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Bug #22788
closedceph-fuse performance issues with rsync
Status:
Won't Fix
Priority:
Normal
Assignee:
Category:
Performance/Resource Usage
Target version:
% Done:
0%
Source:
Community (user)
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(FS):
ceph-fuse
Labels (FS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
Hi,
I have a performance issue when running rsync on a FUSE-mounted CephFS.
dd runs on "line speed" on my test cluster:
root@ceph05:/mnt/cephfs/test# dd if=/root/tester of=/mnt/cephfs/test/tester bs=4M
1024+0 records in
1024+0 records out
4294967296 bytes (4,3 GB, 4,0 GiB) copied, 64,0135 s, 67,1 MB/s
rsync just achieves 5% of that speed:
root@ceph05:/mnt/cephfs/test# rsync -avHPSA /root/tester .
sending incremental file list
tester
64,749,568 1% 3.02MB/s 0:22:47
I see a similar performance discrepancy on a production cluster.
Do you know if rsync and FUSE do not play well together?
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