Possible bug in Nagios 2.12?

[Thomas Guyot-Sionnest]

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Steven D. Morrey wrote:
>> That's a very good idea (replacing sleep(1) with sched_yield()). Just
>> make sure it keeps on working on AIX and Solaris and stuff like that,
>> where Nagios compiles and runs just fine today.
> 
>> I'd prefer if you did it with a helper function to make it easier to
>> support various operating systems that need it without duplicating a
>> lot of code.
> 
> I've attached a patch and am seeking comments.
> It won't cure cancer but if you do have non-parallel checks it may reduce your overall latency :)

I looked at the sched_yield() man page and found the following statement:

POSIX systems on which sched_yield() is available define
_POSIX_PRIORITY_SCHEDULING in <unistd.h>.

That would make is work on more systems. My Solaris 10 server has it.


BTW, haven't looked deeply at the issue but my other post about
semaphores could be based on a wrong understanding of that issue - I
thought nagios was sleeping until all checks are done to run an
unparalized check, though it seems to be broader than that.

- --
Thomas
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