Messages in this thread | | | From | David Mosberger <> | Date | Fri, 8 Nov 2002 11:26:31 -0800 | Subject | Re: [Linux-ia64] reader-writer livelock problem |
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>>>>> On Fri, 8 Nov 2002 19:19:07 +0000, Matthew Wilcox <willy@debian.org> said:
Matthew> On Fri, Nov 08, 2002 at 12:05:30PM -0600, Van Maren, Kevin Matthew> wrote: >> Absolutely you should minimize the locking contention. However, >> that isn't always possible, such as when you have 64 processors >> contending on the same resource.
Matthew> if you've got 64 processors contending on the same Matthew> resource, maybe you need to split that resource up so they Matthew> can have a copy each. all that cacheline bouncing can't do Matthew> your numa boxes any good.
Matthew, please understand that this is NOT a performance problem. It's a correctness problem. If livelock can resolut from read-write locks, it's a huge security problem. Period.
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