MongoDB server freeze - büyük miktarda koleksiyon

Question

Büyük MongoDB veritabanı (yaklaşık 1,4 milyon koleksiyon), MongoDB 3.0, motor kayalarDB, işletim sistemi Ubuntu 14.04 var.

Bu DB, 16 çekirdek ve 108 GB RAM ile sanal makinede (VmWare vCloud) bulunur (şu anda mongoDB, takas olmadan 70 GB bellek kullanmıştır).

Üretim kurulum seçenekleri: adanan bölümdeki

• verileri - XFS dosya sistemi
• transparent_hugepage etkin - asla
• transparent_hugepage dolandırmak - asla

DB istatistik:

{ 
    "db" : "ctp", 
    "collections" : 1369486, 
    "objects" : 20566852, 
    "avgObjSize" : 1126.82749999854, 
    "dataSize" : 23175294422, 
    "storageSize" : 23231888384, 
    "numExtents" : 0, 
    "indexes" : 6686175, 
    "indexSize" : 685981393, 
    "ok" : 1 
} 

Numune koleksiyonları boyutları:

{ 
    "ns" : "ctp._cf123_ct49_dfc-r_dtc-r_tof2_groupat", 
    "count" : 33, 
    "size" : 38172, 
    "avgObjSize" : 1156, 
    "storageSize" : 38144, 
    "capped" : false, 
    "nindexes" : 5, 
    "totalIndexSize" : 6312, 
    "indexSizes" : { 
     "_id_" : 18, 
     "exAt" : 16, 
     "unique" : 6246, 
     "_smp" : 10, 
     "_smpdf" : 22 
    }, 
    "ok" : 1 
} 

{ 
    "ns" : "ctp._afpoznan123_atlondyn49_df2016-09_dt2016-09_tof2_groupdfdt", 
    "count" : 188, 
    "size" : 208677, 
    "avgObjSize" : 1109, 
    "storageSize" : 208640, 
    "capped" : false, 
    "nindexes" : 5, 
    "totalIndexSize" : 7945, 
    "indexSizes" : { 
     "_id_" : 2845, 
     "exAt" : 256, 
     "_smp" : 160, 
     "_smpdf" : 352, 
     "unique" : 4332 
    }, 
    "ok" : 1 
} 
{ 
    "ns" : "ctp._cf123_ct42_dfc-r_dtc-r_tof2_groupat", 
    "count" : 27, 
    "size" : 30400, 
    "avgObjSize" : 1125, 
    "storageSize" : 30208, 
    "capped" : false, 
    "nindexes" : 5, 
    "totalIndexSize" : 84, 
    "indexSizes" : { 
     "_id_" : 18, 
     "exAt" : 16, 
     "unique" : 18, 
     "_smp" : 10, 
     "_smpdf" : 22 
    }, 
    "ok" : 1 
} 

Periyodik her 5 dakikada bu koleksiyonlara yazar ve bu koleksiyon değil (koleksiyonları adları bu koleksiyonları içinde bulunan verilere dayanmaktadır) ve oluşturma var yoksa yenisini yaratır senaryoyu çalıştığı indeksleri.

Verilerin koleksiyonlara yazılması sırasında bu sunucunun bazı donmalarının olduğunu fark ettik. Bu tür bir donma 5 ila 60 saniye arasında sürebilir.

Bu sorunu yaşayan herkes bize yardımcı olabilir mi?

: mongostat dan

db.currentOP(); 

