Analysis of sampling bjam (pid 62142) every 1 millisecond
Call graph:
    1776 Thread_3302173   DispatchQueue_1: com.apple.main-thread  (serial)
      1776 start
        1776 main
          1776 make
            1776 make1
              1776 exec_cmd
                1776 exec_wait
                  1776 read_descriptor
                    1534 __memcpy
                    233 strlen
                    9 free_large
                      9 deallocate_pages
                        9 munmap

Total number in stack (recursive counted multiple, when >=5):

Sort by top of stack, same collapsed (when >= 5):
        __memcpy        1534
        strlen        233
        munmap        9