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Windows 4K alignment
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Classroom Contents
Fixing I/O Performance for Windows Guests in OpenStack Ceph Clouds
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- 1 Intro
- 2 User Complaints
- 3 ceph daemon osd. 1 perf dump (latency)
- 4 ceph daemon osd. 1 perf dump (throttle)
- 5 ceph daemon osd. 1 dump_ops_in_flight
- 6 ceph tell osd.* config set debug_filestore 10
- 7 Flamegraph
- 8 How FileStore works
- 9 Possible Fix #1
- 10 Reproduction
- 11 madvise(FADVISE_DONTNEED)
- 12 Possible Fix #2
- 13 512b/4k Disk Alignment ("4K Drives")
- 14 Additional Fix #3
- 15 Additional Fix #4
- 16 Windows 4K alignment
- 17 Additional Fix #5
- 18 Key Takeaways
