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Bug #20847
closedlow performance for bluestore rbd block creation vs filestore
Status:
Closed
Priority:
Normal
Assignee:
-
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
It appears that bluestore may be slower than filestore when creating RBD blocks (ie if pre-filling an RBD volume with 4MB writes). This is most apparent when using a HDD block partition with the WAL and DB on flash. Bluestore however, appears to be faster in a similar setup when creating new 4MB objects via rados bench and when doing 4MB writes to existing RBD blocks.
I'll see if I can run some additional tests to capture with high logging enabled.
Mark
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