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  1. > use sports
  2. switched to db sports
  3. > db.getCollection('basketball').stats()
  4. {
  5. "ns" : "sports.basketball",
  6. "size" : 1404710820,
  7. "count" : 215,
  8. "avgObjSize" : 6533538,
  9. "storageSize" : 317194240,
  10. "capped" : false,
  11. "wiredTiger" : {
  12. "metadata" : {
  13. "formatVersion" : 1
  14. },
  15. "creationString" : "access_pattern_hint=none,allocation_size=4KB,app_metadata=(formatVersion=1),assert=(commit_timestamp=none,read_timestamp=none),block_allocation=best,block_compressor=snappy,cache_resident=false,checksum=on,colgroups=,collator=,columns=,dictionary=0,encryption=(keyid=,name=),exclusive=false,extractor=,format=btree,huffman_key=,huffman_value=,ignore_in_memory_cache_size=false,immutable=false,internal_item_max=0,internal_key_max=0,internal_key_truncate=true,internal_page_max=4KB,key_format=q,key_gap=10,leaf_item_max=0,leaf_key_max=0,leaf_page_max=32KB,leaf_value_max=64MB,log=(enabled=true),lsm=(auto_throttle=true,bloom=true,bloom_bit_count=16,bloom_config=,bloom_hash_count=8,bloom_oldest=false,chunk_count_limit=0,chunk_max=5GB,chunk_size=10MB,merge_custom=(prefix=,start_generation=0,suffix=),merge_max=15,merge_min=0),memory_page_max=10m,os_cache_dirty_max=0,os_cache_max=0,prefix_compression=false,prefix_compression_min=4,source=,split_deepen_min_child=0,split_deepen_per_child=0,split_pct=90,type=file,value_format=u",
  16. "type" : "file",
  17. "uri" : "statistics:table:collection-4--8822207942074951669",
  18. "LSM" : {
  19. "bloom filter false positives" : 0,
  20. "bloom filter hits" : 0,
  21. "bloom filter misses" : 0,
  22. "bloom filter pages evicted from cache" : 0,
  23. "bloom filter pages read into cache" : 0,
  24. "bloom filters in the LSM tree" : 0,
  25. "chunks in the LSM tree" : 0,
  26. "highest merge generation in the LSM tree" : 0,
  27. "queries that could have benefited from a Bloom filter that did not exist" : 0,
  28. "sleep for LSM checkpoint throttle" : 0,
  29. "sleep for LSM merge throttle" : 0,
  30. "total size of bloom filters" : 0
  31. },
  32. "block-manager" : {
  33. "allocations requiring file extension" : 0,
  34. "blocks allocated" : 50,
  35. "blocks freed" : 19,
  36. "checkpoint size" : 293879808,
  37. "file allocation unit size" : 4096,
  38. "file bytes available for reuse" : 23121920,
  39. "file magic number" : 120897,
  40. "file major version number" : 1,
  41. "file size in bytes" : 317194240,
  42. "minor version number" : 0
  43. },
  44. "btree" : {
  45. "btree checkpoint generation" : 24,
  46. "column-store fixed-size leaf pages" : 0,
  47. "column-store internal pages" : 0,
  48. "column-store variable-size RLE encoded values" : 0,
  49. "column-store variable-size deleted values" : 0,
  50. "column-store variable-size leaf pages" : 0,
  51. "fixed-record size" : 0,
  52. "maximum internal page key size" : 368,
  53. "maximum internal page size" : 4096,
  54. "maximum leaf page key size" : 2867,
  55. "maximum leaf page size" : 32768,
  56. "maximum leaf page value size" : 67108864,
  57. "maximum tree depth" : 3,
  58. "number of key/value pairs" : 0,
  59. "overflow pages" : 0,
  60. "pages rewritten by compaction" : 0,
  61. "row-store internal pages" : 0,
  62. "row-store leaf pages" : 0
  63. },
  64. "cache" : {
  65. "bytes currently in the cache" : 147858683,
  66. "bytes read into cache" : 75144535952,
  67. "bytes written from cache" : 8509279,
  68. "checkpoint blocked page eviction" : 0,
  69. "data source pages selected for eviction unable to be evicted" : 210,
  70. "eviction walk passes of a file" : 772,
  71. "eviction walk target pages histogram - 0-9" : 76,
  72. "eviction walk target pages histogram - 10-31" : 601,
  73. "eviction walk target pages histogram - 128 and higher" : 0,
  74. "eviction walk target pages histogram - 32-63" : 95,
  75. "eviction walk target pages histogram - 64-128" : 0,
  76. "eviction walks abandoned" : 3,
  77. "eviction walks gave up because they restarted their walk twice" : 750,
  78. "eviction walks gave up because they saw too many pages and found no candidates" : 14,
  79. "eviction walks gave up because they saw too many pages and found too few candidates" : 2,
  80. "eviction walks reached end of tree" : 1522,