    "opid" : 22717868, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._cf115_atboma25_dfc-r_dtc-r_tof2_groupdfym", 
     "query" : { 
      "$query" : { 
       "T#df" : { 
        "$lt" : "2017-02-28" 
       } 
      }, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:33832", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(22004831) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135907", 
     "threadId" : "0xc3e5d64e0", 
     "connectionId" : 135907, 
     "opid" : 22719375, 
     "active" : true, 
     "secs_running" : 0, 
     "microsecs_running" : NumberLong(223601), 
     "op" : "query", 
     "ns" : "top_search.top_searches", 
     "query" : { 
      "$msg" : "query not recording (too large)" 
     }, 
     "planSummary" : "IXSCAN { T#df: 1, T#dt: 1 }", 
     "client" : "192.168.1.33:33648", 
     "numYields" : 170, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r", 
      "Collection" : "r" 
     }, 
     "waitingForLock" : false, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(342) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(171) 
       } 
      }, 
      "Collection" : { 
       "acquireCount" : { 
        "r" : NumberLong(171) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135959", 
     "threadId" : "0x10d4445260", 
     "connectionId" : 135959, 
     "opid" : 22718533, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._afoxford-house23_attamarindo32_dfc-r_dtc-r_tof2_groupdfdt", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1), 
       "T#df" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:34022", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(15003580) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135829", 
     "threadId" : "0x10d4445740", 
     "connectionId" : 135829, 
     "opid" : 22717923, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._ct123_dfc-r_dtc-r_tof2_groupdfym", 
     "query" : { 
      "$query" : { 
       "T#df" : { 
        "$lt" : "2017-02-28" 
       } 
      }, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:33026", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(21004810) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135781", 
     "threadId" : "0x2d678e0", 
     "connectionId" : 135781, 
     "opid" : 22718920, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._cf1147_atrostock36_df2016-06_dtc-r_tof2_groupaf", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:60874", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(12002770) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135870", 
     "threadId" : "0xd04ed5d40", 
     "connectionId" : 135870, 
     "opid" : 22719172, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._cf61_atpristina131_dfc-r_dtc-r_tof2_groupaf", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:33369", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(7001590) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135687", 
     "threadId" : "0xc3e5d7380", 
     "connectionId" : 135687, 
     "opid" : 22717925, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._cf105_athana156_df2016-06_dt2016-06_tof2_groupaf", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:60022", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(21003871) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135754", 
     "threadId" : "0xd04ed5860", 
     "connectionId" : 135754, 
     "opid" : 22718485, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._cf5_atdhaka1113_dfc-r_dtc-r_tof2_groupaf", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:60603", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(15503084) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135644", 
     "threadId" : "0xc3e5d9c20", 
     "connectionId" : 135644, 
     "opid" : 22719073, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._afgenua71_ataarhus37_dfc-r_dtc-r_tof2_groupdfdt", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1), 
       "T#df" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:59698", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(7501602) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135891", 
     "threadId" : "0xd04ed7a80", 
     "connectionId" : 135891, 
     "opid" : 22719284, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._attianjin30_dfc-r_dtc-r_tof2_groupcf", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:33530", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(3000658) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135673", 
     "threadId" : "0xd04ed6220", 
     "connectionId" : 135673, 
     "opid" : 22718185, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._afwroclaw123_atlondyn49_df2016-06_dt2016-06_tof2_groupdfdt", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1), 
       "T#df" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:59925", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(16503737) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135989", 
     "threadId" : "0x10d44443c0", 
     "connectionId" : 135989, 
     "opid" : 22719240, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._cf28_atmarakesz93_dfc-r_dtc-r_tof2_groupaf", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:34367", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(4500947) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135410", 
     "threadId" : "0x2d66220", 
     "connectionId" : 135410, 
     "opid" : 22717853, 
     "active" : true, 
     "secs_running" : 22, 
     "microsecs_running" : NumberLong(22406019), 
     "op" : "query", 
     "ns" : "ctp.$cmd", 
     "query" : { 
      "createIndexes" : "_cf71_df2016-07_dt2016-11_tof2_groupct", 
      "indexes" : [ 
       { 
        "key" : { 
         "expireAt" : 1 
        }, 
        "name" : "exAt", 
        "background" : true, 
        "expireAfterSeconds" : 0 
       } 
      ] 
     }, 
     "client" : "0.0.0.0:0", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "w", 
      "Database" : "W" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(376227), 
        "w" : NumberLong(15477) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(180375), 
        "w" : NumberLong(15476), 
        "W" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "W" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "W" : NumberLong(22004935) 
       } 
      }, 
      "Collection" : { 
       "acquireCount" : { 
        "r" : NumberLong(180375), 
        "w" : NumberLong(15476) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135961", 
     "threadId" : "0x10d4442b60", 
     "connectionId" : 135961, 
     "opid" : 22718537, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._cf5_atattawapiskat23_dfc-r_dtc-r_tof2_groupaf", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:34029", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(15002978) 
       } 
      } 
     } 
    }, 
    { 
     "desc" : "conn135905", 
     "threadId" : "0xc3e5d6000", 
     "connectionId" : 135905, 
     "opid" : 22718186, 
     "active" : false, 
     "op" : "query", 
     "ns" : "ctp._afwarszawa123_atdubrownik61_df2016-08_dt2016-08_tof2_groupdfdt", 
     "query" : { 
      "$query" : {}, 
      "$orderby" : { 
       "T#mp" : NumberLong(1), 
       "T#df" : NumberLong(1) 
      } 
     }, 
     "client" : "192.168.1.33:33638", 
     "numYields" : 0, 
     "locks" : { 
      "Global" : "r", 
      "Database" : "r" 
     }, 
     "waitingForLock" : true, 
     "lockStats" : { 
      "Global" : { 
       "acquireCount" : { 
        "r" : NumberLong(2) 
       } 
      }, 
      "Database" : { 
       "acquireCount" : { 
        "r" : NumberLong(1) 
       }, 
       "acquireWaitCount" : { 
        "r" : NumberLong(1) 
       }, 
       "timeAcquiringMicros" : { 
        "r" : NumberLong(16503305) 
       } 
      } 
     } 
    } 
] 

