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Date: Tue, 18 Sep 2007 21:17:14 +0200
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Cc: Daniel Eischen <deischen@freebsd.org>, Kip Macy <kip.macy@gmail.com>,
	performance@freebsd.org, freebsd-java@freebsd.org
Subject: Re: Massive performance loss from OS::sleep hack
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Kurt Miller wrote:
> David Xu confirmed for me that pthread_yield() does give some
> time to lower priority threads on 7.0 using thr. Attached and inline
> are two patches for the 1.5 port that is how I suggest the issue be
> addressed.
> 
> For 7.0 and up default UseThreadPriorities to true and always
> use pthread_yield(). For < 7.0 default UseThreadPriorities to
> false and conditionally use pthread_yield()/os_sleep(). User's
> can toggle UseThreadPriorities with the command line argument
> -XX:+UseThreadPriorities

Do we know that 6.x requires the old behaviour?  Maybe it can default to 
on there too.  Otherwise this looks good to my eyeball (but the 
DEFAULT_LD_LIBRARY_PATH change looks unrelated)

-#define DEFAULT_LD_LIBRARY_PATH "/usr/lib" /* See ld.so.1(1) */
+#define DEFAULT_LD_LIBRARY_PATH "/usr/lib:/usr/local/lib" /* See 
ld.so.1(1)

Kris