From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Mosberger Date: Mon, 11 Nov 2002 21:21:34 +0000 Subject: [Linux-ia64] RE: +AFs-Linux-ia64+AF0- reader-writer livelock proble Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> On Mon, 11 Nov 2002 14:36:38 -0600, "Van Maren, Kevin" said: Van> I have not looked at this, but I don't believe it is the right Van> way to solve the problem: users who +AF8-need+AF8- to use all Van> the CPUs for computation would be punished just to work around Van> a kernel implementation issue: that's like saying don't allow Van> processes to allocate virtual memory because if the VM is Van> over-committed by X amount the kernel deadlocks. Van> It would be a bad hack to limit the system-call rate just to Van> prevent livelock. Certainly. I didn't suggest PRM as a way to _solve_ the livelock problem, but since Mario asked for a method to cap CPU utilization, I mentiond it. --david