-- [1] queue = b'nvme0q1' usecs : count distribution 0 -> 1 : 7310 |****************************************| 2 -> 3 : 11 | | 4 -> 7 : 10 | | 8 -> 15 : 20 | | 16 -> 31 : 0 | | 32 -> 63 : 0 | | 64 -> 127 : 1 | |[2] queue = b'nvme0q1' usecs : count distribution 0 -> 1 : 7309 |****************************************| 2 -> 3 : 14 | | 4 -> 7 : 7 | | 8 -> 15 : 17 | |
Rrr, email made the histograms look funky (tabs vs. spaces...) The count is what's important anyways... Just adding that I used an Intel P3500 nvme device.
We can see that most of the time our latency is pretty good (<1ns) but with huge tail latencies (some 8-15 ns and even one in 32-63 ns).
Obviously is micro-seconds and not nano-seconds (I wish...) -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
