[LU-8683] readahead: update ras window correctly Created: 09/Oct/16 Updated: 19/Mar/19 Resolved: 25/Oct/16 |
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| Status: | Resolved |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | Lustre 2.9.0 |
| Fix Version/s: | Lustre 2.9.0 |
| Type: | Bug | Priority: | Minor |
| Reporter: | Zhenyu Xu | Assignee: | Zhenyu Xu |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | None | ||
| Issue Links: |
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| Severity: | 3 | ||||||||
| Rank (Obsolete): | 9223372036854775807 | ||||||||
| Description |
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When stride-RA hit case miss, we only reset normal sequential read-ahead window, but not reset the stride IO to avoid the overhead of re-detecting stride IO. While when the normal RA window is set to not insect with the stride-RA window, when we try to increase the stride-RA window length later, the presumption does not hold. This patch resets the stride IO as well in this case. |
| Comments |
| Comment by Gerrit Updater [ 09/Oct/16 ] |
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Bobi Jam (bobijam@hotmail.com) uploaded a new patch: http://review.whamcloud.com/23032 |
| Comment by Gerrit Updater [ 25/Oct/16 ] |
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Oleg Drokin (oleg.drokin@intel.com) merged in patch http://review.whamcloud.com/23032/ |
| Comment by Peter Jones [ 25/Oct/16 ] |
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Landed for 2.9 |