3 ms·
I don’t think you want to benchmark datastructures designed to be efficient on high latency disks using low latency memory. Many file systems can be efficient w
by MobiusHorizons 5y ago
I don’t think you want to benchmark datastructures designed to be efficient on high latency disks using low latency memory. Many file systems can be efficient with low latency disks, that’s not very impressive. What’s impressive is being efficient with high latency storage.
- derefr 5y agoWho said anything about low latency? The thing you get from a simulated block device is predictable, controllable latency. Latency that can be deterministically replayed. Latency that can be precisely normalized away in the benchmark results, without worrying about inter-batch anomalies (if using separate disks) or the effects of wear (on the same disk.)
- MobiusHorizons 5y agoIf it’s backed by ram, I would expect the performance characteristics to differ from ssd or hdd, especially in respect to latency concerns.