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固态硬盘缓存池的速度有问题,还不如阵列的机械硬盘

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我是一块msata,一块sata ssd组的缓存池,两块机械硬盘组的阵列,没有校验盘。lan网卡直通给爱快软路由的。

现在不管读写,阵列的机械硬盘都能稳定跑满千兆,但缓存盘只能跑满几秒或者十几秒,大概1G数据的时候,就降速到40M左右了。我看cpu的负载也不大。硬盘都是新的

又测试了一下,局域网共享拷贝是读写都有这个问题,用krusader直接硬盘往cache读写的话,只有往cache写是这种情况,读是满速的

搞得我现在都不知道要不要使用cache了,这是什么问题啊?

Edited by thisisyy

1、没有校验盘的阵列,不会影响硬盘速度,既然能跑满千兆网络,不是万兆网络就无需cache了,因为如果正常的话,有没有cache结果都一样。cache可以作为经常读写磁盘应用的安装盘。

2、至于cache更低速的情况,建议你分别测试两块ssd的速度,不建议不同类ssd组raid。

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