節點因 lockdata 使用率過高而導致 OOM

Summary: 節點記憶體不足，因為 lockdata 未釋放已使用的記憶體。

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Symptoms

節點顯示記憶體不足 （OOM） 的跡象，並顯示「lockdata」為高記憶體使用率。
在嚴重的情況下，節點可能會顯示效能下降甚至當機。
這更有可能影響記憶體節點較低，例如 16GB A200/2000 節點，但可能會影響記憶體節點較高。

訊息記錄中的 OOM 訊息範例，而 lockdata 顯示為使用超過 3GB 的最大消費者 --

2025-12-28T04:47:47.270517-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: Malloc Pigs:
2025-12-28T04:47:47.273671-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: Type                   InUse   MemUse   Requests
2025-12-28T04:47:47.275835-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: lockdata             3389051 3389051K 3716197873
2025-12-28T04:47:47.278575-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: 8kB dinodes           818152  670368K 29437430894
2025-12-28T04:47:47.281406-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: isi_hash               31612   92553K 16882805458
2025-12-28T04:47:47.283209-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: layout_hints          216930   67791K  506523261
2025-12-28T04:47:47.285766-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: iaddr_set             918679   57418K 76306136502
2025-12-28T04:47:47.289540-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: lbm super               8820   42195K  255485113
2025-12-28T04:47:47.291600-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: devbuf                 16994   37217K    2699236
2025-12-28T04:47:47.293557-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: bar_owner_vec259         301   32928K   11315960
2025-12-28T04:47:47.295987-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: newblk                     4   32768K   18925356
2025-12-28T04:47:47.299318-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: crc_vec200              7986   31867K  863150005
2025-12-28T04:47:47.301157-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: bam_alloc              34903   19302K 2500981635
2025-12-28T04:47:47.303032-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: ptr_llcb_map           99885   19299K 2274118968
2025-12-28T04:47:47.306277-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: inodedep                   4   16384K    7051517
2025-12-28T04:47:47.309572-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: ddvec84               216932   13621K 4596579001
2025-12-28T04:47:47.312698-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: sysctloid             216712   11835K     231785
2025-12-28T04:47:47.314522-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: Unshown bins account for 99614K
2025-12-28T04:47:47.316385-05:00 <0.4> EXAMPLE-24(id24) /boot/kernel.amd64/kernel: Total: 4634206K

檢查節點可能會顯示幾個使用率較高的節點--

martid32@elvis: /2026-01-12-003 $ grep lockdata */kern.malloc_pigs|sort -k3n
EXAMPLE-21/kern.malloc_pigs:lockdata               57883   57883K   33140621
EXAMPLE-24/kern.malloc_pigs:lockdata              179535  179535K  133252264
EXAMPLE-22/kern.malloc_pigs:lockdata              191116  191116K  134601448
EXAMPLE-15/kern.malloc_pigs:lockdata              201258  201258K  173115576
EXAMPLE-19/kern.malloc_pigs:lockdata              212236  212236K  145973662
EXAMPLE-16/kern.malloc_pigs:lockdata              223574  223574K  200913232
EXAMPLE-14/kern.malloc_pigs:lockdata              270028  270028K  212437579
EXAMPLE-12/kern.malloc_pigs:lockdata              810088  810088K  751687757
EXAMPLE-8/kern.malloc_pigs:lockdata              814480  814480K  820272423
EXAMPLE-20/kern.malloc_pigs:lockdata              861939  861939K  814769447
EXAMPLE-6/kern.malloc_pigs:lockdata             1002016 1002016K 1010428656
EXAMPLE-11/kern.malloc_pigs:lockdata             1043191 1043191K 1112512581
EXAMPLE-13/kern.malloc_pigs:lockdata             1052161 1052161K 1236223736
EXAMPLE-10/kern.malloc_pigs:lockdata             2287836 2287836K 2137296070
EXAMPLE-9/kern.malloc_pigs:lockdata             2287836 2287836K 2130601482
EXAMPLE-5/kern.malloc_pigs:lockdata             2288665 2288665K 2014785292
EXAMPLE-7/kern.malloc_pigs:lockdata             2290701 2290701K 2020741030
EXAMPLE-4/kern.malloc_pigs:lockdata             2291665 2291665K 2069854314
EXAMPLE-3/kern.malloc_pigs:lockdata             2293574 2293574K 2431882220
EXAMPLE-17/kern.malloc_pigs:lockdata             3554690 3554690K 3615677378
EXAMPLE-23/kern.malloc_pigs:lockdata             3554842 3554842K 3785712414
EXAMPLE-2/kern.malloc_pigs:lockdata             3566354 3566354K 3874955814
EXAMPLE-1/kern.malloc_pigs:lockdata             3567030 3567030K 3715078119

Cause

NFS 每檔案例項 lockdata 是檔案系統中檔案開啟作業的正常操作。
在某些情況下，可能無法正確釋放已耗用的記憶體。
這可能會導致未釋放的記憶體保留 3GB+，導致 lockdata 過度使用記憶體。 

Resolution

應主動將節點重新開機，以釋放記憶體 lockdata。
刷新緩存已顯示未進行任何改進。

檢查即時叢集上的記憶體使用率，可以使用以下命令--

isi_for_array -s sysctl kern.malloc_pigs |grep lockdata

 

Affected Products

Isilon, PowerScale, PowerScale OneFS
Article Properties
Article Number: 000418874
Article Type: Solution
Last Modified: 02 يوليو 2026
Version:  5
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