折腾：
【已解决】把本地的音频字幕等数据存储到本地MongoDB数据库中
期间，此处已经用PyMongo去操作GridFS去把171个文件都保存进去了：
如图：
共有300个chunk文件块：
而原来那些文件，文件系统中共6G多：
现在此处想要搞清楚存入到GridFS后，总大小是多少。
gridfs total size
[mongodb-user] Get the total size of files stored in GridFS from the PHP driver – Grokbase
要自己每个加起来，好傻
Get the total size of files stored in GridFS from the PHP driver – Google Groups
chunks.stats()
去看看API文档中是否有：
没找到api文档
只有官网的：
没看到有status
PyCharm中的动态提示也看不到对应代码：
What’s the maximum size for GridFS on MongoDB? – Stack Overflow
db.collection.totalSize() — MongoDB Manual 3.6
直接有：db.collection.totalSize
Collection Methods — MongoDB Manual 3.6
还真的看到有：
db.collection.stats()
Reports on the state of a collection. Provides a wrapper around the collStats.
都属于：
mongo Shell Methods — MongoDB Manual 3.6
即：
Mongo的shell命令行中，才有这些接口
-》而此处的Python中的gridfs的driver，貌似没有实现这些功能。
去试试，好像不是想要的：
<code>> db.fs.stats()
{
"ns" : "gridfs.fs",
"ok" : 0,
"errmsg" : "Collection [gridfs.fs] not found."
}
</code>好像是要的：
<code>> db.fs.files.stats()
{
"ns" : "gridfs.fs.files",
"size" : 155368,
"count" : 171,
"avgObjSize" : 908,
"storageSize" : 139264,
"capped" : false,
"wiredTiger" : {
"metadata" : {
"formatVersion" : 1
},
"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",
"type" : "file",
"uri" : "statistics:table:collection-11-6711652102439670599",
"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" : 45,
"blocks allocated" : 186,
"blocks freed" : 79,
"checkpoint size" : 57344,
"file allocation unit size" : 4096,
"file bytes available for reuse" : 65536,
"file magic number" : 120897,
"file major version number" : 1,
"file size in bytes" : 139264,
"minor version number" : 0
},
"btree" : {
"btree checkpoint generation" : 1463,
"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" : 3,
"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 currently in the cache" : 178660,
"bytes read into cache" : 72411,
"bytes written from cache" : 1635289,
"checkpoint blocked page eviction" : 0,
"data source pages selected for eviction unable to be evicted" : 0,
"eviction walk passes of a file" : 78,
"eviction walk target pages histogram - 0-9" : 57,
"eviction walk target pages histogram - 10-31" : 21,
"eviction walk target pages histogram - 128 and higher" : 0,
"eviction walk target pages histogram - 32-63" : 0,
"eviction walk target pages histogram - 64-128" : 0,
"eviction walks abandoned" : 0,
"eviction walks gave up because they restarted their walk twice" : 71,
"eviction walks gave up because they saw too many pages and found no candidates" : 0,
"eviction walks gave up because they saw too many pages and found too few candidates" : 0,
"eviction walks reached end of tree" : 148,
"eviction walks started from root of tree" : 76,
"eviction walks started from saved location in tree" : 2,
"hazard pointer blocked page eviction" : 0,
"in-memory page passed criteria to be split" : 0,
"in-memory page splits" : 0,
"internal pages evicted" : 0,
"internal pages split during eviction" : 0,
"leaf pages split during eviction" : 13,
"modified pages evicted" : 48,
"overflow pages read into cache" : 0,
"page split during eviction deepened the tree" : 0,
"page written requiring lookaside records" : 0,
"pages read into cache" : 3,
"pages read into cache requiring lookaside entries" : 0,
"pages requested from the cache" : 6854,
"pages seen by eviction walk" : 270,
"pages written from cache" : 118,
"pages written requiring in-memory restoration" : 4,
"tracked dirty bytes in the cache" : 0,
"unmodified pages evicted" : 0
},
"cache_walk" : {
"Average difference between current eviction generation when the page was last considered" : 0,
"Average on-disk page image size seen" : 0,
"Average time in cache for pages that have been visited by the eviction server" : 0,
"Average time in cache for pages that have not been visited by the eviction server" : 0,
"Clean pages currently in cache" : 0,
"Current eviction generation" : 0,
"Dirty pages currently in cache" : 0,
"Entries in the root page" : 0,
"Internal pages currently in cache" : 0,
"Leaf pages currently in cache" : 0,
"Maximum difference between current eviction generation when the page was last considered" : 0,
"Maximum page size seen" : 0,
