See the same bug on my HP Spectre x360 15t.
plymouthd consistently consumes over 20% CPU resources while mostly
waiting:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
487 root 20 0 172488 45328 9900 R 22.6 0.1 156:40.10 plymouthd
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
➜ time sudo strace -p487 -c
strace: Process 487 attached
^Cstrace: Process 487 detached
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
97.29 0.012121 2 5542 epoll_wait
1.47 0.000183 6 31 write
0.80 0.000100 3 31 read
0.44 0.000055 2 31 31 sendto
------ ----------- ----------- --------- --------- ----------------
100.00 0.012459 5635 31 total
sudo strace -p487 -c 0.14s user 0.29s system 2% cpu 19.240 total
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https://bugs.launchpad.net/bugs/1766095
Title:
plymouthd constantly uses 5% of CPU
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