nvme-multipath: round-robin I/O policy
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Cover letter [PATCH 0/2] nvme-multipath: round-robin I/O policy
Quoted 3 lines · Hannes Reinecke
Hi all,
after my NUMA path balancing patch hasn't met with universal approval,
Were there any good arguments against it vs just my implementation nitpicks?
Quoted 3 lines
here's now my take on a 'real' round-robin I/O scheduler for NVMe multipathing. With this patch I'm able to boost I/O performance from 127k/127k randrw to 156k/156k randrw (as measured by fio).
Either way that is some horribly bad performance. How much can you get by driving one namespace on each path invididually?