I've no time to help with this, I'm sorry :(
-a On 4 February 2016 at 05:00, Slawa Olhovchenkov <s...@zxy.spb.ru> wrote: > On Tue, Feb 02, 2016 at 11:44:47PM +0300, Slawa Olhovchenkov wrote: > >> On Thu, Oct 22, 2015 at 11:24:53AM -0700, Luigi Rizzo wrote: >> >> > On Thu, Oct 22, 2015 at 11:12 AM, Adrian Chadd <adrian.ch...@gmail.com> >> > wrote: >> > > On 22 October 2015 at 09:35, Slawa Olhovchenkov <s...@zxy.spb.ru> wrote: >> > >> On Sun, Oct 18, 2015 at 07:45:52PM -0700, Adrian Chadd wrote: >> > >> >> > >>> Heh, file a bug with luigi; it should be defined better inside netmap >> > >>> itself. >> > >> >> > >> I am CC: luigi. >> > >> >> > >> Next question: do kevent RX/TX sync? >> > >> In my setup I am need to manual NIOCTXSYNC/NIOCRXSYNC. >> > > >> > > Hi, >> > > >> > > Nope. kqueue() doesn't do the implicit sync like poll() does; it's >> > > just the notification path. >> > >> > actually not. When the file descriptor is registered there >> > is an implicit sync, and there is another one when an event >> > is posted for the file descriptor. >> > >> > unless there are bugs, of course. >> >> I found strange behaivor: >> >> 1. open netmap and register in main thread >> 2. kevent register in different thread >> 3. result: got event by kevent but no ring sinc (all head,tail,cur >> still 0). >> >> Is this normal? Or is this bug? >> >> open and registering netmap in same thread as kevent resolve this. > > Also, kevent+netmap deadlocked for me: > > PID TID COMM TDNAME KSTACK > 1095 100207 addos - mi_switch+0xe1 > sleepq_catch_signals+0xab sleepq_timedwait_sig+0x10 _sleep+0x238 > kern_nanosleep+0x10e sys_nanosleep+0x51 amd64_syscall+0x40f Xfast_syscall+0xfb > 1095 100208 addos worker#0 mi_switch+0xe1 > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d kern_kevent+0x401 > sys_kevent+0x12a amd64_syscall+0x40f Xfast_syscall+0xfb > 1095 100209 addos worker#1 mi_switch+0xe1 > turnstile_wait+0x42a __mtx_lock_sleep+0x26b knote+0x38 freebsd_selwakeup+0x8b > netmap_notify+0x55 netmap_pipe_txsync+0x156 netmap_poll+0x400 > netmap_knrw+0x6e kqueue_register+0x799 kern_kevent+0x158 sys_kevent+0x12a > amd64_syscall+0x40f Xfast_syscall+0xfb > 1095 100210 addos worker#2 mi_switch+0xe1 > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d kern_kevent+0x401 > sys_kevent+0x12a amd64_syscall+0x40f Xfast_syscall+0xfb > 1095 100211 addos worker#NOIP mi_switch+0xe1 > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d kern_kevent+0x401 > sys_kevent+0x12a amd64_syscall+0x40f Xfast_syscall+0xfb > 1095 100212 addos balancer mi_switch+0xe1 > turnstile_wait+0x42a __mtx_lock_sleep+0x26b knote+0x38 freebsd_selwakeup+0x8b > netmap_notify+0x2a netmap_pipe_rxsync+0x54 netmap_poll+0x774 netmap_knrw+0x6e > kern_kevent+0x5cc sys_kevent+0x12a amd64_syscall+0x40f Xfast_syscall+0xfb _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
