AC­TIV­ITY MON­I­TOR A guided tour to aid di­ag­no­sis

Mac Format - - FEATURE -

Choose a re­source

Switch be­tween the dif­fer­ent re­source types the app can track us­ing the tabs at the

top of the win­dow. To add ex­tra in­for­ma­tion to the ta­ble, or re­move what you don’t need to see, choose items listed un­der View > Col­umns, or ≈- click a col­umn header as a quick route to the same op­tions. This en­ables you to strip the ta­ble down to the ba­sics to make di­ag­no­sis of a prob­lem a sim­pler process.

In­spect a process

Ac­tiv­ity Mon­i­tor refers to apps and back­ground ser­vices

as pro­cesses. Those that are un­re­spon­sive will be red, while black ones are run­ning as ex­pected; graph­ics or video apps, for ex­am­ple, may turn red while do­ing some­thing in­ten­sive – use your judg­ment based on what you asked the app to do. Use the search box (top right) to lo­cate spe­cific items, or click a col­umn header to sort based on it.

Quit a process

Quit or force quit a process by se­lect­ing it in the ta­ble and

click­ing this but­ton. How­ever, where pos­si­ble avoid quit­ting pro­cesses that don’t have your lo­gin name in the User col­umn, as they’re core OS X func­tions. Use the ‘i’ but­ton to find out more about the se­lected process. Here you can ex­tract a sam­ple of what it’s do­ing be­hind the scenes to send to its de­vel­oper to as­sist them with de­bug­ging.

A vis­ual sum­mary

The graph at the bot­tom of each tab shows a his­tor­i­cal record of the re­source be­ing

con­sumed. The CPU chart is un­usual in hav­ing two graphs in the same box, show­ing us­age at­trib­uted to sys­tem and user pro­cesses. Red and blue graphs on the Net­work chart show in­com­ing and out­go­ing data. In all in­stances, the most re­cent mea­sure­ment is on the right; data scrolls left as later sam­ples are taken.

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