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为什么我的MongoDB日志会充满“getmorelocal.oplog.rs”？
原标题：Why do my MongoDB logs fill up with "getmore local.oplog.rs"?

在我的MongoDB日志中，这种情况反复出现。一些注意事项：

  • MongoDB 1.8.1 on Ubuntu 11.04
  • Primary in a replica set
  • 64gb disk
  • 5gb RAM
  • new Date(5610408224193773570) is always the same
  • verbose = true is commented out in the config file

可能是我的oplog太大了，所以每次二次查询都需要4秒？

Wed May 25 00:35:58 [dur] lsn set 1552362
Wed May 25 00:36:02 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:06 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:11 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3884ms
Wed May 25 00:36:15 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:19 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:23 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:27 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:31 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:35 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:39 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:43 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:47 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:51 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:55 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:36:58 [dur] lsn set 1582372
Wed May 25 00:36:59 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:02 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:817 nreturned:1 3229ms
Wed May 25 00:37:06 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3685ms
Wed May 25 00:37:10 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:14 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:18 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:22 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:26 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:30 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:34 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:38 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:42 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:46 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:50 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:54 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:58 [conn14] getmore local.oplog.rs cid:265112601668423723 getMore: { ts: { $gte: new Date(5610408224193773570) } }  bytes:20 nreturned:0 3979ms
Wed May 25 00:37:58 [dur] lsn set 1612372
最佳回答

考虑到日期是相同的，看起来辅助用户正在查询新的oplog条目，但什么都没有得到。您是否正在向主数据库写入任何数据？

这种行为看起来有点不寻常。然而，我只是通过启动一个复制集而不向它写入，得到了同样的结果。你看到的行为是意料之中的。

时间：2011-05-25 18:22:08
问题回答

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