[LU-16286] nodelalloc optimization is missing for RHEL8 kernels causing performance drop Created: 01/Nov/22  Updated: 11/May/23  Resolved: 13/Jan/23

Status: Resolved
Project: Lustre
Component/s: None
Affects Version/s: None
Fix Version/s: Lustre 2.16.0, Lustre 2.15.3

Type: Improvement Priority: Major
Reporter: Andrew Perepechko Assignee: Andrew Perepechko
Resolution: Fixed Votes: 1
Labels: None

Issue Links:
Related
is related to LU-12345 backport - ext4: optimize ext4_find_d... Resolved
Rank (Obsolete): 9223372036854775807

 Description   

nodelalloc optimization is missing for RHEL8 kernels causing performance drop

 

a patch and performance stats will be added

 Comments   
Comment by Gerrit Updater [ 01/Nov/22 ]

"Andrew Perepechko <andrew.perepechko@hpe.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/49007
Subject: LU-16286 ldiskfs: reimplement nodelalloc optimization
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: bb8d32f11f5f3128fbb1f28bb19d9a514c91527e

Comment by Gerrit Updater [ 13/Jan/23 ]

"Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/49007/
Subject: LU-16286 ldiskfs: reimplement nodelalloc optimization
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 3dd73b5c5d61a219c702873711055cb1cc80394a

Comment by Peter Jones [ 13/Jan/23 ]

Landed for 2.16

Comment by Lukasz Flis [ 17/Jan/23 ]

Hi

Can this one be added to b2_15 as well?

We are using 
LU-15894 ofd: revert range locking in ofd
LU-16286 ldiskfs: reimplement nodelalloc optimization 
on our NVME servers what increased fio 4k-rand-write test from 4k iops to 68-100k

before
randwrite-4k: (groupid=0, jobs=32): err= 0: pid=887088: Wed Dec 14 15:06:43 2022
  write: IOPS=4823, BW=18.8MiB/s (19.8MB/s)(4678MiB/248288msec); 0 zone resets
   bw (  KiB/s): min= 3056, max=392881, per=100.00%, avg=61835.30, stdev=1467.54, samples=4847

after  patching
randwrite-4k: (groupid=0, jobs=32): err= 0: pid=530015: Mon Jan 16 14:26:16 2023
  write: IOPS=68.6k, BW=268MiB/s (281MB/s)(62.9GiB/240336msec); 0 zone resets

Comment by Gerrit Updater [ 01/May/23 ]

"Li Dongyang <dongyangli@ddn.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/50810
Subject: LU-16286 ldiskfs: add missing patch for rhel8.7
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 4e9a4690cff25fae8a168b730542115f860b97cd

Comment by Gerrit Updater [ 01/May/23 ]

"Jian Yu <yujian@whamcloud.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/50820
Subject: LU-16286 ldiskfs: add ext4_find_delayed_extent patch to more series
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 0a1758e3edf63537c14d2ce4315a4f278d364376

Comment by Gerrit Updater [ 01/May/23 ]

"Jian Yu <yujian@whamcloud.com>" uploaded a new patch: https://review.whamcloud.com/c/fs/lustre-release/+/50821
Subject: LU-16286 ldiskfs: reimplement nodelalloc optimization
Project: fs/lustre-release
Branch: b2_15
Current Patch Set: 1
Commit: 890696432c9ee515601ddb319b4a4f45d8680813

Comment by Gerrit Updater [ 09/May/23 ]

"Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/50820/
Subject: LU-16286 ldiskfs: add ext4_find_delayed_extent patch to more series
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: d61805600b24b42583c8948bca231c7f56ccaee1

Comment by Gerrit Updater [ 10/May/23 ]

"Oleg Drokin <green@whamcloud.com>" merged in patch https://review.whamcloud.com/c/fs/lustre-release/+/50821/
Subject: LU-16286 ldiskfs: reimplement nodelalloc optimization
Project: fs/lustre-release
Branch: b2_15
Current Patch Set:
Commit: b74560d74a9f890838dbf2f0719e3d27c1e5eaf8

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