"Minimum on-disk page image size seen" : 0,
"Number of pages never visited by eviction server" : 0,
"On-disk page image sizes smaller than a single allocation unit" : 0,
"Pages created in memory and never written" : 0,
"Pages currently queued for eviction" : 0,
"Pages that could not be queued for eviction" : 0,
"Refs skipped during cache traversal" : 0,
"Size of the root page" : 0,
"Total number of pages currently in cache" : 0
},
"compression" : {
"compressed pages read" : 3,
"compressed pages written" : 65,
"page written failed to compress" : 0,
"page written was too small to compress" : 53,
"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" : 4,
"cursor-insert key and value bytes inserted" : 1251147,
"cursor-remove key bytes removed" : 2359,
"cursor-update value bytes updated" : 0,
"insert calls" : 1382,
"modify calls" : 0,
"next calls" : 4345,
"prev calls" : 1,
"remove calls" : 1211,
"reserve calls" : 0,
"reset calls" : 7797,
"restarted searches" : 0,
"search calls" : 3641,
"search near calls" : 14,
"truncate calls" : 0,
"update calls" : 0
},
"reconciliation" : {
"dictionary matches" : 0,
"fast-path pages deleted" : 0,
"internal page key bytes discarded using suffix compression" : 102,
"internal page multi-block writes" : 0,
"internal-page overflow keys" : 0,
"leaf page key bytes discarded using prefix compression" : 0,
"leaf page multi-block writes" : 19,
"leaf-page overflow keys" : 0,
"maximum blocks required for a page" : 1,
"overflow values written" : 0,
"page checksum matches" : 3,
"page reconciliation calls" : 114,
"page reconciliation calls for eviction" : 41,
"pages deleted" : 35
},
"session" : {
"object compaction" : 0,
"open cursor count" : 3
},
"transaction" : {
"update conflicts" : 0
}
},
"nindexes" : 2,
"totalIndexSize" : 81920,
"indexSizes" : {
"_id_" : 36864,
"filename_1_uploadDate_1" : 45056
},
"ok" : 1
}
</code>但是里面的size都不对啊：
155368=155368/1024=151.8 KB？
估计是chunks里面才对。
<code>> db.fs.files.totalSize() 221184 > db.fs.chunks.totalSize() 825204736 </code>
果然是的：
files总大小=221184=221184/1024=216KB
chunks总大小=825204736=825204736/1024*1024=786.98MB？
难道6GB的文件，保存进去，才只有700多MB？
还是我自己搞错了
-》是我自己搞错了：
-〉此处只保存了6G多里面的，其中171个（音质好的）音频文件，只是其中一部分而已。
-》其他还有很多pdf，音质不好的，没有保存。所以此处只有700多MB的audio file。
再去看看：
<code>> db.fs.chunks.stats()
{
"ns" : "gridfs.fs.chunks",
"size" : 487720549,
"count" : 1940,
"avgObjSize" : 251402,
"storageSize" : 825081856,
"capped" : false,
"wiredTiger" : {
"metadata" : {
"formatVersion" : 1
},
"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",
"type" : "file",
"uri" : "statistics:table:collection-9-6711652102439670599",
"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" : 7560,
"blocks allocated" : 16018,
"blocks freed" : 13974,
"checkpoint size" : 428584960,
"file allocation unit size" : 4096,
"file bytes available for reuse" : 396480512,
"file magic number" : 120897,
"file major version number" : 1,
"file size in bytes" : 825081856,
"minor version number" : 0
},
"btree" : {
"btree checkpoint generation" : 1469,
"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" : 3,
"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 currently in the cache" : 527641271,
"bytes read into cache" : 593098632,
"bytes written from cache" : 3999808086,
"checkpoint blocked page eviction" : 0,
"data source pages selected for eviction unable to be evicted" : 11,
"eviction walk passes of a file" : 1061,
"eviction walk target pages histogram - 0-9" : 299,
"eviction walk target pages histogram - 10-31" : 48,
"eviction walk target pages histogram - 128 and higher" : 0,
"eviction walk target pages histogram - 32-63" : 66,
"eviction walk target pages histogram - 64-128" : 648,
"eviction walks abandoned" : 36,
"eviction walks gave up because they restarted their walk twice" : 44,
"eviction walks gave up because they saw too many pages and found no candidates" : 118,
"eviction walks gave up because they saw too many pages and found too few candidates" : 13,
"eviction walks reached end of tree" : 423,
"eviction walks started from root of tree" : 215,
"eviction walks started from saved location in tree" : 846,
"hazard pointer blocked page eviction" : 5,
"in-memory page passed criteria to be split" : 976,
