[erlang-questions] is Linux's clock_gettime still "not stable" enough for Erlang?
Wed May 13 22:29:26 CEST 2009
I am seeing issues with this as well. I have some C++ code that uses
clock_gettime and it compiles and seems to work properly. But when I
configure Erlang it complains of it being unstable. I have tried a
couple things to hack around it and force it to be enabled but it didn't
seem to work. Any suggestions on this would be helpful.
mats cronqvist wrote:
> Adam Kocoloski <> writes:
>> Hi, it seems to me that cpu_timestamp tracing is automatically
>> disabled on Linux. configure spits out
>>> checking if clock_gettime can be used to get process CPU time... not
>>> stable, disabled
>> and in aclocal.m4 I see
>>> case $host_os in
>>> AC_MSG_RESULT([not stable, disabled])
>> I'm wondering what the rationale was behind that, and in particular
>> whether newer kernels might have fixed the problem. Does anyone
>> around here know a little more of the backstory? Best,
> I'm not really familiar with this, so the following is at best partly
> configure checks for a syscall;
> On linuxen, this needs support from hardware, the kernel and libc.
> E.g. on debian, with a 2.6 kernel, on i686 HW, you need to install
> libc6-i686. That will give you a variant of clock_gettime that is
> deemed "stable" by configure.
> erlang-questions mailing list
Name: Joseph A. Williams
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