[LU-11089] Performance improvements for lu_object locking

• Type: Improvement
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.13.0, Lustre 2.12.5
• Affects Version/s: Lustre 2.12.0
• Assignee: James A Simmons
• Reporter: James A Simmons

Description

While porting the LU-6800 work upstream the reaction to the approach was disliked since it wasn't a real improvement. Neil has created a patch series to break up the global lock to increase its performance.

Issue Links

• is related to: LU-8346 conf-sanity test_93: test failed to respond and timed out
• is related to: LU-12565 Use bit locking in obd_echo
• is related to: LU-6800 Significant performance regression with patch LU-5264
• is related to: LU-9679 Prepare lustre for adoption into the linux kernel

Comments

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/38573/
Subject: LU-11089 obd: use wait_event_var() in lu_context_key_degister()
Project: fs/lustre-release
Branch: b2_12
Current Patch Set:
Commit: ceb45b5fbe35a65539b76678d8187a902504b138

[Gerrit Updater]

Oleg Drokin ([e-mail]) uploaded a new patch: https://review.whamcloud.com/38573
Subject: LU-11089 obd: use wait_event_var() in lu_context_key_degister()
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: a69b6a8f4f1de86ce247620315877a8050e102f8

[Gerrit Updater]

Oleg Drokin ([e-mail]) uploaded a new patch: https://review.whamcloud.com/38570
Subject: LU-11089 obd: use wait_event_var() in lu_context_key_degister()
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: 5df1c23bd60c193ae8e396840d58c7d7e532568e

[James A Simmons]

Last patch landed.

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/33673/
Subject: LU-11089 obd: rename lu_keys_guard to lu_context_remembered_guard
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: bf86b80e4eacd0734665aa818d9cdebf0c157ee1

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/33668/
Subject: LU-11089 obd: remove lock from key register/degister
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: f0b78533f07ca6d766f1ea97a623cdd6ff063e0f

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/33667/
Subject: LU-11089 obd: use wait_event_var() in lu_context_key_degister()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 372ef85512dd2a722415fba9a3df66f81029508b

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/32713/
Subject: LU-11089 obdclass: remove locking from lu_context_exit()
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 62f6496f81ff5896ecc778c9e57b6f84d0f83da9

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/32712/
Subject: LU-11089 obdclass: use an rwsem instead of lu_key_initing_cnt.
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 99bb9f91f5c5ca6a380b22efa04a3c00c8f520ca

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/32711/
Subject: LU-11089 obdclass: make key_set_version an atomic_t
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: e9213217691ae78d15237b0c5ecd3ba0b0416652