rtorrent frozen all the time for about 4/5 seconds each time

[djdeath]

I keep having rtorrent blocking.
Each time I attach gdb to see where it's blocked this the backtraces I get from the different thread :

(gdb) thread apply all backtrace

Thread 3 (Thread 0x7f2bab462700 (LWP 2488)):
#0 0x00007f2baec811f3 in epoll_wait ()

at ../sysdeps/unix/syscall-template.S:81

#1 0x00007f2bb0412dd5 in torrent::PollEPoll::poll(int) ()

from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#2 0x00007f2bb0412f4d in torrent::PollEPoll::do_poll(long, int) ()

from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#3 0x00007f2bb0449266 in torrent::thread_base::event_loop(torrent::thread_base*) () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#4 0x00007f2baef4d062 in start_thread (arg=0x7f2bab462700)

at pthread_create.c:312

#5 0x00007f2baec80c1d in clone ()

at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f2baab60700 (LWP 2489)):
#0 0x00007f2baec811f3 in epoll_wait ()

at ../sysdeps/unix/syscall-template.S:81

#1 0x00007f2bb0412dd5 in torrent::PollEPoll::poll(int) ()

from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#2 0x00007f2bb0412f4d in torrent::PollEPoll::do_poll(long, int) ()

from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#3 0x00007f2bb0449266 in torrent::thread_base::event_loop(torrent::thread_base*---Type to continue, or q to quit---

) () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#4 0x00007f2baef4d062 in start_thread (arg=0x7f2baab60700)

at pthread_create.c:312

#5 0x00007f2baec80c1d in clone ()

at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f2bb1191740 (LWP 2487)):
#0 0x00007f2baec5227d in nanosleep () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f2baec7a514 in usleep (useconds=)

at ../sysdeps/unix/sysv/linux/usleep.c:32

#2 0x00007f2bb04491a5 in torrent::thread_base::interrupt() ()

from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#3 0x00007f2bb044f5fd in ?? () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#4 0x00007f2bb0479f40 in ?? () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#5 0x00007f2bb0474797 in ?? () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#6 0x00007f2bb048dd36 in ?? () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#7 0x00007f2bb0495ce2 in ?? () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#8 0x00007f2bb0412eb7 in torrent::PollEPoll::perform() ()

from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#9 0x00007f2bb0412f62 in torrent::PollEPoll::do_poll(long, int) ()

from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#10 0x00007f2bb0449266 in torrent::thread_base::event_loop(torrent::thread_base*) () from /usr/lib/x86_64-linux-gnu/libtorrent.so.14
#11 0x000000000041476a in ?? ()
#12 0x00007f2baebbcb45 in __libc_start_main (main=0x411f60, argc=1,

argv=0x7fff438be708, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7fff438be6f8) at libc-start.c:287

#13 0x0000000000414d55 in ?? ()
#14 0x00007fff438be6f8 in ?? ()
#15 0x000000000000001c in ?? ()
#16 0x0000000000000001 in ?? ()
#17 0x00007fff438c068e in ?? ()
#18 0x0000000000000000 in ?? ()

I can't think of any logical reason to call usleep() ever...

[rakshasa]

The polling interrupt code has been updated to use sockets, so your version is old.