Date: Wed, 15 Dec 2010 09:41:06 +0800 From: David Xu <davidxu@freebsd.org> To: John Baldwin <jhb@freebsd.org> Cc: arch@freebsd.org, Sergey Babkin <babkin@verizon.net> Subject: Re: Realtime thread priorities Message-ID: <4D081CB2.80200@freebsd.org> In-Reply-To: <4D081C7C.5040407@freebsd.org> References: <201012101050.45214.jhb@freebsd.org> <201012130927.26815.jhb@freebsd.org> <4D06C8B0.1060409@freebsd.org> <201012140756.52926.jhb@freebsd.org> <4D081C7C.5040407@freebsd.org>
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> You still don't answer me about how to avoid a time-sharing thread > holding a critical kernel resource which preempted by a user RT thread, > and later the RT thread requires the resource, but the time-sharing > thread has no chance to run because another RT thread is dominating > the CPU because it is doing CPU bound work, result is deadlock, even if > you know you trust your RT process, there are many code which were not > written by you, > >
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