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From "joelsherriff" <joelsherr...@comcast.net>
Subject Re: How to convert timestamp
Date Fri, 22 Oct 2004 18:19:20 GMT
I just tried it and to me it looks like that 7200000 is some kind of local
adjustment for timezone and/or
daylight savings time.  (7200000 is 2 hrs worth of milliseconds)  I tried it
with 10984684250000 (which
should be 10/22/04 19:07 - corrected for EST and DST)
I plugged this into the excel formula and it gave me 10/22/04 20:07.   So,
I'm not sure what the
formula should be, maybe someone else has deciphered it further...

J

----- Original Message ----- 
From: "Chuck Henson" <chenson@wellinx.com>
To: "JMeter Users List" <jmeter-user@jakarta.apache.org>
Sent: Friday, October 22, 2004 1:16 PM
Subject: RE: How to convert timestamp


> Hi Bob..
> What a great piece of information! I've certainly been doing this the hard
> way.
> However, I cannot seem to get this formula to work. I understand where all
> of the values are coming from (except the 7200000 that is added to the
> jmeter timestamp). the 86400000 is the number of miliseconds in a day
(since
> jmeter records it's timestamps in miliseconds), that converts the jmeter
> style of total number of miliseconds to Excel style of fractions of a day
> and the 25569 is the number of days from 1/1/1900 to 1/1/1970. dividing by
> the number of miliseconds in a day and then adding the number of days
> between the Excel startpoint and the Unix epoch should do the conversion.
> I'm confused about the 7200000 being added to the orginal timestamp, but
the
> formula doesn't convert to the correct timestamp regardless of whether I
add
> that value or not.. without the value, it's closer but still off by a
couple
> of hours (and minutes and seconds). I'm comparing the converted timetamp
for
> the first sample to the timestamp in the jmeter.log for when the first
> thread started. It is possible I suppose that they could be a second
(maybe
> even two) off, since I assume the jmeter.log timestamp is at the beginning
> of the first threads run and the first timestamp in the jtl is at the end
of
> the first sample, but not several hours. I tried rewriting the formula
> simply based on what I learned reading about Excel time values (thanks
Joel)
> and knowing that the jmeter timestamp is the number of miliseconds since
the
> epoch which gave me this [(A1/1000)+2209161600)/86400]. here I'm just
> converting the timestamp to number of seconds first then adding the number
> of seconds from 1/1/1900 to 1/1/1970 then dividing that total by the
number
> of seconds in a day. this didn't work either and yielded the same result
as
> the formula you supplied when I removed the mysterious 7200000 from the
> equation.
> I'm baffled, any suggestions?
> Thanks, Chuck
>
> -----Original Message-----
> From: Coret Bob [mailto:b.coret@pinkroccade.com]
> Sent: Friday, October 22, 2004 9:20 AM
> To: JMeter Users List; jmeter-user@jakarta.apache.org
> Subject: RE: How to convert timestamp
>
>
>
>
> I have found at least one way of transforming the JMeter results timestamp
> into a date and time using Excel.
>
> If cell A1 holds the timestamp (eg. 1098446512326) and you put the formula
> "=(A1+7200000)/86400000+25569" into cell B1 and change the format in
> "d-m-jjjj u:mm" it reads "22-10-2004 14:01". I have scraped the formula
> together from several sources, I can't yet explain all the numbers in the
> formula...
>
> Regards,
> Bob Coret
>
>
> -----Original Message-----
> From: Coret Bob
> Sent: Fri 22-10-2004 15:35
> To: jmeter-user@jakarta.apache.org
> Cc:
> Subject: How to convert timestamp
> The sample results contain a field called timeStamp. How (which algorithm)
> can I use to convert this timestamp to a format like HH:MM:SS DD-MM-YYYY ?
>
> I'd like to know the algoritm so I can make the calculation using Perl,
XLST
> of Excel...
>
> <sampleResult threadName="Test Scenario 11-1" responseMessage="OK"
> timeStamp="1098442834129" dataType="text" label="00 - Startpagina"
> responseCode="200" time="93" success="true"/>
>
> Regards,
> Bob Coret
>
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