Required mainly for clients, allows to scale parallel client I/O with TCP
from 100-150k iops to ~400k iops and from 2-3 GB/s to at least 7-8 GB/s
with 4 I/O threads, at the same time increasing Q=1 latency by 2x thread
switching delay, which is ~10 us when CPU powersaving is disabled and may
be as high as 200 us when it's enabled.
VDUSE has multiple advantages:
- Better performance
- Lack of timeout problems
- And even the ability to recover after restart of the vitastor-csi pod!
Vitaliy Filippov