[Crash-utility] Crash dump of RHEL5, what does "SHARED" memory represent in kmem -i output?

James Washer washer at trlp.com
Fri Jul 15 15:56:48 UTC 2011


In the data below, what memory usage is reported as SHARED? Does this imply SysV shared memory, or pages shared between processes, or something else all together?


kmem-i

              PAGES        TOTAL      PERCENTAGE
 TOTAL MEM  9228936      35.2 GB         ----
      FREE    20260      79.1 MB    0% of TOTAL MEM
      USED  9208676      35.1 GB   99% of TOTAL MEM
    SHARED  9051322      34.5 GB   98% of TOTAL MEM
   BUFFERS      151       604 KB    0% of TOTAL MEM
    CACHED     2455       9.6 MB    0% of TOTAL MEM
      SLAB    27419     107.1 MB    0% of TOTAL MEM

TOTAL HIGH        0            0    0% of TOTAL MEM
 FREE HIGH        0            0    0% of TOTAL HIGH
 TOTAL LOW  9228936      35.2 GB  100% of TOTAL MEM
  FREE LOW    20260      79.1 MB    0% of TOTAL LOW

TOTAL SWAP  4194302        16 GB         ----
 SWAP USED  2294571       8.8 GB   54% of TOTAL SWAP
 SWAP FREE  1899731       7.2 GB   45% of TOTAL SWAP



 - jim







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