Public bug reported:
trickle -d 100 -u 100 kmail
Kmail runs, but as soon as the trickle has to limit the bandwitch (so it
actually starts limiting) then kmail hangs fully (even the window does
not refresh).
killall kmail works.
Perhaps this is caused because kmail that was start "exits" (and some child or
something is running only)?
when running kmail,
kmail (pid=17635) is started for example, it spawns kmail (pid=17636), and also
spawns various kdeinit4: kio_imap4 [kdeinit]
Perhaps it causes the problem that not all of the processes have trickle
attached to them - or that trickel exists because original kmail exists,
but the childs still think a trickle is running.
Running trickled and then trickle kmail does not help. In such
scenario, killall trickled does not un-hang kmail.
ra...@lcwood(12:45:51)~$ trickled -d 50 -u 100 -w 32
ra...@lcwood(12:48:16)~$ trickle kmail
ra...@lcwood(12:48:31)~$ killall trickled
strace of kmail (done by strace -p `pidof kmail`)
mprotect(0x7fbd9c30e000, 4096, PROT_READ|PROT_WRITE) = 0
munmap(0x7fbda1a33000, 1052672) = 0
read(8, 0x21e0e34, 4096) = -1 EAGAIN (Resource temporarily
unavailable)
read(19, 0x22f7794, 4096) = -1 EAGAIN (Resource temporarily
unavailable)
fcntl(18, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(35, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(36, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(37, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
poll([{fd=3, events=POLLIN}, {fd=14, events=POLLIN|POLLPRI}, {fd=16,
events=POLLIN|POLLPRI}, {fd=17, events=POLLIN|POLLPRI}, {fd=18,
events=POLLIN|POLLPRI}, {fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21,
events=POLLIN}, {fd=22, events=POLLIN}, {fd=8, events=POLLIN}, {fd=5,
events=POLLIN}, {fd=24, events=POLLIN}, {fd=35, events=0}, {fd=36, events=0},
{fd=37, events=0}, {fd=38, events=0}], 16, 0) = 0 (Timeout)
read(8, 0x21e0e34, 4096) = -1 EAGAIN (Resource temporarily
unavailable)
madvise(0x7fbd9c026000, 3051520, MADV_DONTNEED) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2679, ...}) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2679, ...}) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2679, ...}) = 0
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
select(38, [], [], NULL, {3, 0}) = 0 (Timeout)
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
select(39, [38], [], NULL, NULL
after killall kmail the strace says:
) = ? ERESTARTNOHAND (To be restarted)
--- SIGTERM (Terminated) @ 0 (0) ---
rt_sigaction(SIGKILL, {SIG_DFL, [KILL], SA_RESTORER|SA_RESTART,
0x7f73a9007530}, {0x7fff53576650, [INT TRAP ABRT BUS], 0x1c18290 /* SA_??? */},
8) = -1 EINVAL (Invalid argument)
rt_sigaction(SIGTERM, {SIG_DFL, [TERM], SA_RESTORER|SA_RESTART,
0x7f73a9007530}, {0x4022e8, [TERM], SA_RESTORER|SA_RESTART, 0x7f73a9007530}, 8)
= 0
rt_sigaction(SIGHUP, {SIG_DFL, [HUP], SA_RESTORER|SA_RESTART, 0x7f73a9007530},
{0x4022e8, [HUP], SA_RESTORER|SA_RESTART, 0x7f73a9007530}, 8) = 0
write(2, "*** KMail got signal 15 (Exiting"..., 34) = 34
futex(0x29b7acc, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x29b7aa0, 4) = 2
futex(0x29d449c, FUTEX_WAIT_PRIVATE, 1, NULL) = 0
futex(0x29d4470, FUTEX_WAKE_PRIVATE, 1) = 0
writev(5, [{"l\1\1\1m\0\0\0}\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 144},
{"h\0\0\0type='signal',path='/KIO/Sch"..., 109}], 2) = 253
close(36) = 0
close(35) = 0
close(37) = 0
close(38) = 0
[...]
Actually, trickle seems to not start:
read(3, 0x11af050, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=3, events=POLLIN}], 1, 24961) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\4\1\1 \0\0\0\t\0\0\0\211\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 2048) =
192
read(3, 0x11af050, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=3, events=POLLIN}], 1, 24886) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\4\1\0018\0\0\0\n\0\0\0\211\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 2048)
= 216
read(3, 0x11af050, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=3, events=POLLIN}], 1, 24689) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\2\1\1\177\v\0\0003\0\0\0000\0\0\0\6\1s\0\7\0\0\0:1.1031\0"..., 2048)
= 2048
read(3, "<arg type=\"i\" direction=\"out\"/>\n"..., 2048) = 959
brk(0x11d6000) = 0x11d6000
writev(3, [{"l\1\0\1'\0\0\0\10\0\0\0\202\0\0\0\1\1o\0\20\0\0\0/MainApp"...,
152}, {"\0\0\0\0\37\0\0\0\0\0\0\v/home/rafal\0\0\0\1\377\377\377\377\0"...,
39}], 2) = 191
poll([{fd=3, events=POLLIN}], 1, 25000) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\2\1\1\4\0\0\0A\0\0\0000\0\0\0\6\1s\0\7\0\0\0:1.1031\0"..., 2048) = 68
read(3, 0x11c14b0, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
exit_group(0) = ?
because it exists almost instantly.
ii kmail 4:4.3.2-0ubuntu6
KDE Email client
ii trickle 1.07-7
user-space bandwidth shaper
** Affects: trickle (Ubuntu)
Importance: Undecided
Status: New
** Package changed: ubuntu => trickle (Ubuntu)
** Description changed:
trickle -d 100 -u 100 kmail
Kmail runs, but as soon as the trickle has to limit the bandwitch (so it
actually starts limiting) then kmail hangs fully (even the window does
not refresh).
killall kmail works.
Perhaps this is caused because kmail that was start "exits" (and some child
or something is running only)?
when running kmail,
kmail (pid=17635) is started for example, it spawns kmail (pid=17636), and
also spawns various kdeinit4: kio_imap4 [kdeinit]
Perhaps it causes the problem that not all of the processes have trickle
attached to them - or that trickel exists because original kmail exists,
but the childs still think a trickle is running.
Running trickled and then trickle kmail does not help. In such
scenario, killall trickled does not un-hang kmail.
ra...@lcwood(12:45:51)~$ trickled -d 50 -u 100 -w 32
ra...@lcwood(12:48:16)~$ trickle kmail
ra...@lcwood(12:48:31)~$ killall trickled
-
strace of kmail (done by strace -p `pidof kmail`)
mprotect(0x7fbd9c30e000, 4096, PROT_READ|PROT_WRITE) = 0
munmap(0x7fbda1a33000, 1052672) = 0
read(8, 0x21e0e34, 4096) = -1 EAGAIN (Resource temporarily
unavailable)
read(19, 0x22f7794, 4096) = -1 EAGAIN (Resource temporarily
unavailable)
fcntl(18, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(35, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(36, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(37, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
poll([{fd=3, events=POLLIN}, {fd=14, events=POLLIN|POLLPRI}, {fd=16,
events=POLLIN|POLLPRI}, {fd=17, events=POLLIN|POLLPRI}, {fd=18,
events=POLLIN|POLLPRI}, {fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21,
events=POLLIN}, {fd=22, events=POLLIN}, {fd=8, events=POLLIN}, {fd=5,
events=POLLIN}, {fd=24, events=POLLIN}, {fd=35, events=0}, {fd=36, events=0},
{fd=37, events=0}, {fd=38, events=0}], 16, 0) = 0 (Timeout)
read(8, 0x21e0e34, 4096) = -1 EAGAIN (Resource temporarily
unavailable)
madvise(0x7fbd9c026000, 3051520, MADV_DONTNEED) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2679, ...}) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2679, ...}) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=2679, ...}) = 0
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
select(38, [], [], NULL, {3, 0}) = 0 (Timeout)
fcntl(38, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK)
select(39, [38], [], NULL, NULL
-
after killall kmail the strace says:
-
) = ? ERESTARTNOHAND (To be restarted)
- --- SIGTERM (Terminated) @ 0 (0) ---
+ --- SIGTERM (Terminated) @ 0 (0) ---
rt_sigaction(SIGKILL, {SIG_DFL, [KILL], SA_RESTORER|SA_RESTART,
0x7f73a9007530}, {0x7fff53576650, [INT TRAP ABRT BUS], 0x1c18290 /* SA_??? */},
8) = -1 EINVAL (Invalid argument)
- rt_sigaction(SIGTERM, {SIG_DFL, [TERM], SA_RESTORER|SA_RESTART,
0x7f73a9007530}, {0x4022e8, [TERM], SA_RESTORER|SA_RESTART, 0x7f73a9007530}, 8)
= 0
- rt_sigaction(SIGHUP, {SIG_DFL, [HUP], SA_RESTORER|SA_RESTART,
0x7f73a9007530}, {0x4022e8, [HUP], SA_RESTORER|SA_RESTART, 0x7f73a9007530}, 8)
= 0
- write(2, "*** KMail got signal 15 (Exiting"..., 34) = 34
- futex(0x29b7acc, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x29b7aa0, 4) = 2
- futex(0x29d449c, FUTEX_WAIT_PRIVATE, 1, NULL) = 0
- futex(0x29d4470, FUTEX_WAKE_PRIVATE, 1) = 0
- writev(5, [{"l\1\1\1m\0\0\0}\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"...,
144}, {"h\0\0\0type='signal',path='/KIO/Sch"..., 109}], 2) = 253
- close(36) = 0
- close(35) = 0
- close(37) = 0
- close(38) = 0
+ rt_sigaction(SIGTERM, {SIG_DFL, [TERM], SA_RESTORER|SA_RESTART,
0x7f73a9007530}, {0x4022e8, [TERM], SA_RESTORER|SA_RESTART, 0x7f73a9007530}, 8)
= 0
+ rt_sigaction(SIGHUP, {SIG_DFL, [HUP], SA_RESTORER|SA_RESTART,
0x7f73a9007530}, {0x4022e8, [HUP], SA_RESTORER|SA_RESTART, 0x7f73a9007530}, 8)
= 0
+ write(2, "*** KMail got signal 15 (Exiting"..., 34) = 34
+ futex(0x29b7acc, FUTEX_CMP_REQUEUE_PRIVATE, 1, 2147483647, 0x29b7aa0, 4) = 2
+ futex(0x29d449c, FUTEX_WAIT_PRIVATE, 1, NULL) = 0
+ futex(0x29d4470, FUTEX_WAKE_PRIVATE, 1) = 0
+ writev(5, [{"l\1\1\1m\0\0\0}\0\0\0\177\0\0\0\1\1o\0\25\0\0\0/org/fre"...,
144}, {"h\0\0\0type='signal',path='/KIO/Sch"..., 109}], 2) = 253
+ close(36) = 0
+ close(35) = 0
+ close(37) = 0
+ close(38) = 0
[...]
-
Actually, trickle seems to not start:
read(3, 0x11af050, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=3, events=POLLIN}], 1, 24961) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\4\1\1 \0\0\0\t\0\0\0\211\0\0\0\1\1o\0\25\0\0\0/org/fre"..., 2048)
= 192
read(3, 0x11af050, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=3, events=POLLIN}], 1, 24886) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\4\1\0018\0\0\0\n\0\0\0\211\0\0\0\1\1o\0\25\0\0\0/org/fre"...,
2048) = 216
read(3, 0x11af050, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
poll([{fd=3, events=POLLIN}], 1, 24689) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\2\1\1\177\v\0\0003\0\0\0000\0\0\0\6\1s\0\7\0\0\0:1.1031\0"...,
2048) = 2048
read(3, "<arg type=\"i\" direction=\"out\"/>\n"..., 2048) = 959
brk(0x11d6000) = 0x11d6000
writev(3, [{"l\1\0\1'\0\0\0\10\0\0\0\202\0\0\0\1\1o\0\20\0\0\0/MainApp"...,
152}, {"\0\0\0\0\37\0\0\0\0\0\0\v/home/rafal\0\0\0\1\377\377\377\377\0"...,
39}], 2) = 191
poll([{fd=3, events=POLLIN}], 1, 25000) = 1 ([{fd=3, revents=POLLIN}])
read(3, "l\2\1\1\4\0\0\0A\0\0\0000\0\0\0\6\1s\0\7\0\0\0:1.1031\0"..., 2048) =
68
read(3, 0x11c14b0, 2048) = -1 EAGAIN (Resource temporarily
unavailable)
exit_group(0) = ?
because it exists almost instantly.
+
+
+ ii kmail 4:4.3.2-0ubuntu6
KDE Email client
+ ii trickle 1.07-7
user-space bandwidth shaper
--
Trickle does not work with kmail - hangs it
https://bugs.launchpad.net/bugs/531287
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