[Bug nptl/4274] Performance issue: pthread_cond_signal() causes three context switches instead of one

[bugdal at aerifal dot cx]

http://sourceware.org/bugzilla/show_bug.cgi?id=4274

Rich Felker <bugdal at aerifal dot cx> changed:

           What    |Removed                     |Added
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                 CC|                            |bugdal at aerifal dot cx

--- Comment #12 from Rich Felker <bugdal at aerifal dot cx> 2012-09-19 08:54:35 UTC ---
Calling pthread_cond_signal without holding the mutex is perfectly valid and
cannot result in signals being lost unless the implementation is buggy (which
glibc may be; see bug #13165). What it can result in, however, is deviation
from the expected priority behavior guaranteed by the priority scheduling
options of POSIX.

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