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Bug #12946
closedHeavy memory shuffling in rados bench
% Done:
0%
Source:
Community (dev)
Tags:
Backport:
hammer
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
"rados bench"'s max performance is capped by memory buffer shuffling, and it is particularly bad on fast SSDs/ramdisks.
Reuse existing buffer instead of constantly deleting and recreating it, so the performance is no longer capped by rados.
Fixed in master/infernalis (https://github.com/ceph/ceph/pull/4690).
NOTE: this fix will trigger bug in obj_bencher.ccc (fixed in https://github.com/ceph/ceph/pull/5152).
Updated by Piotr Dalek over 8 years ago
See also http://tracker.ceph.com/issues/12947
Updated by Loïc Dachary over 8 years ago
- Status changed from New to Pending Backport
Updated by Loïc Dachary about 8 years ago
- Status changed from Pending Backport to Resolved
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