"in-memory page splits" : 482,
"internal pages evicted" : 0,
"internal pages split during eviction" : 0,
"leaf pages split during eviction" : 412,
"modified pages evicted" : 12625,
"overflow pages read into cache" : 0,
"page split during eviction deepened the tree" : 0,
"page written requiring lookaside records" : 0,
"pages read into cache" : 2418,
"pages read into cache requiring lookaside entries" : 0,
"pages requested from the cache" : 143872,
"pages seen by eviction walk" : 251679,
"pages written from cache" : 15948,
"pages written requiring in-memory restoration" : 3,
"tracked dirty bytes in the cache" : 0,
"unmodified pages evicted" : 0
},
"cache_walk" : {
"Average difference between current eviction generation when the page was last considered" : 0,
"Average on-disk page image size seen" : 0,
"Average time in cache for pages that have been visited by the eviction server" : 0,
"Average time in cache for pages that have not been visited by the eviction server" : 0,
"Clean pages currently in cache" : 0,
"Current eviction generation" : 0,
"Dirty pages currently in cache" : 0,
"Entries in the root page" : 0,
"Internal pages currently in cache" : 0,
"Leaf pages currently in cache" : 0,
"Maximum difference between current eviction generation when the page was last considered" : 0,
"Maximum page size seen" : 0,
"Minimum on-disk page image size seen" : 0,
"Number of pages never visited by eviction server" : 0,
"On-disk page image sizes smaller than a single allocation unit" : 0,
"Pages created in memory and never written" : 0,
"Pages currently queued for eviction" : 0,
"Pages that could not be queued for eviction" : 0,
"Refs skipped during cache traversal" : 0,
"Size of the root page" : 0,
"Total number of pages currently in cache" : 0
},
"compression" : {
"compressed pages read" : 868,
"compressed pages written" : 9137,
"page written failed to compress" : 6694,
"page written was too small to compress" : 120,
"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" : 4,
"cursor-insert key and value bytes inserted" : 3990244820,
"cursor-remove key bytes removed" : 33198,
"cursor-update value bytes updated" : 0,
"insert calls" : 15864,
"modify calls" : 0,
"next calls" : 2124,
"prev calls" : 1,
"remove calls" : 13924,
"reserve calls" : 0,
"reset calls" : 61053,
"restarted searches" : 0,
"search calls" : 41900,
"search near calls" : 82,
"truncate calls" : 0,
"update calls" : 0
},
"reconciliation" : {
"dictionary matches" : 0,
"fast-path pages deleted" : 0,
"internal page key bytes discarded using suffix compression" : 15722,
"internal page multi-block writes" : 12,
"internal-page overflow keys" : 0,
"leaf page key bytes discarded using prefix compression" : 0,
"leaf page multi-block writes" : 509,
"leaf-page overflow keys" : 0,
"maximum blocks required for a page" : 1,
"overflow values written" : 0,
"page checksum matches" : 354,
"page reconciliation calls" : 12777,
"page reconciliation calls for eviction" : 11772,
"pages deleted" : 12220
},
"session" : {
"object compaction" : 0,
"open cursor count" : 3
},
"transaction" : {
"update conflicts" : 0
}
},
"nindexes" : 2,
"totalIndexSize" : 122880,
"indexSizes" : {
"_id_" : 61440,
"files_id_1_n_1" : 61440
},
"ok" : 1
}
</code>然后去Python中的gridfs中去试试：
<code>logging.info("fsCollection.stats()=%s", fsCollection.stats())
logging.info("fsCollection.totalSize()=%s", fsCollection.totalSize())
</code>真的是没有：
<code> logging.info("fsCollection.stats()=%s", fsCollection.stats())
AttributeError: 'GridFS' object has no attribute ‘stats'
logging.info("fsCollection.totalSize()=%s", fsCollection.totalSize())
AttributeError: 'GridFS' object has no attribute 'totalSize'
</code>【总结】
<code>> db.fs.chunks.stats()
{
"ns" : "gridfs.fs.chunks",
"size" : 487720549,
"count" : 1940,
"avgObjSize" : 251402,
"storageSize" : 825081856,
...
</code>可以看到详细的信息，其中size和storageSize，和：
<code>> db.fs.chunks.totalSize() 825204736 </code>
输出的值，都不太一样。
另外，对于files，也是类似的：
<code>> db.fs.files.stats()
{
"ns" : "gridfs.fs.files",
"size" : 155368,
"count" : 171,
"avgObjSize" : 908,
"storageSize" : 139264,
"capped" : false,
</code>和：
<code>> db.fs.files.totalSize() 221184 </code>
转载请注明：在路上 » 【已解决】MongoDB的GridFS的所有文件的总大小