Count how many users logged in simultaneously

[kyleparsons4842]

Hello,

I'm having a hard time figuring out how to determine how many computers are logged in at the same time throughout the day.  I'd like to create a graph with the x-axis being time (continuous) and the y-axis being a count of how many computers are logged in at that given time, granular down to the minute. 

My data table has columns: 

• ComputerID
• StartTime
• EndTime

I've found some solutions daily and hourly time frames, but I'm looking to see how to do it by minute and don't know if that is something I need to play with in the Date table? 

Any help you could provide would be appreciated!

[az38 · Accepted solution]

Hi @kyleparsons4842 

Yes, you have to create a datetime table with a minute step, smth like

CalendarTable = addcolumns(
generateseries(MIN('Table'[StartTime]), MAX('Table'[EndTime]), TIME (0,1,0 )), 
"are logged", 
calculate(count('Table'[ComputerID]), 'Table'[StartTime] <= EARLIER([Value]), 'Table'[EndTime]>=EARLIER([Value])))

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[kyleparsons4842]

Thank you @az38 !  

This works! Thanks for the help! Only problem is that I can only get a couple days worth of data to work because I keep getting an error saying not enough memory.  Would you happen to know of a way that I can do the "are logged" column in a measure instead?  

[az38]

@kyleparsons4842 

the better way to decrease memory consumption is to increase step of calculate to, for example 5 or 10 minutes.

I dont see any other appropriate way to get solution for your task with less resouces consumption

[kyleparsons4842]

@az38 Makes sense.  Thank you for the help!