[LU-8047] optimize ll_md_blocking_ast() for a failed lock Created: 20/Apr/16 Updated: 21/Jun/19 Resolved: 21/Mar/19 |
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| Status: | Resolved |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | Lustre 2.9.0 |
| Fix Version/s: | Lustre 2.13.0, Lustre 2.12.3 |
| Type: | Bug | Priority: | Minor |
| Reporter: | Andrew Perepechko | Assignee: | Andrew Perepechko |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | patch | ||
| Issue Links: |
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| Severity: | 3 | ||||
| Rank (Obsolete): | 9223372036854775807 | ||||
| Description |
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When investigating performance issues with If a directory has millions of cached dentries, ll_invalidate_negative_children() spends several scheduler ticks just to process the list. There is clearly some room for ll_invalidate_negative_children() optimization, but we'd like to optimize at least ll_md_blocking_ast() to avoid processing for not granted locks. A patch will be uploaded shortly. |
| Comments |
| Comment by Gerrit Updater [ 20/Apr/16 ] |
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Andrew Perepechko (andrew.perepechko@seagate.com) uploaded a new patch: http://review.whamcloud.com/19665 |
| Comment by Aurelien Degremont (Inactive) [ 06/Dec/18 ] |
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The attached patch looked good but was not landed at the end. Any news on this front? |
| Comment by Gerrit Updater [ 21/Mar/19 ] |
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Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/19665/ |
| Comment by Peter Jones [ 21/Mar/19 ] |
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Landed for 2.13 |
| Comment by Gerrit Updater [ 30/May/19 ] |
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Minh Diep (mdiep@whamcloud.com) uploaded a new patch: https://review.whamcloud.com/35001 |
| Comment by Gerrit Updater [ 20/Jun/19 ] |
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Oleg Drokin (green@whamcloud.com) merged in patch https://review.whamcloud.com/35001/ |