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New View the Bug / Feature Tracker

[6.12.8] Enabling IPv6 privacy extensions uses huge amounts of RAM

By Opal_06

· 319 views
  • Annoyance

Recently, I have been dealing with very high RAM usage on my Unraid server, without a clear cause to pin it down to. When all my docker containers and VMs are running, I'm getting as high as 28 out of 32 GBs of RAM. After shutting down all containers and VMs and disabling both docker and VM support in settings, the system still reports 20GB used:

  

root@home-server:~# free -h
               total        used        free      shared  buff/cache   available
Mem:            30Gi        20Gi       9.1Gi       652Mi       1.1Gi       9.1Gi
Swap:             0B          0B          0B

 

As this shows, it's not memory cache causing it, as the RAM is reported as actually used. Accounting for 4GB of ZFS arc, this left around 16GB used only for the OS and some plugins, which I found to be quite strange.

So I ran  

ps aux | awk '{print $6/1024 " MB\t\t" $11}' | sort -n

to get memory usage by process. This was its output (note it sorts from smallest to biggest, output is truncated at the beginning; in spoiler because of length):

Spoiler 
<continues with more dhcpcd processes>

4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.23828 MB        dhcpcd:
4.24219 MB        dhcpcd:
4.24219 MB        dhcpcd:
4.24219 MB        dhcpcd:
4.24219 MB        dhcpcd:
4.24219 MB        dhcpcd:
4.25 MB        dhcpcd:
4.25 MB        dhcpcd:
4.25391 MB        dhcpcd:
4.25391 MB        dhcpcd:
4.25781 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26172 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26562 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.26953 MB        dhcpcd:
4.27344 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28125 MB        dhcpcd:
4.28906 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.29297 MB        dhcpcd:
4.30859 MB        dhcpcd:
4.3125 MB        dhcpcd:
4.3125 MB        dhcpcd:
4.3125 MB        dhcpcd:
4.3125 MB        dhcpcd:
4.3125 MB        dhcpcd:
4.3125 MB        dhcpcd:
4.3125 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32422 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.32812 MB        dhcpcd:
4.33203 MB        dhcpcd:
4.33203 MB        dhcpcd:
4.33203 MB        dhcpcd:
4.33203 MB        dhcpcd:
4.33203 MB        dhcpcd:
4.33203 MB        dhcpcd:
4.34375 MB        dhcpcd:
4.34375 MB        dhcpcd:
4.34375 MB        dhcpcd:
4.34375 MB        dhcpcd:
4.34375 MB        dhcpcd:
4.34375 MB        dhcpcd:
4.35547 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.35938 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.36328 MB        dhcpcd:
4.37891 MB        dhcpcd:
4.37891 MB        dhcpcd:
4.38672 MB        dhcpcd:
4.39453 MB        dhcpcd:
4.39453 MB        dhcpcd:
4.39844 MB        dhcpcd:
4.39844 MB        dhcpcd:
4.40234 MB        dhcpcd:
4.40234 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.40625 MB        dhcpcd:
4.41016 MB        dhcpcd:
4.41016 MB        dhcpcd:
4.41016 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42188 MB        dhcpcd:
4.42578 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.43359 MB        dhcpcd:
4.44141 MB        dhcpcd:
4.44922 MB        dhcpcd:
4.45312 MB        dhcpcd:
4.45703 MB        dhcpcd:
4.46094 MB        dhcpcd:
4.46875 MB        dhcpcd:
4.46875 MB        dhcpcd:
4.46875 MB        dhcpcd:
4.46875 MB        dhcpcd:
4.47656 MB        dhcpcd:
4.47656 MB        dhcpcd:
4.47656 MB        dhcpcd:
4.47656 MB        dhcpcd:
4.47656 MB        dhcpcd:
4.47656 MB        dhcpcd:
4.47656 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48438 MB        dhcpcd:
4.48828 MB        dhcpcd:
4.49609 MB        dhcpcd:
4.5 MB        dhcpcd:
4.51172 MB        dhcpcd:
4.51562 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.51953 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53125 MB        dhcpcd:
4.53516 MB        dhcpcd:
4.53516 MB        dhcpcd:
4.54297 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.54688 MB        dhcpcd:
4.56641 MB        dhcpcd:
4.57422 MB        dhcpcd:
4.57812 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58203 MB        dhcpcd:
4.58984 MB        dhcpcd:
4.58984 MB        dhcpcd:
4.58984 MB        dhcpcd:
4.58984 MB        dhcpcd:
4.58984 MB        dhcpcd:
4.58984 MB        dhcpcd:
4.60938 MB        dhcpcd:
4.60938 MB        dhcpcd:
4.60938 MB        dhcpcd:
4.60938 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.62109 MB        dhcpcd:
4.64453 MB        dhcpcd:
4.64453 MB        dhcpcd:
4.64453 MB        dhcpcd:
