… reads, still asynchronous It gives almost stable 370 MiB/sec throughput, with some strange small periodic drops. To better understand response… and vary amount of threads. Throughput: And response times: We still see small hiccups in throughput and response times even for small… performance only for 1 thread. For 2 or more, the throughput varies a lot from second to second. I draw boxplots…

…-like pattern with throughput 350-400 MiB/sec. Random reads, async: Interesting to see that there is quite unstable throughput in range… variety in throughput. It gets even more interesting when we go to read sync IO, with 1-64 threads. Throughput: Response time…

… writes: For random writes there is not much improvements, the throughput is about the same. Random reads: But there is a… previously. Sync random reads per threads, throughput: Response time: Again, there is improvement in throughput, in both in quality and absolute value…

… throughput: 660 MiB/s for single, and 1300 MiB/s for Duo Random reads: Again both modes provides stable level of throughput…

…: Random read throughput is very close to perfect line, and it is 1450 MiB/sec. This is best read throughput I’ve…

… main point was to note even though throughput graphs are a lot better than average throughput measure over long time they still…

… That may explain why do we see such variance in throughput.

Vadim, I see you measured response time distribution for reads in sync mode but only Throughput every 10 seconds for random writes. Any reason for that ?