cpfrefsd usando continuamente 26% di CPU

Ho notato un process cfprefsd properties; di root utilizzando il 26% di CPU costantemente. Ho visto questo thread SuperUser che ha suggerito l'utilizzo di fs_usage per scoprire quale process potrebbe essere coinvolto. Nel mio caso, ha mostrato che ripete più volte il file /private/var/root/Library/Preferences/com.apple.xpc.activity2.plist . Qualcuno ha idea di quale applicazione potrebbe triggersre questo?

Quando converto il file plist in formato leggibile con plutil -p , mostra:

 { "DateSubmitted" => { "com.apple.quicklook.cloudThumbnailDatabaseCleanup" => 2017-06-04 19:38:58 +0000 "com.apple.periodic-daily" => 2017-06-04 19:38:53 +0000 "com.apple.SymptomFramework.MaintenanceActivity" => 2017-06-04 19:39:02 +0000 "com.apple.usbd.messageTracerLogging" => 2017-06-04 19:38:53 +0000 "com.apple.coreduetd.people" => 2017-06-04 19:38:53 +0000 "com.apple.helpd.sdmmap_updating" => 2017-06-04 19:38:58 +0000 "com.apple.backupd-auto.dryspell" => 2017-06-04 19:38:53 +0000 "com.apple.awdd.publication" => 2017-06-04 19:38:53 +0000 "com.apple.applessdstatistics.activity" => 2017-06-04 19:38:53 +0000 "com.apple.apsd.apprefresh" => 2017-06-04 19:39:16 +0000 "com.apple.noticeboard.update" => 2017-06-04 19:38:58 +0000 "com.apple.applessdbgrefresh.activity" => 2017-06-04 19:38:53 +0000 "com.apple.backupd-auto" => 2017-06-04 19:38:53 +0000 "com.apple.awdd.trigger:0x7f004:86400:2" => 2017-06-04 19:38:53 +0000 "com.apple.periodic-weekly" => 2017-06-04 19:38:53 +0000 "com.apple.revisiond.requeue_chunking" => 2017-06-04 19:38:53 +0000 "com.apple.coreduetd.knowledge" => 2017-06-04 19:38:53 +0000 "com.apple.security.syspolicy.rearm" => 2017-06-04 19:38:53 +0000 "com.apple.CacheDelete.daily" => 2017-06-04 19:38:53 +0000 "com.apple.SoftwareUpdate.Activity" => 2017-06-04 19:38:53 +0000 "com.apple.periodic-monthly" => 2017-06-04 19:38:53 +0000 "com.apple.awdd.trigger:0x7f006:14400:2" => 2017-06-04 19:38:53 +0000 } "DateCompleted" => { "com.apple.mds.3" => 2017-06-05 01:09:08 +0000 "com.apple.backupd-auto.dryspell" => 2017-06-05 19:38:55 +0000 "com.apple.mds.5" => 2017-06-05 01:08:54 +0000 "com.apple.periodic-weekly" => 2017-06-04 19:40:27 +0000 "com.apple.awdd.publication" => 2017-06-05 17:14:54 +0000 "com.apple.usbd.messageTracerLogging" => 2017-06-05 03:38:54 +0000 "com.apple.security.syspolicy.rearm" => 2017-06-05 19:40:03 +0000 "com.apple.mds.7" => 2017-06-05 01:08:45 +0000 "com.apple.mds_stores.2" => 2017-06-05 01:38:11 +0000 "com.apple.applessdbgrefresh.activity" => 2017-06-04 20:14:01 +0000 "com.apple.mds.9" => 2017-06-05 01:08:45 +0000 "com.apple.SymptomFramework.MaintenanceActivity" => 2017-06-05 08:14:01 +0000 "com.apple.mds_stores.5" => 2017-06-05 01:09:08 +0000 "com.apple.applessdstatistics.activity" => 2017-06-04 19:40:08 +0000 "com.apple.awdd.trigger:0x7f006:14400:2" => 2017-06-05 18:50:54 +0000 "com.apple.mtmd.thinning" => 2017-06-05 21:37:55 +0000 "com.apple.mds_stores.1" => 2017-06-05 21:46:35 +0000 "com.apple.mds.0" => 2017-06-05 21:20:07 +0000 "com.apple.backupd-auto" => 2017-06-05 20:57:35 +0000 "com.apple.mds.2" => 2017-06-05 01:09:08 +0000 "com.apple.coreduetd.people" => 2017-06-05 16:37:52 +0000 "com.apple.mds_stores.4" => 2017-06-05 01:08:58 +0000 "com.apple.mds.4" => 2017-06-05 01:08:54 +0000 "com.apple.metadata.mds_stores.power" => 2017-06-05 21:45:04 +0000 "com.apple.SoftwareUpdate.Activity" => 2017-06-05 19:40:03 +0000 "com.apple.CacheDelete.daily" => 2017-06-05 07:38:55 +0000 "com.apple.mds.6" => 2017-06-05 01:07:52 +0000 "com.apple.revisiond.requeue_chunking" => 2017-06-05 21:38:53 +0000 "com.apple.mds_stores.0" => 2017-06-05 21:46:35 +0000 "com.apple.mds.8" => 2017-06-05 01:08:45 +0000 "com.apple.icloud.findmydeviced.launch-on-reboot" => 2017-06-04 19:38:55 +0000 "com.apple.awdd.trigger:0x7f004:86400:2" => 2017-06-05 17:14:54 +0000 "com.apple.mds_stores.3" => 2017-06-05 01:08:58 +0000 "com.apple.coreduetd.knowledge" => 2017-06-05 16:37:52 +0000 "com.apple.metadata.mds.power" => 2017-06-05 01:08:58 +0000 "com.apple.periodic-daily" => 2017-06-05 07:40:05 +0000 "com.apple.mds.1" => 2017-06-05 01:09:08 +0000 "com.apple.mds_stores.6" => 2017-06-05 01:09:08 +0000 "com.apple.periodic-monthly" => 2017-06-04 19:40:03 +0000 } "LogLevel" => 7 } 

AGGIORNAMENTO: Poco dopo che ho postato questo, ho notato che si era calmata. Invece di scrivere continuamente questo file, sta scrivendo solo una volta al minuto. Ancora mi chiedo cosa sia.

C'è stato un backup di Time Machine in corso quando ho notato il problema, e ha terminato circa 13 minuti fa. Mi chiedo se questo potrebbe essere stato correlato.