Activity Monitor

Displays common usage statistics relating to memory and CPU usage for the currently running processes. This tool provides information that is similar to that of the top tool.

BigTop

Displays system statistics, such as CPU, disk, network and memory usage graphically over time. You can monitor a single process or all processes. This tool provides information that i similar to that of the top and vm_stat tools.

Quartz Debug

Shows screen updates in real time by briefly flashing the areas being redrawn. You can use this tool to analyze your application’s drawing behavior.

Spin Control

Samples programs that cause the spinning cursor to appear. Leave this program running in the background to catch unresponsive applications at critical moments.

Thread Viewer

Graphically displays activity across a range of threads. It provides color-coded timeline views of thread activity and can display backtraces of activity at specific points in time.

fs_usage

Displays an ongoing list of file-system activity, as generated by page faults and calls to file-system functions. You can use this tool to understand the file access patterns of your program.

sc_usage

Displays an ongoing list of system call and page fault statistics.

top

Displays common system usage statistics relating to memory and CPU usage for the currently running processes. This tool updates the information dynamically so that you can see trends at runtime.