We’re running Quincy 17.2.7 here,
And we see the iops benchmark performed on osd start:
2024-09-20T09:57:26.265+1000 7facbdc64540 1 osd.196 2879010
maybe_override_max_osd_capacity_for_qos osd bench result - bandwidth (MiB/sec):
4.369 iops: 1118.445 elapsed_sec: 2.682
2024-09-20T09:57:26.265+100
Hi Denis,
We have had the same issue with MClock, and now switch back to WPQ when
draining nodes.
I couldn’t identify the cause of the slow-ops. Even with custom mclock tuning
and
1 backfill per osd, it was still causing client io issues.
From: Denis Polom
Date: Tuesday, 17 September 2024 at