[LU-13537] DoM: Commit d7073b8 causes significant stat performance degradation Created: 08/May/20 Updated: 31/Oct/22 |
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| Status: | Open |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | Upstream, Lustre 2.12.0, Lustre 2.12.5 |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Major |
| Reporter: | Petros Koutoupis | Assignee: | WC Triage |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | None | ||
| Epic/Theme: | Performance |
| Severity: | 3 |
| Epic: | metadata |
| Rank (Obsolete): | 9223372036854775807 |
| Description |
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Introduced in 2.11.56, patch https://review.whamcloud.com33233/ " mdtest stat results before the commit: MDT0: 349803.384 MDT1: 342253.747 MDT2: 347820.775 MDT3: 323354.925 mdtest stat results after the commit: MDT0: 109842.167 MDT1: 114794.457 MDT2: 104197.950 MDT3: 108848.941 |
| Comments |
| Comment by Cory Spitz [ 12/May/20 ] |
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Jinshan, did you have a take on this? Did you expect the stat regression given the boost in reads that you provided with that change? |
| Comment by Colin Faber [ 31/Oct/22 ] |
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Hi koutoupis Was this ever resolved on your side? |
| Comment by Petros Koutoupis [ 31/Oct/22 ] |
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Colin, In a way, yes. We reverted it on our end; as it continues to show a regression with our test systems and even larger cluster deployments. I am not sure what you want to do here. If you believe that the issue should be closed, I won't argue. |
