Lee, Swami,

I did a simple and quick test. The kernel was also configured with default setting.
It seems this patch fixed USB stability issue.

test case:
  ~ 20 files, about 100MBytes every file.

Speed benchmark result on git 2.6.25
---------------------------------------------
Read:  3.6M Bytes/sec
Write:  2.8M Bytes/sec

Lee, I almost could not believe the writing performance is so poor ( 0.38MB/sec) on your board.
:(

Regards

Frank

Ashuaria Lee wrote:
Hi,

You patch DID work with the stability, and didn't crash using DMA mode.
And Also I got more speed on reading data from USB-storage.
The reading performance has increased significantly.
But, the write speed has decreased.

Let me add the screenshot of each results.

The short summary is
============================================
MVL 2.6.10 with patch 45 | GIT 2.6.25 with your DMA patch
Read: 8.78MB/sec           |  12MB/sec
Write: 3.7MB/sec            |  0.38MB/sec
============================================

The GIT was configured with default setting and only changed to use DMA for USB.
did I do something wrong?

Any opinions?

Best Regards,
Ashuaria Lee


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