It is normal to have the 6-10 mdworker process running all the time?

Is this normal? I was not able to know how much Supply mdworker is average? I see anywhere from 6 to 13 at one point. This number even when the computer is sitting idle, nothing to do. Is Spotlight plugins in the folder Extensions cause? It's as if they're all waiting for something to index rather than wait until there is something running.

See on Mac Pro, Macbook Pro and Mac mini on 10.11.3. Anyway, just curious.

Spotlight re-indexing of the process are scheduled to kick off when you first turn on your machine (s) for the day, but will shoot upward if you attach nonindexed storage.

It is customary for a swarm of mdworker process that will be launched. These processes will vary depending on the available CPU threads, memory and internal/external storage devices that require indexing. If you have a multi-terabytes, Bay external storage Thunderbolt or drive Time Machine, Spotlight is perfectly willing to chew away at home and depending on the content, maybe for hours. Spotlight system preferences panel has a Privacy tab to exclude indexing of selected storage.

This morning, for about 45 minutes after turning on my Mac with 10.11.3, Spotlight mdworker process numbered 14 and after 45 minutes, were dropped to only 5. This seems to be the minimum of mdworker that these hang autour in a sleep state, apparently to the call for additional indexing if necessary.

Tags: Mac OS & System Software

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