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Bug #39330
openrecovery transfer rate not correct
Status:
New
Priority:
Low
Assignee:
-
Category:
-
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(RADOS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
When running all OSDs inside a QEMU VM (with real disks attached through virtio-scsi), the gathered recovery statistics rate does not equal the real IO rate (measured on the hypervisor):
ceph shows:
659 active+clean
109 active+remapped+backfilling
recovery: 1.6 GiB/s, 403 objects/s
This reported IO rate does not match the measured IO rates of QEMU (iotop or htop):
qemu disk read: 236.00 MB/s
write: 218.72 MB/s
All the PGs being backfilled due to rebalancing are 8+3 erasure coding.
Any idea where the calculation is wrong and the result ends up being way too much?
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