[LU-15065] buffered write performance regression with PQ enabled Created: 06/Oct/21 Updated: 16/Mar/22 Resolved: 07/Dec/21 |
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| Status: | Resolved |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | Lustre 2.15.0 |
| Type: | Bug | Priority: | Major |
| Reporter: | Sergey Cheremencev | Assignee: | Sergey Cheremencev |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Severity: | 3 |
| Rank (Obsolete): | 9223372036854775807 |
| Description |
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We found performance drop in a buffered write up to 15%-20% if compare with a baseline without PQ patches. In both cases quota was turned on (enabled="ugp") and set only one limit - block hard limit 500T. Also there was at least one OST pool without any quota limits. Note, this performance issue can't be seen if there is no OST pools in a system. |
| Comments |
| Comment by Gerrit Updater [ 06/Oct/21 ] |
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"Sergey Cheremencev <sergey.cheremencev@hpe.com>" uploaded a new patch: https://review.whamcloud.com/45133 |
| Comment by Gerrit Updater [ 30/Nov/21 ] |
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"Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/45133/ |
| Comment by Cory Spitz [ 07/Dec/21 ] |
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Landed for 2.15.0. |