Messages in this thread | | | Subject | Re: [patch v3]numa: add a sysctl to control interleave allocation granularity from each node to improve I/O performance | From | Shaohua Li <> | Date | Mon, 09 Jan 2012 15:31:52 +0800 |
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On Thu, 2011-12-15 at 09:27 +0800, Shaohua Li wrote: > On Thu, 2011-12-15 at 01:53 +0800, Andi Kleen wrote: > > > That's what I want to avoid letting each apps to explicitly do it, it's > > > a lot of burden. > > > > Usually apps that set NUMA policy can change it. Most don't anyways. > > If it's just a script with numactl it's easily changed. > Hmm, why should apps set different granularity? the granularity change > is to speed up I/O, which should have the same value for all apps. > > > > That's true only workload with heavy I/O wants this. but I don't expect > > > it will harm other workloads. > > > > How do you know? > I can't imagine how it could harm. Some arches can use big pages, big > granularity should already been tested for years. ping ...
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