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Question : Thunderbolt disk very slow after 10.12.5 update

Hi all,


I have installed the 10.12.5 system update 2 days ago.


After the restart, my external "My Book Thunderbolt duo" RAID-1 array was marked degraded - as usual with Sierra updates. I have waited almost 2 days to see the array online again.


Sadly, the disk I/O are very slow : according to BlackMagic app, no more than 4 MB/s.


The array is connected to thunderbolt 2 cable to my Mac Pro computer. The cable is alone on its bus. I have tried the 3... no changes.


Despite restarts, impossible to get reasonable speed.


I have opened an assistance ticket to Apple.


Anybody in the same situation ? Mac OS stability is really poor now...

Mac Pro, macOS Sierra (10.12.5)

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20 mai 2017 à 11h24 en réponse à Cortex99fr En réponse à Cortex99fr

I have plugged the disk array to an MacBook Air with 10.12.5. Same behaviour.


I have these strange messages in logs when I plug the disks :


SandboxViolation: AssetCache(497) deny file-read-metadata /Volumes

Violation: deny file-read-metadata /Volumes

Process: AssetCache [497]

Path: /usr/libexec/AssetCache/AssetCache

Load Address: 0x10ff8d000

Identifier: AssetCache

Version: ??? (???)

Code Type: x86_64 (Native)

Parent Process: launchd [1]

Responsible: /usr/libexec/AssetCache/AssetCache [497]

User ID: 235

Date/Time: 2017-05-20 09:14:40.902 GMT+2

OS Version: Mac OS X 10.12.5 (16F73)

Report Version: 8

Thread 0 (id: 5082):

Thread 1 (id: 205077):

Thread 2 (id: 211921):

Thread 3 (id: 211926):

Thread 4 (id: 211927):

Binary Images:

MetaData: {"build":"Mac OS X 10.12.5 (16F73)","action":"deny","target":["Volumes"],"hardware":"Mac","platform_binary ":"no","profile":"unknown","process":"AssetCache","op":"file-read-metadata"}


And :


SandboxViolation: IDECacheDeleteAp(6960) deny mach-lookup com.apple.coresymbolicationd

Violation: deny mach-lookup com.apple.coresymbolicationd

Process: IDECacheDeleteAp [6960]

Path: /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex/Conte nts/MacOS/IDECacheDeleteAppExtension

Load Address: 0x10af47000

Identifier: com.apple.dt.IDECacheDeleteAppExtension

Version: 1 (1.0)

Code Type: x86_64 (Native)

Parent Process: launchd [1]

Responsible: /Applications/Xcode.app/Contents/PlugIns/IDECacheDeleteAppExtension.appex/Conte nts/MacOS/IDECacheDeleteAppExtension [6960]

User ID: 501

Date/Time: 2017-05-20 09:14:40.991 GMT+2

OS Version: Mac OS X 10.12.5 (16F73)

Report Version: 8

Thread 0 (id: 211964):

Thread 1 (id: 212006):

Thread 2 (id: 212007):

Thread 3 (id: 212008):

Thread 4 (id: 212010):

Binary Images:

MetaData: {"build":"Mac OS X 10.12.5 (16F73)","action":"deny","target":["com.apple.coresymbolicationd"],"hardware":" Mac","platform_binary":"yes","profile":"unknown","process":"IDECacheDeleteAp","o p":"mach-lookup"}

20 mai 2017 à 11h24

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Question : Thunderbolt disk very slow after 10.12.5 update