How the Openbullet's CPM Calculation works?

carbinegamerz · December 17, 2024, 9:50pm

Hey @Ruri and all Openbullet Users ,
I wanna know how the CPM (checks per minute) calculation logic works in the program. I am myself a coder and I was trying to build a web scraper but I can’t manage to make the CPM calculation as precise as it is shown in Openbullet.

Can someone give me the code for it or explain how its working and how can I implement it myself?

Thanks in advance.

XMR · December 27, 2024, 10:59pm

“CPM (checks per minute)”
Checks divided by elapsed time (as seconds) multiplied by 60

carbinegamerz · December 28, 2024, 9:15am

Thanks for the reply. I know what CPM means but in OpenBullet it keeps updating regurarly and I tried what you said here but it does not give as precise results as the CPM in Openbullet

XMR · December 28, 2024, 2:44pm

Share the code of your CPM calculation and how you use it. Also, please explain your problem further, wdym with “precise results”.

Ruri · January 26, 2025, 12:02pm

Hey,

you can check out the code, it’s all open source ^^

github.com

openbullet/OpenBullet2/blob/9443f23eb8de02b8bfe6427601277e25a0cdfc49/RuriLib.Parallelization/Parallelizer.cs#L370-L387


      
          [MethodImpl(MethodImplOptions.AggressiveOptimization)]
          protected void UpdateCPM()
          {
              // Update CPM (only 1 thread can enter)
              if (Monitor.TryEnter(cpmLock))
              {
                  try
                  {
                      var now = DateTime.Now;
                      checkedTimestamps = checkedTimestamps.Where(t => Environment.TickCount - t < 60000).ToList();
                      CPM = checkedTimestamps.Count;                                
                  }
                  finally
                  {
                      Monitor.Exit(cpmLock);
                  }
              }
          }

I add the value of Environment.TickCount after each successful check to a list, then filter it every second from just 1 thread (the DateTime.Now is some leftover code that’s not used anymore, I should have removed it).

It might not be the most optimized way to do it, but it works.