  81. "eviction walks started from root of tree" : 769,
  82. "eviction walks started from saved location in tree" : 3,
  83. "hazard pointer blocked page eviction" : 210,
  84. "in-memory page passed criteria to be split" : 0,
  85. "in-memory page splits" : 0,
  86. "internal pages evicted" : 0,
  87. "internal pages split during eviction" : 0,
  88. "leaf pages split during eviction" : 1,
  89. "modified pages evicted" : 15,
  90. "overflow pages read into cache" : 0,
  91. "page split during eviction deepened the tree" : 0,
  92. "page written requiring lookaside records" : 0,
  93. "pages read into cache" : 8580,
  94. "pages read into cache requiring lookaside entries" : 0,
  95. "pages requested from the cache" : 11396,
  96. "pages seen by eviction walk" : 35642,
  97. "pages written from cache" : 30,
  98. "pages written requiring in-memory restoration" : 0,
  99. "tracked dirty bytes in the cache" : 2371106,
  100. "unmodified pages evicted" : 8527
  101. },
  102. "cache_walk" : {
  103. "Average difference between current eviction generation when the page was last considered" : 0,
  104. "Average on-disk page image size seen" : 0,
  105. "Average time in cache for pages that have been visited by the eviction server" : 0,
  106. "Average time in cache for pages that have not been visited by the eviction server" : 0,
  107. "Clean pages currently in cache" : 0,
  108. "Current eviction generation" : 0,
  109. "Dirty pages currently in cache" : 0,
  110. "Entries in the root page" : 0,
  111. "Internal pages currently in cache" : 0,
  112. "Leaf pages currently in cache" : 0,
  113. "Maximum difference between current eviction generation when the page was last considered" : 0,
  114. "Maximum page size seen" : 0,
  115. "Minimum on-disk page image size seen" : 0,
  116. "Number of pages never visited by eviction server" : 0,
  117. "On-disk page image sizes smaller than a single allocation unit" : 0,
  118. "Pages created in memory and never written" : 0,
  119. "Pages currently queued for eviction" : 0,
  120. "Pages that could not be queued for eviction" : 0,
  121. "Refs skipped during cache traversal" : 0,
  122. "Size of the root page" : 0,
  123. "Total number of pages currently in cache" : 0
  124. },
  125. "compression" : {
  126. "compressed pages read" : 8160,
  127. "compressed pages written" : 20,
  128. "page written failed to compress" : 0,
  129. "page written was too small to compress" : 10,
  130. "raw compression call failed, additional data available" : 0,
  131. "raw compression call failed, no additional data available" : 0,
  132. "raw compression call succeeded" : 0
  133. },
  134. "cursor" : {
  135. "bulk-loaded cursor-insert calls" : 0,
  136. "create calls" : 2,
  137. "cursor-insert key and value bytes inserted" : 25436596,
  138. "cursor-remove key bytes removed" : 0,
  139. "cursor-update value bytes updated" : 0,
  140. "insert calls" : 53,
  141. "modify calls" : 0,
  142. "next calls" : 11395,
  143. "prev calls" : 1,
  144. "remove calls" : 0,
  145. "reserve calls" : 0,
  146. "reset calls" : 2813,
  147. "restarted searches" : 0,
  148. "search calls" : 52,
  149. "search near calls" : 2706,
  150. "truncate calls" : 0,
  151. "update calls" : 0
  152. },
  153. "reconciliation" : {
  154. "dictionary matches" : 0,
  155. "fast-path pages deleted" : 0,
  156. "internal page key bytes discarded using suffix compression" : 1,
  157. "internal page multi-block writes" : 0,
  158. "internal-page overflow keys" : 0,
  159. "leaf page key bytes discarded using prefix compression" : 0,
  160. "leaf page multi-block writes" : 1,
  161. "leaf-page overflow keys" : 0,
  162. "maximum blocks required for a page" : 1,
  163. "overflow values written" : 0,
  164. "page checksum matches" : 0,
  165. "page reconciliation calls" : 29,
  166. "page reconciliation calls for eviction" : 9,
  167. "pages deleted" : 0
  168. },
  169. "session" : {
  170. "object compaction" : 0,
  171. "open cursor count" : 2
  172. },
  173. "transaction" : {
  174. "update conflicts" : 0
  175. }
  176. },
  177. "nindexes" : 1,
  178. "totalIndexSize" : 36864,
  179. "indexSizes" : {
  180. "_id_" : 36864
  181. },
  182. "ok" : 1
  183. }
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