作者harveychen (凸=..=凸)
看板Notebook
标题[问题] 硬碟读取速度一问
时间Sun Apr 19 21:46:35 2015
厂牌:ASUS
型号:X550VB
购入日期:2013/06
距上次使用正常时间:今天
OS版本:WIN8
平常作业内容:CHROME、CAE
有无内建还原功能(Y/N):Y
问题内容:
前阵子换了固态硬碟，然後把原厂硬碟换到SATA2的光碟机位置
现在电脑分成三个槽 C(SSD) D(HDD)(原硬碟C槽) E(HDD)(原硬碟D槽)
然後用了CrystalDiskMark扫读取和写入的速度发现同一颗硬碟DE两个槽的速度居然差
异不小...这样是正常的吗? 理论上同一颗硬碟不是应该读取跟写入会很接近吗?
怎麽会这样呢?? 还有我用这软体扫了几次结果都差不多，应该不会是误差
下面附上三个槽的读写数据，依照CDE依序往下排
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 508.031 MB/s
Sequential Write : 157.349 MB/s
Random Read 512KB : 335.265 MB/s
Random Write 512KB : 158.059 MB/s
Random Read 4KB (QD=1) : 24.252 MB/s [ 5921.0 IOPS]
Random Write 4KB (QD=1) : 47.589 MB/s [ 11618.5 IOPS]
Random Read 4KB (QD=32) : 266.063 MB/s [ 64956.8 IOPS]
Random Write 4KB (QD=32) : 157.856 MB/s [ 38539.0 IOPS]
Test : 1000 MB [C: 40.6% (38.2/94.1 GB)] (x5)
Date : 2015/04/19 16:29:08
OS : Windows 8 [6.2 Build 9200] (x64)
-----------------------------------------------------------------------
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 89.203 MB/s
Sequential Write : 88.049 MB/s
Random Read 512KB : 31.146 MB/s
Random Write 512KB : 34.677 MB/s
Random Read 4KB (QD=1) : 0.373 MB/s [ 91.0 IOPS]
Random Write 4KB (QD=1) : 0.998 MB/s [ 243.5 IOPS]
Random Read 4KB (QD=32) : 0.909 MB/s [ 222.0 IOPS]
Random Write 4KB (QD=32) : 0.989 MB/s [ 241.5 IOPS]
Test : 1000 MB [D: 76.3% (107.3/140.7 GB)] (x5)
Date : 2015/04/19 17:04:09
OS : Windows 8 [6.2 Build 9200] (x64)
-----------------------------------------------------------------------
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 75.923 MB/s
Sequential Write : 74.616 MB/s
Random Read 512KB : 26.136 MB/s
Random Write 512KB : 29.869 MB/s
Random Read 4KB (QD=1) : 0.334 MB/s [ 81.5 IOPS]
Random Write 4KB (QD=1) : 0.824 MB/s [ 201.2 IOPS]
Random Read 4KB (QD=32) : 0.755 MB/s [ 184.2 IOPS]
Random Write 4KB (QD=32) : 0.838 MB/s [ 204.7 IOPS]
Test : 1000 MB [E: 38.9% (208.6/536.6 GB)] (x5)
Date : 2015/04/19 16:39:13
OS : Windows 8 [6.2 Build 9200] (x64)
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※ harveychen:转录至看板 Nethood 04/20 00:02