Messages in this thread | | | Date | Fri, 9 Jul 2021 11:16:14 +0100 | From | "Russell King (Oracle)" <> | Subject | Re: [bug report] iommu_dma_unmap_sg() is very slow then running IO from remote numa node |
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On Fri, Jul 09, 2021 at 04:38:09PM +0800, Ming Lei wrote: > I observed that NVMe performance is very bad when running fio on one > CPU(aarch64) in remote numa node compared with the nvme pci numa node.
Have you checked the effect of running a memory-heavy process using memory from node 1 while being executed by CPUs in node 0?
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