I have an Ubuntu VM that has 6 out of 8 processors at 60% exec Cap.
lately I've been experiencing slow down on the VM, I looked it up and came across This Answer.
This is the output of when I attached strace to Gnome-Shell's PID:
ubumtu1@ubumtu1-VirtualBox:~$ sudo strace -c -p 1223
strace: Process 1223 attached
^Cstrace: Process 1223 detached
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
93.06 2.655894 168 15732 213 futex
2.64 0.075291 34 2160 getpid
0.92 0.026215 3 6699 poll
0.89 0.025532 4 5915 write
0.76 0.021766 1 13325 10932 recvmsg
0.50 0.014290 3 3711 ioctl
0.32 0.009057 20 445 munmap
0.28 0.008091 3 2612 sendmsg
0.20 0.005672 1 4246 read
0.18 0.005264 526 10 close
0.10 0.002994 3 898 writev
0.07 0.001928 1 1287 epoll_wait
0.05 0.001537 1 778 mprotect
0.01 0.000346 4 74 mmap
0.00 0.000062 6 10 newfstatat
0.00 0.000060 4 14 setxattr
0.00 0.000031 3 10 fcntl
0.00 0.000006 1 6 getrusage
0.00 0.000003 0 8 2 recvfrom
0.00 0.000003 3 1 restart_syscall
------ ----------- ----------- --------- --------- ----------------
100.00 2.854042 49 57941 11147 total
I'm not sure what I'm looking for but what I understand so far is the problem comes from futex&recvmsg having high calls and errors and i'm not sure how to fix it.
