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Need More Info About "!heap -s -v" for LFH RRS feed

  • Question

  • Can someone please explain the below tables headers meaning?

    Thanks I.A

    0:000> !heap -s -v 00b70000 
    Walking the heap 00b70000 ........................ 
     0: Heap 00b70000 
      Flags     00001002 - HEAP_GROWABLE 
      Reserved memory in segments       128768 (k) 
      Commited memory in segments       125732 (k) 
      Virtual bytes (correction for large UCR) 125732 (k) 
      Free space                1880 (k) (147 blocks) 
      External fragmentation     1% (147 free blocks) 
      Virtual address fragmentation  0% (12 uncommited ranges) 
      Virtual blocks 0 - total 0 KBytes 
      Lock contention 0 
      Segments    1 
    
    
      Low fragmentation heap  00d10048 
        Lock contention    0 
        Metadata usage  113664 bytes 
        Statistics: 
          Segments created   16056 
          Segments deleted   12641 
          Segments reused      0 
        Block cache: 
             1:     256 bytes (  55,   0) 
             2:     512 bytes (  270,   0) 
             3:     1024 bytes (  229,   0) 
             4:     2048 bytes (  317,   0) 
             5:     4096 bytes (  535,   0) 
             6:     8192 bytes (  555,   0) 
             7:    16384 bytes (  386,   0) 
             8:    32768 bytes (  326,   0) 
             9:    65536 bytes (  331,   0) 
            10:    131072 bytes (  222,   0) 
            11:    262144 bytes (  189,   0) 
    
    
        Buckets info: 
     Size  Blocks Seg Empty Aff  Distribution 
    ------------------------------------------------ 
      16  1676  26   0 1 (26-1676) 
      24  2548  36   0 0 (36-2548) 
      32   63   1   0 1 (1-63) 
      40  1052  20   0 1 (20-1052) 
      48  1146  28   0 1 (28-1146) 
      56   199  18   0 1 (18-199) 
      64   235  13   0 1 (13-235) 
      72  61880  84   0 0 (84-61880) 
      80 115564  120   0 0 (120-115564) 
      88  69331  94   0 0 (94-69331) 
      96   482  20   0 0 (20-482) 
      104  11397  60   0 0 (60-11397) 
      112   450  21   0 0 (21-450) 
      120  12016  58   0 0 (58-12016) 
      128  84166  90   0 0 (90-84166) 
      136  62725  82   0 0 (82-62725) 
      144   126   5   0 0 (5-126) 
      152  24237  64   0 0 (64-24237) 
      160  1470  32   0 0 (32-1470) 
      168  21928  67   0 0 (67-21928) 
      184 155948  160   0 0 (160-155948) 
      192   482  22   0 0 (22-482) 
      200  11879  61   0 0 (61-11879) 
      216  5532  53   0 0 (53-5532) 
      232  8496  57   0 0 (57-8496) 
      240   88   6   0 0 (6-88) 
      248  1912  42   0 0 (42-1912) 
      264  26354  79   0 0 (79-26354) 
      280   687  31   0 0 (31-687) 
      296  1417  42   0 0 (42-1417) 
      312   52   4   0 0 (4-52) 
      328   24   2   0 0 (2-24) 
      344   55   5   0 0 (5-55) 
      360   60   6   0 0 (6-60) 
      376   10   1   0 0 (1-10) 
      392   20   2   0 0 (2-20) 
      408    9   1   0 0 (1-9) 
      424   45   5   0 0 (5-45) 
      456   16   2   0 0 (2-16) 
      472    8   1   0 0 (1-8) 
      488   56   7   0 0 (7-56) 
      504   88  11   0 0 (11-88) 
      520   127   9   0 0 (9-127) 
      552   246  17   0 0 (17-246) 
      584   91   7   0 0 (7-91) 
      616   122  11   0 0 (11-122) 
      648   114  10   0 0 (10-114) 
      680   96   8   0 0 (8-96) 
      712   66   6   0 0 (6-66) 
      744   115  12   0 0 (12-115) 
      776   243  22   0 0 (22-243) 
      808  1247  43   0 0 (43-1247) 
      840   116  14   0 0 (14-116) 
      872  2176  51   0 0 (51-2176) 
      904   531  34   0 0 (34-531) 
      936   513  35   0 0 (35-513) 
      968   268  27   0 0 (27-268) 
     1000   184  21   0 0 (21-184) 
     1032   75   5   0 0 (5-75) 
     1096   91   8   0 0 (8-91) 
     1160   63   5   0 0 (5-63) 
     1224   91   7   0 0 (7-91) 
     1288   132  12   0 0 (12-132) 
     1352   264  21   0 0 (21-264) 
     1416   87   9   0 0 (9-87) 
     1480   22   2   0 0 (2-22) 
     1544   30   3   0 0 (3-30) 
     1608   20   2   0 0 (2-20) 
     1736    9   1   0 0 (1-9) 
    ------------------------------------------------ 
    
    
              Default heap  Front heap    Unused bytes 
      Range (bytes)   Busy Free  Busy  Free   Total Average 
    ------------------------------------------------------------------ 
       0 -  1024   1188  138 1363750 23874  13870121   10 
     1024 -  2048   665   0  802   82   29961   20 
     2048 -  3072    7   2   0   0     56   8 
     3072 -  4096    5   1   0   0     40   8 
     5120 -  6144    10   0   0   0     80   8 
     15360 - 16384    1   0   0   0     1   1 
     28672 - 29696    5   1   0   0     40   8 
     66560 - 67584    1   0   0   0     8   8 
     87040 - 88064    0   1   0   0     0   0 
    371712 - 372736    0   1   0   0     0   0 
    375808 - 376832    0   1   0   0     0   0 
    520192 - 521216    0   2   0   0     0   0 
    ------------------------------------------------------------------ 
     Total       1882  147 1364552 23956  13900307   10 
    
    
    
    
    
    


    Tal.
    Wednesday, January 26, 2011 8:11 AM