[操作疑難] Crucial BX100 256GB 比較慢?

今日買左隻Crucial BX100 256GB,六張紅衫魚找一個大洋。
返到屋企,插左落去 P67 chipset 既 SATA6 port,format 左(用default),行左一轉CrystalDiskMark,唔明點解READ 唔過400MB/s,我見其他人有5xxMB/s,甚至官方講Seq READ 有535MB/s,random read IOPS 有87000(我一萬都無...),random write IOPS 有70000 (我有2萬only)

唔知道有無野做漏左......

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CrystalDiskMark 5.0.2 x64 (C) 2007-2015 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

   Sequential Read (Q= 32,T= 1) :   384.356 MB/s
  Sequential Write (Q= 32,T= 1) :   362.449 MB/s
  Random Read 4KiB (Q= 32,T= 1) :    29.374 MB/s [  7171.4 IOPS]
Random Write 4KiB (Q= 32,T= 1) :    83.346 MB/s [ 20348.1 IOPS]
         Sequential Read (T= 1) :   394.936 MB/s
        Sequential Write (T= 1) :   342.930 MB/s
   Random Read 4KiB (Q= 1,T= 1) :    23.071 MB/s [  5632.6 IOPS]
  Random Write 4KiB (Q= 1,T= 1) :    51.630 MB/s [ 12605.0 IOPS]

  Test : 1024 MiB [J: 0.0% (0.1/232.9 GiB)] (x1)  [Interval=5 sec]
  Date : 2015/10/03 21:37:46
    OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)

SATA6 port 係INTEL PORT定第3廠PORT? 第3廠PORT差好多的

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三百幾多數係外加 sata port

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回覆 2# lio


    我主板係 MSI P67A-GD65,SATA 1-2號是P67 SATA6Gb/s, SATA7-8是 Marvell 9128 SATA6Gb/s。我兩邊都試過,結果都係差唔多,所以我先覺得有點失望...

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回覆 3# Miipp


    其實關唔關個crystaldiskmark 既 version 太新?

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試埋 ASS 咪知囉

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Random Read 4KiB (Q= 32,T= 1) :    29.374 MB/s [  7171.4 IOPS]
Random Read 4KiB (Q= 1,T= 1) :    23.071 MB/s [  5632.6 IOPS]

QD=1同QD=32咁接近
樓主行緊IDE Mode?
請用AHCI Mode

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回覆 8# KinChungE

我聽你講轉左 AHCI Mode 後,個MB/s數值同官方既好接近了535Read,370Write。咁個IOPS 係咪無得改善?thanks~~
    -----------------------------------------------------------------------
CrystalDiskMark 5.0.2 x64 (C) 2007-2015 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

   Sequential Read (Q= 32,T= 1) :   563.472 MB/s
  Sequential Write (Q= 32,T= 1) :   373.294 MB/s
  Random Read 4KiB (Q= 32,T= 1) :   223.120 MB/s [ 54472.7 IOPS]
Random Write 4KiB (Q= 32,T= 1) :   177.786 MB/s [ 43404.8 IOPS]
         Sequential Read (T= 1) :   523.437 MB/s
        Sequential Write (T= 1) :   376.045 MB/s
   Random Read 4KiB (Q= 1,T= 1) :    24.019 MB/s [  5864.0 IOPS]
  Random Write 4KiB (Q= 1,T= 1) :    51.857 MB/s [ 12660.4 IOPS]

  Test : 1024 MiB [J: 21.6% (50.2/232.9 GiB)] (x1)  [Interval=5 sec]
  Date : 2015/10/05 22:58:40
    OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)

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回覆  KinChungE

我聽你講轉左 AHCI Mode 後,個MB/s數值同官方既好接近了535Read,370Write。咁個IOPS 係 ...
onwest 發表於 2015-10-5 23:01


你random read/write q=32已經有明顯改善

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