[Mono-dev] Busy loop in mono

[Jonathan Gagnon]

It seems like this bug
https://bugzilla.novell.com/show_bug.cgi?id=379602in mono 3.2.5.

I was fixed in mono 2.4 but it seems to have reappeared since then because
my process is using CPU at doing nothing and I noticed it gets worse if I
add threads (even if they do nothing). When I use strace on a process
running with mono 3.2.5, I get a similar output :

futex(0x9ce6520, FUTEX_WAIT, 81061, {0, 999009600}) = -1 ETIMEDOUT
(Connection timed out)
time(NULL)                              = 1391196463
futex(0x9ce6504, FUTEX_WAKE, 1)         = 0
gettimeofday({1391196463, 363628}, NULL) = 0
gettimeofday({1391196463, 363707}, NULL) = 0
time(NULL)                              = 1391196463
gettimeofday({1391196463, 363848}, NULL) = 0
time(NULL)                              = 1391196463
time(NULL)                              = 1391196463
clock_gettime(CLOCK_REALTIME, {1391196463, 364038031}) = 0
futex(0x9ce6520, FUTEX_WAIT, 81063, {0, 998961969}) = -1 ETIMEDOUT
(Connection timed out)
time(NULL)                              = 1391196464
futex(0x9ce6504, FUTEX_WAKE, 1)         = 0
gettimeofday({1391196464, 363500}, NULL) = 0
gettimeofday({1391196464, 363597}, NULL) = 0
time(NULL)                              = 1391196464
gettimeofday({1391196464, 363713}, NULL) = 0
time(NULL)                              = 1391196464
time(NULL)                              = 1391196464
clock_gettime(CLOCK_REALTIME, {1391196464, 363903927}) = 0

The same process doesn't use any cpu time when running on .NET.

Any idea what could cause this problem.  Has anyone else noticed this
problem?

Jonathan
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