Details
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Bug
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Resolution: Unresolved
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Minor
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None
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None
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None
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3
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9223372036854775807
Description
We have been noticing decreased performance in any stat-intense operation on lustre 2.10.[0,2] when compared to 2.7. The difference is more significant when testing on HDDs than when testing on SSDs, but is visible for us on both. Between runs I am dropping cache on the client, mds, and oss via "echo 3 > /proc/sys/vm/drop_caches"
For example, in a single directory containing 100000 files:
| Client Version | 2.10.2 | 2.10.2 | 2.7 | 2.7 |
|---|---|---|---|---|
| Server Version | 2.10.2 | 2.7 | 2.10.2 | 2.7 |
| ls -l time (seconds) | 54 | 5 | 53 | 6 |
| du -s time (seconds) | 150 | 22 | 150 | 29 |
We are running 2.10 server on centos7 and 2.7 on rhel6.6.