hello.server.sessionstotal-count = 0
> server.applications.hello.server.sessionstotal-description = Total
> number of sessions ever created
> *server.applications.hello.server.sessionstotal-lastsampletime = -1*
> server.applications.hello.server.sessionstotal-name = SessionsTotal
> server.applications.hello.server.sessionstotal-starttime = 1255626696046
> server.applications.hello.server.sessionstotal-unit = count
>
> Thanks,
> Jennifer