To reduce the cpu usage in top, the -i parameter has been introduced to allow the user to tune this tradeoff. AccuracyĬalculating detailed memory statistics is fundamentally resource-inten- sive. u This is an alias equivalent to: -o cpu -O time. pid processid Only display processid in top. Only display the comma separated statistics.

Set the delay between updates to delay seconds. S Display information about swap usage and purgeable memory. r Traverse and report the memory object map for each process (default). This substantially reduces the amount of processor time top consumes.

R Do not traverse and report the memory object map for each process. Rshrd Resident shared address space size. Rprvt Resident private address space size. Some supported keys (see 'man top' for a full list):Ĭpu_me CPU time charged to me by other processes.Ĭpu_others CPU time charged to other processes by me. Order the process display by sorting on key in descending order.Ī + or - can be prefixed to the key name to specify ascending or Use skey as a secondary key when ordering the process display. However, doing so is deprecated command line usage. nprocs can be specifiedĪs the last command line argument without the -n flag preceding it. The number must be > 0 or an error will occur. Redisplaying, output is periodically printed in raw form.ĭisplay columns when using logging mode. Use logging mode and display samples samples, even if standard Update framework (-f) info every interval samples h Print command line usage information and exit. f Calculate statistics on shared libraries, also known as frame. This substantially reduces the amount of processor F Do not calculate statistics on shared libraries, also known asįrameworks. Count events relative to the previous sample.Ĭalculate CPU usage since the previous sample.Į Absolute mode. Calculate CPU usage and CPU timeĭ Delta mode. Count events cumulatively, startingĪt the launch of top. The supported modes are:Ī Accumulative mode. This makes it viable to create a shell alias for top with preferred defaults specified, then override those preferred defaults as desired on the command

If conflicting options are specified, later specifications override earlier ones. SyntaxĬommand line option specifications are processed from left to right. The default key for sorting is pid, but other keys can be used instead. Periodically displays a list of processes on the system in sorted order. List running processes on the system, in sorted order.

Check cpu usage mac terminal