High CPU usage of Self

[dram]

CPU usage of Self seems to be a bit high, especially if several outliners are opened in desktop.

Following are some strace output fragments:

1. VM without loading any snapshot:

1478326017.008976 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326017.009015 rt_sigreturn()        = 3
1478326017.009075 read(0, 0x91df27f, 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
1478326017.018939 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326017.018968 rt_sigreturn()        = 3
1478326017.019017 read(0, 0x91df27f, 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
1478326017.028920 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326017.028961 rt_sigreturn()        = 3
1478326017.029097 read(0, 0x91df27f, 1) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)

2. Loading morphic.snap, but without desktop open:

1478326125.006896 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326125.006964 rt_sigreturn()        = -1 EINTR (Interrupted system call)
1478326125.007076 select(0, NULL, NULL, NULL, NULL) = ? ERESTARTNOHAND (To be restarted if no handler)
1478326125.016918 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326125.016988 rt_sigreturn()        = -1 EINTR (Interrupted system call)
1478326125.017131 select(0, NULL, NULL, NULL, NULL) = ? ERESTARTNOHAND (To be restarted if no handler)
1478326125.026860 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326125.026889 rt_sigreturn()        = -1 EINTR (Interrupted system call)
1478326125.026960 select(0, NULL, NULL, NULL, NULL) = ? ERESTARTNOHAND (To be restarted if no handler)

3. Desktop opened:

1478326234.006793 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326234.006807 rt_sigreturn()        = -1 EINTR (Interrupted system call)
1478326234.006834 rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
1478326234.006861 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
1478326234.006876 gettimeofday({1478326234, 6880}, NULL) = 0
1478326234.006894 gettimeofday({1478326234, 6898}, NULL) = 0
1478326234.006911 gettimeofday({1478326234, 6915}, NULL) = 0
1478326234.006926 gettimeofday({1478326234, 6929}, NULL) = 0
1478326234.006973 gettimeofday({1478326234, 6976}, NULL) = 0
1478326234.006992 recvmsg(5, 0x914e584, 0) = -1 EAGAIN (Resource temporarily unavailable)
1478326234.007008 gettimeofday({1478326234, 7011}, NULL) = 0
1478326234.007042 gettimeofday({1478326234, 7046}, NULL) = 0
1478326234.007072 recvmsg(5, 0x914e594, 0) = -1 EAGAIN (Resource temporarily unavailable)
1478326234.007100 gettimeofday({1478326234, 7104}, NULL) = 0
1478326234.007116 gettimeofday({1478326234, 7119}, NULL) = 0
1478326234.007130 gettimeofday({1478326234, 7134}, NULL) = 0
1478326234.007147 recvmsg(5, 0x90ce904, 0) = -1 EAGAIN (Resource temporarily unavailable)
1478326234.007163 gettimeofday({1478326234, 7167}, NULL) = 0
1478326234.007180 select(0, NULL, NULL, NULL, NULL) = ? ERESTARTNOHAND (To be restarted if no handler)
1478326234.016810 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326234.016830 rt_sigreturn()        = -1 EINTR (Interrupted system call)
1478326234.016857 rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
1478326234.016885 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
1478326234.016904 gettimeofday({1478326234, 16907}, NULL) = 0
1478326234.016922 select(0, NULL, NULL, NULL, NULL) = ? ERESTARTNOHAND (To be restarted if no handler)
1478326234.026804 --- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
1478326234.026825 rt_sigreturn()        = -1 EINTR (Interrupted system call)
1478326234.026854 rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
1478326234.026884 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
1478326234.026901 gettimeofday({1478326234, 26905}, NULL) = 0
1478326234.026925 gettimeofday({1478326234, 26929}, NULL) = 0
1478326234.026945 gettimeofday({1478326234, 26949}, NULL) = 0
1478326234.026966 recvmsg(5, 0x90ce904, 0) = -1 EAGAIN (Resource temporarily unavailable)
1478326234.026993 gettimeofday({1478326234, 26997}, NULL) = 0
1478326234.027012 select(0, NULL, NULL, NULL, NULL) = ? ERESTARTNOHAND (To be restarted if no handler)