Messages in this thread | | | Subject | Re: [PATCH] irq/affinity: Assign all CPUs a vector | From | Sagi Grimberg <> | Date | Wed, 29 Mar 2017 20:15:50 +0300 |
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> The number of vectors to assign needs to be adjusted for each node such > that it doesn't exceed the number of CPUs in that node. This patch > recalculates the vector assignment per-node so that we don't try to > assign more vectors than there are CPUs. When that previously happened, > the cpus_per_vec was calculated to be 0, so many vectors had no CPUs > assigned. This then goes on to fail to allocate descriptors due to > empty masks, leading to an unoptimal spread.
Can you give a specific (numeric) example where this happens? I'm having a little trouble following the logical change here.
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