Messages in this thread | | | Subject | Re: [PATCH 0/6] IO context sharing | From | Peter Zijlstra <> | Date | Tue, 22 Jan 2008 15:49:31 +0100 |
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On Tue, 2008-01-22 at 10:49 +0100, Jens Axboe wrote: > Hi, > > Today io contexts are per-process and define the (surprise) io context > of that process. In some situations it would be handy if several > processes share an IO context. With syslets it's especially crucial that > the threads working on behalf of the parent process are seen as the same > IO context. That goes from both a fairness and performance point of > view, since IO schedulers like AS and CFQ base decisions on what the > IO context state is. This patchset adds support for processes sharing a > single io context and also adds a CLONE_IO flag to denote sharing of > IO context.
Are you planning on extending this to a hierarchical CFQ for cgroups, or just giving the IO context to a cgroup?
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