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I'm curious how NVMe-oF compares to iSER? From a quick search it seems that NVMe-oF is still early days with limited implementations, where iSER is more establ
by nmaludy 5y ago
I'm curious how NVMe-oF compares to iSER?
From a quick search it seems that NVMe-oF is still early days with limited implementations, where iSER is more established. Both rely on RDMA.
I could not find any performance comparisons. Any insight here?
- benlwalker 5y agoI don't have any formal comparisons handy but there's lots of NVMe-oF benchmarks here: https://spdk.io/doc/performance_reports.html https://spdk.io/doc/performance_reports.html NVMe-oF can do both TCP (akin to iSCSI) and RDMA (akin to iSER). There are likely several reasons NVMe-oF is faster, but one big one is that each connection within a session shares state in iSCSI, so you either process all connections for a session on a single thread or you take locks. In NVMe-oF, it's possible to keep every connection entirely independent, so the NVMe-oF implementations scale better.