1

I have a Yosemite Mac Mini with performance problems. When looking at the disk activity with opensnoop I noticed that automount is performing tons of accesses as follows

  UID    PID COMM          FD PATH
    0   1124 automountd     4 /etc/auto_home
    0   1124 automountd     6 /etc/auto_home
    0  55536 od_user_homes   5 /System/Library/OpenDirectory/request-schema.plist
    0  55536 od_user_homes   7 /usr/libexec
    0  55536 od_user_homes   7 /usr/libexec
    0  55536 od_user_homes   7 /usr/libexec/od_user_homes
    0   1124 automountd     4 /etc/auto_home
    0   1124 automountd     6 /etc/auto_home
    0   1124 automountd     6 /usr/libexec/od_user_homes
  501    464 syncdefaultsd   4 /Users/corti/Library/SyncedPreferences/.dat01d0.559
    0   1124 automountd     6 /usr/libexec/od_user_homes
    0     58 opendirectoryd   9 /var/db/dslocal/nodes//Default/users/corti.plist
    0  55537 od_user_homes   5 /System/Library/OpenDirectory/request-schema.plist
    0  55537 od_user_homes   7 /usr/libexec
    0  55537 od_user_homes   7 /usr/libexec
    0  55537 od_user_homes   7 /usr/libexec/od_user_homes
    0     58 opendirectoryd   9 /var/db/dslocal/nodes//Default/users/corti.plist
    0  55538 od_user_homes   5 /System/Library/OpenDirectory/request-schema.plist
    0  55538 od_user_homes   7 /usr/libexec
    0  55538 od_user_homes   7 /usr/libexec/od_user_homes
    0  55539 od_user_homes   5 /System/Library/OpenDirectory/request-schema.plist
    0  55539 od_user_homes   7 /usr/libexec
    0  55539 od_user_homes   7 /usr/libexec
    0   1124 automountd     4 /etc/auto_home
    0   1124 automountd     6 /etc/auto_home
    0   1124 automountd     6 /usr/libexec/od_user_homes
    0  55540 od_user_homes   5 /System/Library/OpenDirectory/request-schema.plist
    0  55540 od_user_homes   7 /usr/libexec
    0  55540 od_user_homes   7 /usr/libexec
    0   1124 automountd     4 /etc/auto_home
    0   1124 automountd     6 /etc/auto_home
    0   1124 automountd     6 /usr/libexec/od_user_homes
    0  55541 od_user_homes   5 /System/Library/OpenDirectory/request-schema.plist
    0  55541 od_user_homes   7 /usr/libexec
    0  55541 od_user_homes   7 /usr/libexec
    0  55541 od_user_homes   7 /usr/libexec/od_user_homes

Hundreds of access per second. Is this normal? What could be wrong?

Improve this question
6
  • Please more fully describe your Open Directory networking setup: number of clients/servers & Mac OS X versions on each machine. How many volumes are being served?
    – IconDaemon
    Commented Dec 21, 2014 at 16:52
  • @IconDaemon I have one single machine and never configured anything special. Where should I look?
    – Matteo
    Commented Dec 21, 2014 at 16:58
  • If this is a stand-alone machine, then things are very odd. In System Preferences > Users & Groups > Login Options, click the Network Account Server: Join button. In the drop-down sheet, click the Open Directory Utility... button. Click the Lock icon and authenticate. Open and inspect each service. Active Directory: No Active Directory Domain should be defined; LDAPv3: Show options and there should be no configurations defined; NIS No Domain name should be defined. If you find any servers defined, delete them.
    – IconDaemon
    Commented Dec 21, 2014 at 17:18
  • @IconDaemon Server dropdown is empty. The Directory Utility shows: AD (Forest automatic, and no domain), LDAP empty and NIS empty. As far as I know there are no directory servers that could be automatically discovered: it's a home network with private addresses.
    – Matteo
    Commented Dec 21, 2014 at 17:18
  • Perhaps the file /System/Library/OpenDirectory/request-schema.plist is corrupted somehow. Try moving it out of its directory and restart. Yosemite may try to recreate it.
    – IconDaemon
    Commented Dec 21, 2014 at 17:39

1 Answer 1

Reset to default
0

It seems that it was a combination of Dropbox and broken symlinks (see opendirectoryd consumes 40% of CPU and opendirectoryd taking up 1/4 of the cpu and driving fans crazy on MacBook Air).

I recently moved some old files from a Linux machine to my Mac Mini with around 10 broken symlinks to /home/.../ (in a Dropbox synchronized directory). Dropbox was causing opendirectoryd to continuously trying to mount /home/.

I removed the broken links and the machine seems now stable.

Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .