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* [Bug libstdc++/98680] New: Several 30_threads tests are flaky
@ 2021-01-14 12:33 ro at gcc dot gnu.org
2021-01-14 12:33 ` [Bug libstdc++/98680] " ro at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: ro at gcc dot gnu.org @ 2021-01-14 12:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98680
Bug ID: 98680
Summary: Several 30_threads tests are flaky
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Target: i386-pc-solaris2.11, sparc-sun-solaris2.11,
i686-apple-darwin*, x86_64-apple-darwin*,
hppa2.0w-hp-hpux11.11
Several 30_threads tests are flaky on Solaris, more often on Solaris/x86 but
also on SPARC:
For the last couple of days, the counts are like this:
11 30_threads/barrier/arrive_and_wait.cc execution test
11 30_threads/barrier/arrive_and_wait.cc execution test program timed out.
1 30_threads/barrier/arrive.cc execution test
1 30_threads/barrier/arrive.cc execution test program timed out.
20 30_threads/barrier/completion.cc execution test
20 30_threads/barrier/completion.cc execution test program timed out.
14 30_threads/latch/3.cc execution test
14 30_threads/latch/3.cc execution test program timed out.
1 30_threads/semaphore/try_acquire_for.cc execution test
1 30_threads/semaphore/try_acquire_for.cc execution test program timed
out.
5 30_threads/semaphore/try_acquire_until.cc execution test
5 30_threads/semaphore/try_acquire_until.cc execution test program timed
out.
At least Darwin and HP-UX are likewise affected; I haven't looked closer for
possible others.
As an example, I ran arrive_and_wait.exe for ca. 100 times with the following
timing:
93 real 0.01
1 real 0.73
1 real 0.95
1 real 1.03
1 real 1:13.00
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98680] Several 30_threads tests are flaky
2021-01-14 12:33 [Bug libstdc++/98680] New: Several 30_threads tests are flaky ro at gcc dot gnu.org
@ 2021-01-14 12:33 ` ro at gcc dot gnu.org
2021-01-14 13:02 ` redi at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: ro at gcc dot gnu.org @ 2021-01-14 12:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98680
Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |11.0
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98680] Several 30_threads tests are flaky
2021-01-14 12:33 [Bug libstdc++/98680] New: Several 30_threads tests are flaky ro at gcc dot gnu.org
2021-01-14 12:33 ` [Bug libstdc++/98680] " ro at gcc dot gnu.org
@ 2021-01-14 13:02 ` redi at gcc dot gnu.org
2021-01-14 13:34 ` ro at CeBiTec dot Uni-Bielefeld.DE
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2021-01-14 13:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98680
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2021-01-14
CC| |rodgertq at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, as noted in Bug 97936 comment 12.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98680] Several 30_threads tests are flaky
2021-01-14 12:33 [Bug libstdc++/98680] New: Several 30_threads tests are flaky ro at gcc dot gnu.org
2021-01-14 12:33 ` [Bug libstdc++/98680] " ro at gcc dot gnu.org
2021-01-14 13:02 ` redi at gcc dot gnu.org
@ 2021-01-14 13:34 ` ro at CeBiTec dot Uni-Bielefeld.DE
2021-04-27 11:40 ` jakub at gcc dot gnu.org
2021-04-27 13:05 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: ro at CeBiTec dot Uni-Bielefeld.DE @ 2021-01-14 13:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98680
--- Comment #2 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
I've just ran arrive_and_wait.exe a 1000 times, and (at least so far)
one instance not only didn't complete within the testsuite's 5 minute
timeout, but hang for an hour, so probably deadlocked with this stack
trace:
18570: ./arrive_and_wait.exe
------------ lwp# 1 / thread# 1 ---------------
fe272989 lwp_park (0, 0, 0)
fe26aca7 cond_wait_queue (8062e5c, 8062e44, 0, fe26b22e) + 67
fe26b2ab __cond_wait (8062e5c, 8062e44, feffd938, fe26b2f6) + 8b
fe26b304 cond_wait (8062e5c, 8062e44, 0, fe26b34c) + 24
fe26b361 pthread_cond_wait (8062e5c, 8062e44, c70f6907, 8051bdd, fe432a74,
fe60dc18) + 21
08051c7c ???????? (feffd9f0, feffd9fd, feffda04, 805221a)
08052351 main (feffdb3c, feffda34, 8051a1d) + 1e1 (arrive_and_wait.cc:43)
08051986 _start (1, feffdbb8, 0, feffdbce, feffdbee, feffdc08) + 46
------------ lwp# 2 / thread# 2 ---------------
fe272989 lwp_park (0, 0, 0)
fe26aca7 cond_wait_queue (8062e5c, 8062e44, 0, fe26b22e) + 67
fe26b2ab __cond_wait (8062e5c, 8062e44, fe09ee98, fe26b2f6) + 8b
fe26b304 cond_wait (8062e5c, 8062e44, b803fa4, fe26b34c) + 24
fe26b361 pthread_cond_wait (8062e5c, 8062e44, c70f6907, 8051bdd, fe0c51d8,
1000000) + 21
08051c7c ???????? (feffd9f0, feffd9fd, fe269c02, 8051ee3)
08052034
std::thread::_State_impl<std::thread::_Invoker<std::tuple<main::{lambda()#1}> >
>::_M_run() (8067d28, 0, 0, 8, 200, 7) + 184 (arrive_and_wait.cc:40)
fe516a2d execute_native_thread_routine (8067d28, fe2c3000, fe09efc8, fe272587)
+ 1d (unique_ptr.h:85)
fe2725db _thrp_setup (fe2f0240) + 9b
fe272930 _lwp_start (0, 0, 0, 0, 0, 0)
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98680] Several 30_threads tests are flaky
2021-01-14 12:33 [Bug libstdc++/98680] New: Several 30_threads tests are flaky ro at gcc dot gnu.org
` (2 preceding siblings ...)
2021-01-14 13:34 ` ro at CeBiTec dot Uni-Bielefeld.DE
@ 2021-04-27 11:40 ` jakub at gcc dot gnu.org
2021-04-27 13:05 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jakub at gcc dot gnu.org @ 2021-04-27 11:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98680
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|11.0 |11.2
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 11.1 has been released, retargeting bugs to GCC 11.2.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libstdc++/98680] Several 30_threads tests are flaky
2021-01-14 12:33 [Bug libstdc++/98680] New: Several 30_threads tests are flaky ro at gcc dot gnu.org
` (3 preceding siblings ...)
2021-04-27 11:40 ` jakub at gcc dot gnu.org
@ 2021-04-27 13:05 ` redi at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu.org @ 2021-04-27 13:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98680
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|11.2 |11.0
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This should be fixed now, please reopen if not.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-04-27 13:05 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2021-01-14 12:33 [Bug libstdc++/98680] New: Several 30_threads tests are flaky ro at gcc dot gnu.org
2021-01-14 12:33 ` [Bug libstdc++/98680] " ro at gcc dot gnu.org
2021-01-14 13:02 ` redi at gcc dot gnu.org
2021-01-14 13:34 ` ro at CeBiTec dot Uni-Bielefeld.DE
2021-04-27 11:40 ` jakub at gcc dot gnu.org
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