Date: Fri, 11 Feb 2005 13:47:53 +0100 From: Joel Dahl <joel@automatvapen.se> To: Mipam <mipam@ibb.net> Cc: freebsd-stable@freebsd.org Subject: Re: using ADAPTIVE_MUTEXES savely? Message-ID: <1108126073.486.5.camel@dude.automatvapen.se> In-Reply-To: <Pine.BSO.4.56.0502111241130.31006@ux11.ltcm.net> References: <Pine.BSO.4.56.0502111241130.31006@ux11.ltcm.net>
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On Fri, 2005-02-11 at 12:44 +0100, Mipam wrote: > Hi, > > Does anybody run with the kernel option ADAPTIVE_MUTEXES > in RELENG_5 yet? Is it safe to use or should be used with care? There is no ADAPTIVE_MUTEXES option in RELENG_5 AFAIK, since it's enabled by default. You can however use NO_ADAPTIVE_MUTEXES to disable it. >From src/sys/conf/NOTES: " # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin # if the thread that currently owns the mutex is executing on another # CPU. This behaviour is enabled by default, so this option can be used # to disable it. options NO_ADAPTIVE_MUTEXES " -- Joel
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