---

db.serverStatus()["rocksdb"]; 

{ 
    "stats" : [ 
     "", 
     "** Compaction Stats [default] **", 
     "Level Files Size(MB) Score Read(GB) Rn(GB) Rnp1(GB) Write(GB) Wnew(GB) Moved(GB) W-Amp Rd(MB/s) Wr(MB/s) Comp(sec) Comp(cnt) Avg(sec) Stall(cnt) KeyIn KeyDrop", 
     "---------------------------------------------------------------------------------------------------------------------------------------------------------------------", 
     " L0  0/0  0.00 0.0  0.0  0.0  0.0  1.4  1.4  0.0 0.0  0.0 120.1  12  39 0.312   0  0  0", 
     " L4  0/0  0.00 0.0  1.8  1.8  0.0  1.7  1.7  0.0 1.0 102.0  99.7  18  11 1.606   7  21M 153K", 
     " L5  15/0  620.47 1.0  6.6  1.4  5.2  5.5  0.3  0.0 3.9  44.4  37.0  152  25 6.086   0 110M 840K", 
     " L6 106/0 6401.43 0.0  3.5  0.3  3.3  3.3  -0.0  0.0 12.6  25.9  23.7  140   7 20.057   0 162M 14M", 
     " Sum 121/0 7021.90 0.0  11.9  3.4  8.5  11.9  3.4  0.0 8.3  37.8  37.8  322  82 3.932   7 295M 15M", 
     " Int  0/0  0.00 0.0  0.0  0.0  0.0  0.0  0.0  0.0 0.0  0.0  0.0   0   0 0.000   0  0  0", 
     "Flush(GB): cumulative 1.429, interval 0.000", 
     "Stalls(count): 0 level0_slowdown, 0 level0_slowdown_with_compaction, 0 level0_numfiles, 0 level0_numfiles_with_compaction, 0 pending_compaction_bytes, 0 memtable_compaction, 7 leveln_slowdown_soft, 0 leveln_slowdown_hard", 
     "", 
     "** DB Stats **", 
     "Uptime(secs): 34952.0 total, 0.2 interval", 
     "Cumulative writes: 4990K writes, 17M keys, 4989K batches, 1.0 writes per batch, ingest: 2.02 GB, 0.06 MB/s", 
     "Cumulative WAL: 4990K writes, 0 syncs, 4990122.00 writes per sync, written: 2.02 GB, 0.06 MB/s", 
     "Cumulative compaction: 11.90 GB write, 0.35 MB/s write, 11.90 GB read, 0.35 MB/s read, 322.4 seconds", 
     "Cumulative stall: 00:00:3.548 H:M:S, 0.0 percent", 
     "Interval writes: 0 writes, 0 keys, 0 batches, 0.0 writes per batch, ingest: 0.00 MB, 0.00 MB/s", 
     "Interval WAL: 0 writes, 0 syncs, 0.00 writes per sync, written: 0.00 MB, 0.00 MB/s", 
     "Interval compaction: 0.00 GB write, 0.00 MB/s write, 0.00 GB read, 0.00 MB/s read, 0.0 seconds", 
     "Interval stall: 00:00:0.000 H:M:S, 0.0 percent" 
    ], 
    "num-immutable-mem-table" : "0", 
    "mem-table-flush-pending" : "0", 
    "compaction-pending" : "0", 
    "background-errors" : "0", 
    "cur-size-active-mem-table" : "33MB", 
    "cur-size-all-mem-tables" : "33MB", 
    "num-entries-active-mem-table" : "185495", 
    "num-entries-imm-mem-tables" : "0", 
    "estimate-table-readers-mem" : "91MB", 
    "num-snapshots" : "1", 
    "oldest-snapshot-time" : "1465911051", 
    "num-live-versions" : "1", 
    "total-live-recovery-units" : 60, 
    "block-cache-usage" : "34GB", 
    "transaction-engine-keys" : NumberLong(4210), 
    "transaction-engine-snapshots" : NumberLong(1), 
    "thread-status" : [] 
} 

