mongo-collection-stats.json

{
	"ns" : "trading.orderbook_btc-eth_poloniexes",
	"count" : 6798430,
	"size" : 980062478,
	"avgObjSize" : 144,
	"storageSize" : 4727635968,
	"capped" : false,
	"wiredTiger" : {
		"metadata" : {
			"formatVersion" : 1
		},
		"creationString" : "allocation_size=4KB,app_metadata=(formatVersion=1),block_allocation=best,block_compressor=snappy,cache_resident=0,checksum=on,colgroups=,collator=,columns=,dictionary=0,encryption=(keyid=,name=),exclusive=0,extractor=,format=btree,huffman_key=,huffman_value=,immutable=0,internal_item_max=0,internal_key_max=0,internal_key_truncate=,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=),lsm=(auto_throttle=,bloom=,bloom_bit_count=16,bloom_config=,bloom_hash_count=8,bloom_oldest=0,chunk_count_limit=0,chunk_max=5GB,chunk_size=10MB,merge_max=15,merge_min=0),memory_page_max=10m,os_cache_dirty_max=0,os_cache_max=0,prefix_compression=0,prefix_compression_min=4,source=,split_deepen_min_child=0,split_deepen_per_child=0,split_pct=90,type=file,value_format=u",
		"type" : "file",
		"uri" : "statistics:table:collection-1--1765877256916651195",
		"LSM" : {
			"bloom filter false positives" : 0,
			"bloom filter hits" : 0,
			"bloom filter misses" : 0,
			"bloom filter pages evicted from cache" : 0,
			"bloom filter pages read into cache" : 0,
			"bloom filters in the LSM tree" : 0,
			"chunks in the LSM tree" : 0,
			"highest merge generation in the LSM tree" : 0,
			"queries that could have benefited from a Bloom filter that did not exist" : 0,
			"sleep for LSM checkpoint throttle" : 0,
			"sleep for LSM merge throttle" : 0,
			"total size of bloom filters" : 0
		},
		"block-manager" : {
			"allocations requiring file extension" : 180375,
			"blocks allocated" : 865478,
			"blocks freed" : 423650,
			"checkpoint size" : 5808742400,
			"file allocation unit size" : 4096,
			"file bytes available for reuse" : 753664,
			"file magic number" : 120897,
			"file major version number" : 1,
			"file size in bytes" : 4727635968,
			"minor version number" : 0
		},
		"btree" : {
			"btree checkpoint generation" : 68947,
			"column-store fixed-size leaf pages" : 0,
			"column-store internal pages" : 0,
			"column-store variable-size RLE encoded values" : 0,
			"column-store variable-size deleted values" : 0,
			"column-store variable-size leaf pages" : 0,
			"fixed-record size" : 0,
			"maximum internal page key size" : 368,
			"maximum internal page size" : 4096,
			"maximum leaf page key size" : 2867,
			"maximum leaf page size" : 32768,
			"maximum leaf page value size" : 67108864,
			"maximum tree depth" : 5,
			"number of key/value pairs" : 0,
			"overflow pages" : 0,
			"pages rewritten by compaction" : 0,
			"row-store internal pages" : 0,
			"row-store leaf pages" : 0
		},
		"cache" : {
			"bytes read into cache" : 49293113161,
			"bytes written from cache" : 6423798159,
			"checkpoint blocked page eviction" : 7,
			"data source pages selected for eviction unable to be evicted" : 4384,
			"hazard pointer blocked page eviction" : 3496,
			"in-memory page passed criteria to be split" : 1164,
			"in-memory page splits" : 579,
			"internal pages evicted" : 141338,
			"internal pages split during eviction" : 2,
			"leaf pages split during eviction" : 968,
			"modified pages evicted" : 238455,
			"overflow pages read into cache" : 0,
			"overflow values cached in memory" : 0,
			"page split during eviction deepened the tree" : 0,
			"page written requiring lookaside records" : 0,
			"pages read into cache" : 38971205,
			"pages read into cache requiring lookaside entries" : 0,
			"pages requested from the cache" : 108029305984,
			"pages written from cache" : 728310,
			"pages written requiring in-memory restoration" : 0,
			"unmodified pages evicted" : 38089340
		},
		"compression" : {
			"compressed pages read" : 1154190,
			"compressed pages written" : 283689,
			"page written failed to compress" : 15,
			"page written was too small to compress" : 444606,
			"raw compression call failed, additional data available" : 0,
			"raw compression call failed, no additional data available" : 0,
			"raw compression call succeeded" : 0
		},
		"cursor" : {
			"bulk-loaded cursor-insert calls" : 0,
			"create calls" : 120,
			"cursor-insert key and value bytes inserted" : 5466179278,
			"cursor-remove key bytes removed" : 0,
			"cursor-update value bytes updated" : 0,
			"insert calls" : 1438258,
			"next calls" : 330951552,
			"prev calls" : 2,
			"remove calls" : 0,
			"reset calls" : 5479359,
			"restarted searches" : 0,
			"search calls" : 7635407,
			"search near calls" : 2549345,
			"truncate calls" : 0,
			"update calls" : 0
		},
		"reconciliation" : {
			"dictionary matches" : 0,
			"fast-path pages deleted" : 0,
			"internal page key bytes discarded using suffix compression" : 12159970,
			"internal page multi-block writes" : 71547,
			"internal-page overflow keys" : 0,
			"leaf page key bytes discarded using prefix compression" : 0,
			"leaf page multi-block writes" : 69398,
			"leaf-page overflow keys" : 0,
			"maximum blocks required for a page" : 365,
			"overflow values written" : 0,
			"page checksum matches" : 12753342,
			"page reconciliation calls" : 512983,
			"page reconciliation calls for eviction" : 71372,
			"pages deleted" : 0
		},
		"session" : {
			"object compaction" : 1,
			"open cursor count" : 6
		},
		"transaction" : {
			"update conflicts" : 0
		}
	},
	"nindexes" : 2,
	"totalIndexSize" : 183660544,
	"indexSizes" : {
		"_id_" : 115302400,
		"date_1" : 68358144
	},
	"ok" : 1
}