4.64453 MB        dhcpcd:
4.64453 MB        dhcpcd:
4.64453 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65234 MB        dhcpcd:
4.65625 MB        dhcpcd:
4.66406 MB        dhcpcd:
4.67578 MB        /usr/sbin/rsyslogd
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.68359 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.71484 MB        dhcpcd:
4.73828 MB        dhcpcd:
4.74609 MB        dhcpcd:
4.74609 MB        dhcpcd:
4.74609 MB        dhcpcd:
4.74609 MB        dhcpcd:
4.74609 MB        dhcpcd:
4.74609 MB        dhcpcd:
4.74609 MB        dhcpcd:
4.75781 MB        dhcpcd:
4.75781 MB        dhcpcd:
4.76953 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.77734 MB        dhcpcd:
4.78906 MB        dhcpcd:
4.78906 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.80859 MB        dhcpcd:
4.82422 MB        dhcpcd:
4.82422 MB        dhcpcd:
4.82422 MB        dhcpcd:
4.83984 MB        dhcpcd:
4.83984 MB        dhcpcd:
4.83984 MB        dhcpcd:
4.83984 MB        dhcpcd:
4.83984 MB        dhcpcd:
4.83984 MB        dhcpcd:
4.83984 MB        dhcpcd:
4.83984 MB        dhcpcd:
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4.83984 MB        dhcpcd:
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4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
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4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.86328 MB        dhcpcd:
4.87109 MB        dhcpcd:
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4.87109 MB        dhcpcd:
4.89844 MB        dhcpcd:
4.91016 MB        dhcpcd:
4.91797 MB        dhcpcd:
4.91797 MB        dhcpcd:
4.91797 MB        dhcpcd:
4.91797 MB        dhcpcd:
4.92578 MB        dhcpcd:
4.92578 MB        dhcpcd:
4.92578 MB        dhcpcd:
4.92578 MB        dhcpcd:
4.92578 MB        dhcpcd:
4.92578 MB        dhcpcd:
4.93359 MB        dhcpcd:
4.94922 MB        dhcpcd:
4.94922 MB        dhcpcd:
4.98047 MB        dhcpcd:
4.98047 MB        dhcpcd:
4.98047 MB        dhcpcd:
4.98047 MB        dhcpcd:
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4.98047 MB        dhcpcd:
4.98047 MB        dhcpcd:
4.98047 MB        dhcpcd:
4.99609 MB        dhcpcd:
5.00781 MB        dhcpcd:
5.01562 MB        dhcpcd:
5.03125 MB        dhcpcd:
5.03125 MB        dhcpcd:
5.03125 MB        dhcpcd:
5.03125 MB        dhcpcd:
5.03906 MB        dhcpcd:
5.04297 MB        dhcpcd:
5.04297 MB        dhcpcd:
5.04297 MB        dhcpcd:
5.04297 MB        dhcpcd:
5.04297 MB        dhcpcd:
5.04297 MB        dhcpcd:
5.04297 MB        dhcpcd:
5.04688 MB        dhcpcd:
5.07812 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.09375 MB        dhcpcd:
5.12109 MB        dhcpcd:
5.12109 MB        dhcpcd:
5.13281 MB        dhcpcd:
5.13281 MB        dhcpcd:
5.13281 MB        dhcpcd:
5.13281 MB        dhcpcd:
5.13281 MB        dhcpcd:
5.44531 MB        dhcpcd:
6.35938 MB        /usr/sbin/smbd
7.77734 MB        sshd:
7.85547 MB        lsof
7.97266 MB        sshd:
8.83203 MB        -bash
8.9375 MB        /usr/sbin/smbd
9.19922 MB        php-fpm:
9.67578 MB        nginx:
10.1641 MB        /usr/sbin/winbindd
10.9023 MB        nginx:
11.6797 MB        /usr/sbin/winbindd
13.2695 MB        /usr/sbin/smbd
13.293 MB        /usr/bin/php
13.6953 MB        -bash
14.2344 MB        php-fpm:
14.2344 MB        php-fpm:
14.2383 MB        php-fpm:
14.375 MB        /usr/sbin/winbindd
14.625 MB        /usr/bin/php
28.7656 MB        /usr/bin/php
28.9492 MB        /usr/bin/php
29.3281 MB        /usr/bin/php
29.3633 MB        /usr/bin/php
29.6875 MB        /usr/bin/php
29.7227 MB        /usr/bin/php
29.7461 MB        /usr/bin/php
29.7891 MB        /usr/bin/php
30.082 MB        /usr/bin/php
30.2031 MB        /usr/bin/php
33.3516 MB        /usr/local/bin/shfs
125.398 MB        /usr/local/sbin/tailscaled

 

The OS spawned a huge amount of of `dhcpcd

processes. Since they all take about 4-5MB of RAM, this had severe impact on free RAM. Running `free -h` again after disabling the feature yielded the following result:

  

               total        used        free      shared  buff/cache   available
Mem:            30Gi       3.7Gi        26Gi       652Mi       848Mi        26Gi
Swap:             0B          0B          0B

 

This is much more in line with what I would expect. I don't know exactly why enabling IPv6 privacy extensions causes this, or if it is even expected behaviour (in this case users maybe should be warned about the resource impact), but I thought I'd report it since it took me a while to find the issue and maybe it will help someone else.

unraid-diagnostics-ipv6-privacy-high ram-usage.zip

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