---

db.serverStatus()['globalLock']; 

{ 
    "totalTime" : NumberLong(34952090000), 
    "currentQueue" : { 
     "total" : 57, 
     "readers" : 56, 
     "writers" : 1 
    }, 
    "activeClients" : { 
     "total" : 124, 
     "readers" : 57, 
     "writers" : 1 
    } 
} 

---

Ve ekranı: Burada

bazı andan itibaren donma günlükleri

Saygılarımızla

Answer 1

Yeni koleksiyonların oluşturulmasının bir anlamı yok. Bir mühendislik hatasıdır. Bu koleksiyonlar, mevcut koleksiyonlar listesinde gezinmek ve listede bir koleksiyon varlığını kontrol etmek zorunda kaldığı için kesinlikle db sunucusunu donduracaktır. Ayrıca, inanıyorum, metadata güncellemeleri gibi bazı işlemler. operasyonlar itibaren

bir dizin oluşturma oluşturma yeni ad ve dizin bina için gerekli olan

"query" : { 
     "createIndexes" : "_cf71_df2016-07_dt2016-11_tof2_groupct", 
     "indexes" : [ 
      { 
       "key" : { 
        "expireAt" : 1 
       }, 
       "name" : "exAt", 
       "background" : true, 
       "expireAfterSeconds" : 0 
      } 
     ] 
    } 

Ayrıca elde kilitleri gibi şeyler zaman alır anlamlı seferinde alır biraz daha anlaşılmaktadır açın. Yine, "expireAfterSeconds" : 0 gibi parametreler böyle bir ölçekte akıllıca değildir. Temel olarak, zaman aşımına uğramış kayıtları bulmak ve ayarlamak için her 60 saniyede bir 1.4M zamanlayıcıları çalıştırmanız ve indeksin yeniden oluşturulacağından emin olmanız gerekecektir (mongostat üzerindeki silmelere bakın).

Lütfen, toplama sayısı veya dağıtımlar arasında toplama bölmelerini azaltmaya yönelik değişiklikleri dikkate alın. Ayrıca aktif olmayan koleksiyonlar için indeksleri de bırakabilirsiniz. Ayrıca, tüm boş & kullanılmayan koleksiyonları bırakmak akıllıca olacaktır.

Anında çözüm bulmak için mevcut darboğazları bulmanız gerekir: RAM, CPU veya IOpS. Ekstra RAM'iniz var, bunu MongoDB'ye verebilir, daha fazla önbellek almanıza ve gereksiz okumalardan kaçınmanıza yardımcı olur. Sürücünüzün ne kadar meşgul olduğunu görmek için IOpS'nizi iostat aracılığıyla ölçün.