What do the red telephone and blue telephone mean in iOS Xcode Instruments? -

I tried to find a legend for these graphics and colors, but I did not find anything that would definitely be the tool Was referring to does anybody know? In particular, black line with blue and red telephone, red lollipops and red bars. What do they all mean?

It appears that red and blue telephone icons are kernel event messages, and other icons are red alarm bells that indicate kernel interrupts if you click on those icons You will see a popup with specific details.

I checked in my project and the red telephone was always consistent with BSCI * programs, while blue phones matched the MSC_ * event.

The event list for the XNU / MacOS kernel is listed here:

I do not know what BSc vs. MSC (Maybe someone else can answer?) But I It seems that the MSC is a generic low-level event message network, such as MSc_match_msg_trap, while BSc offers more specialized high-level events such as BCC_Get Timefide.