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Old 08-04-2009, 09:16 PM   #1 (permalink)
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Arrow Knowledge Sharing - Domino crash when dealing with large document

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Title: Domino crash or high shared memory usage may occur when dealing with large document

ProblemThe Lotus Domino® server may crash and/or reflect high shared memory usage relating to BLK_OPENED_NOTE. The issue occurs when there is a large document, usually a memo sent to multiple users, that typically has images pasted into a Rich Text field. NSD memcheck will show a high usage of BLK_OPENED_NOTE and in some cases, "Out of memory" warnings may occur.

Affecting Domino 6.0, 6.5, 7.0.

Example of Fatal Thread:
  • @[ 1] 0x60178781 nnotes._Panic@4+417 (60ac3907)
    @[ 2] 0x601787fc nnotes._Halt@4+28 (107)
    @[ 3] 0x60103af5 nnotes._AccessAllProtected@0+85 ()
    @[ 4] 0x600471ce nnotes._AccessAll@8+46 (1,1)
    @[ 5] 0x60048183 nnotes._ProcessGlobalEvent@4+19 (2022790)
    @[ 6] 0x60048097 nnotes._OSProcessShouldQuit@0+39 ()
    @[ 7] 0x600c791b nnotes._OSWaitEvent@8+27 (f6ec746,bb8)
    @[ 8] 0x1000f2b6 nhttpstack.HTEvent::Wait+22 (bb8,3)
    @[ 9] 0x1002c5ba nhttpstack.HTWorkerThread::ThreadMain+106 (f6ec72a,0)
    @[10] 0x60105020 nnotes._ThreadWrapper@4+208 (0)
    @[11] 0x7c57b388 KERNEL32.CreateProcessW+310
The NSD included:
  • <@@ Performance Data -> Memory Usage (Time 15:36:22) @@>
    Total Physical Memory: 2.7G
    Avail Physical Memory: 672.5M
    Memory Usage: 76%
    Type TotalSize Handles Typename
    ---------------------------------------------------------
    0x824b 1666348662 25477 BLK_OPENED_NOTE
    0x82cd 125960192 32 BLK_UBMBUFFER
    0x834a 4718592 5 BLK_GB_CACHE
    Type TotalSize Handles Typename
    ---------------------------------------------------------
    0x824b 1666348662 25477 BLK_OPENED_NOTE
    0x82cd 125960192 32 BLK_UBMBUFFER
SolutionThis issue has been reported to Quality Engineering as SPR# RGET6MS6WB. Improvements have been made in Domino 8.0 which will help reduce the observation of this issue.

Workaround:
Attempt to identify the document in question and modify it as applicable or remove it from being routed.


Source: IBM TechNote 1244016 - IBM - Domino crash or high shared memory usage may occur when dealing with large document
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