什麼會導致mongodb replset如此緩慢？

這是第一個同步到主節點：什麼會導致mongodb replset如此緩慢？

2017-03-03T02:26:22.035+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 283940/5543302 5% (documents copied) 
2017-03-03T02:36:17.984+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 564884/5543302 10% (documents copied) 
2017-03-03T02:48:31.792+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 849813/5543302 15% (documents copied) 
2017-03-03T03:02:14.751+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 1138030/5543302 20% (documents copied) 
2017-03-03T03:14:10.938+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 1474370/5543302 26% (documents copied) 
2017-03-03T03:32:53.645+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 1846885/5543302 33% (documents copied) 
2017-03-03T03:46:50.211+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 2207922/5543302 39% (documents copied) 
2017-03-03T03:56:41.963+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 2568851/5543302 46% (documents copied) 
2017-03-03T04:08:13.513+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 2921563/5543302 52% (documents copied) 
2017-03-03T04:27:33.926+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 3230454/5543302 58% (documents copied) 
2017-03-03T05:09:17.002+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 3408499/5543302 61% (documents copied) 
2017-03-03T05:27:33.817+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 3531029/5543302 63% (documents copied) 
2017-03-03T06:12:44.765+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 3747209/5543302 67% (documents copied) 
2017-03-03T06:49:28.263+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 3894147/5543302 70% (documents copied) 
2017-03-03T07:46:30.452+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 4001247/5543302 72% (documents copied) 
2017-03-03T08:06:56.895+0100 I -  [repl writer worker 3] prodbase.offer collection clone progress: 4108649/5543302 74% (documents copied)

所有服務器都與它們之間的250 Mbit/s的相同的數據中心。

來源

2017-03-03 Lisio

您是否檢查了磁盤IO？ –

建議：移動到3.4.x

大的改進與初始同步

否則，一切取決於你有多少數據在主

另一種解決方案，以避免這一點就是

備份您的主
恢復初級到您的輔助
配置並啓動複製

來源

2017-03-03 13:17:01

我們在所有情況下都有3.4.1。我明白，複製目錄可能會快得多，但並不指望本機同步速度太慢。 – Lisio

你的數據有多大？在我們的案例中，我們有大約10Gb的數據，初始同步需要45秒到1分鐘。在800KM的節點上需要2-3分鐘。 –

該集合的大小是55Gb（由WiredTiger壓縮到20Gb）。 – Lisio

什麼會導致mongodb replset如此緩慢？

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