In 60 seconds, one can observe: % time seconds usecs/call calls errors syscall ------ ----------- ----------- --------- --------- ---------------- 44.51 2.250000 2139 1052 poll 28.03 1.416574 366 3871 epoll_wait 24.33 1.230000 10250 120 rt_sigtimedwait 2.77 0.140000 70000 2 restart_syscall 0.26 0.013026 2 6306 fcntl64 0.04 0.002036 1 3153 3153 connect 0.01 0.000655 0 3213 close 0.01 0.000607 0 3213 socket 0.01 0.000529 0 7134 clock_gettime 0.01 0.000520 1 1026 write 0.01 0.000352 0 1038 16 read 0.00 0.000246 0 985 recvfrom 0.00 0.000098 1 120 madvise 0.00 0.000000 0 54 ioctl 0.00 0.000000 0 6 gettimeofday 0.00 0.000000 0 120 clone 0.00 0.000000 0 25 mprotect 0.00 0.000000 0 1 writev 0.00 0.000000 0 1 sched_yield 0.00 0.000000 0 120 rt_sigprocmask 0.00 0.000000 0 15 5 futex 0.00 0.000000 0 6 bind 0.00 0.000000 0 6 getsockname 0.00 0.000000 0 12 sendto 0.00 0.000000 0 77 13 recvmsg 0.00 0.000000 0 120 set_robust_list ------ ----------- ----------- --------- --------- ---------------- 100.00 5.054643 31796 3187 total
The 3153 failed connects are to named sockets that don't exist. That's a rate of 52 PER SECOND. This is rather ridiculous, we are meant to be trying to make a low power phone last and not drain the battery on this kind of rapid polling. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1364464 Title: unity8-dash has a thread that is polling rather rapidly on epoll wait To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-scopes-api/+bug/1364464/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
