Video of latest xbmc code on Raspberry Pi
Just for reference, here's the CrystalDiskMark results for an Integral Fusion 32GB USB3.0 drive tested in a USB2.0 port.

The 4K write results for the 1000MB test are quite dreadful, but for some reason much better when testing only 50MB (another factor of 50 improvement). I've repeated the tests several times and the results are consistent - 4K write performance falls off a cliff at 500MB:

Code:
1000MB Test:
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CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :    34.775 MB/s
          Sequential Write :    13.574 MB/s
         Random Read 512KB :    33.825 MB/s
        Random Write 512KB :     0.579 MB/s
    Random Read 4KB (QD=1) :     5.442 MB/s [  1328.7 IOPS]
   Random Write 4KB (QD=1) :     0.024 MB/s [     5.9 IOPS]
   Random Read 4KB (QD=32) :     5.606 MB/s [  1368.7 IOPS]
  Random Write 4KB (QD=32) :     0.035 MB/s [     8.5 IOPS]

  Test : 1000 MB [H: 0.0% (0.0/28.9 GB)] (x5)
  Date : 2013/12/13 12:55:48
    OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)

50MB Test:
-----------------------------------------------------------------------
CrystalDiskMark 3.0.3 x64 (C) 2007-2013 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :    33.405 MB/s
          Sequential Write :    12.676 MB/s
         Random Read 512KB :    32.925 MB/s
        Random Write 512KB :    11.387 MB/s
    Random Read 4KB (QD=1) :     4.912 MB/s [  1199.2 IOPS]
   Random Write 4KB (QD=1) :     1.236 MB/s [   301.6 IOPS]
   Random Read 4KB (QD=32) :     5.633 MB/s [  1375.2 IOPS]
  Random Write 4KB (QD=32) :     1.437 MB/s [   350.9 IOPS]

  Test : 50 MB [H: 0.0% (0.0/28.9 GB)] (x5)
  Date : 2013/12/13 13:02:19
    OS : Windows 7 Ultimate SP1 [6.1 Build 7601] (x64)

I use this drive formatted with ext4 in an OpenELEC R-Pi overclocked to 1GHz, and library performance is good (fanartres 1080, imageres 720). It's possible to get ahead of the poster display when browsing quickly through the library but it only takes a second or so to catch up. Can't say I've seen any impact on movie start performance as they're all streamed over NFS.
Texture Cache Maintenance Utility: Preload your texture cache for optimal UI performance. Remotely manage media libraries. Purge unused artwork to free up space. Find missing media. Configurable QA check to highlight metadata issues. Aid in diagnosis of library and cache related problems.
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Messages In This Thread
RE: - by godson - 2013-10-13, 00:29
USB 2.0 vs. Class 10 vs. USB 3.0 - by xbs08 - 2013-12-13, 11:56
RE: Video of latest xbmc code on Raspberry Pi - by Milhouse - 2013-12-13, 15:34


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