260ffa12c0
passing -XX:+UseThreadPriorities. . Remove the os_sleep hack which was used on FreeBSD to make sure lower priority threads got time slices. Instead, just call pthread_yield(). On FreeBSD 7.x with libthr, this will still give lower priority threads some time (with the above flag turned on), although such behaviour is not guaranteed by POSIX. This boosts FreeBSD performance by 7-fold on an 8 core system, putting it on a par with Solaris (benchmarks by kris@). The Java standard and the JCK tests are somewhat contradictory on thread priority being guaranteed to work, and in this case the performance benefits appear to outweigh any possible side effects. . Pick up DEFAULT_LD_LIBRARY_PATH from the build environment rather than patching it into a file at build time. This simplifies the Makefile. Submitted by: Kurt Miller <kurt@intricatesoftware.com>
33 lines
922 B
C++
33 lines
922 B
C++
$FreeBSD$
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--- ../../hotspot/src/os/bsd/vm/os_bsd.cpp.orig Mon Sep 17 21:03:04 2007
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+++ ../../hotspot/src/os/bsd/vm/os_bsd.cpp Tue Sep 18 21:36:51 2007
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@@ -2271,13 +2271,7 @@
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if (thread->is_Java_thread()) {
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ThreadBlockInVM tbivm((JavaThread*) thread);
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-// BSDXXX: Only use pthread_yield here and below if the system thread
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-// scheduler gives time slices to lower priority threads when yielding.
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-#ifdef __FreeBSD__
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- os_sleep(MinSleepInterval, interruptible);
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-#else
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pthread_yield();
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-#endif
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#if SOLARIS
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// XXX - This code was not exercised during the Merlin RC1
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@@ -2297,13 +2291,7 @@
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return 0;
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}
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-// BSDXXX: Only use pthread_yield here and above if the system thread
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-// scheduler gives time slices to lower priority threads when yielding.
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-#ifdef __FreeBSD__
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- os_sleep(MinSleepInterval, interruptible);
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-#else
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pthread_yield();
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-#endif
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return 0;
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}
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