Hi,
On Mon, Feb 15, 2010 at 12:28:09AM +0100, ext Laurent Pinchart wrote:
Is there any known reliability issue with MUSB double buffered endpoints ?
I've been testing it with my mode1 dma patches and musb rtl1.8 with
omap3630 and it seems to be working quite well. Here are some throught
measurement with mass storage mode:
a) eMMC
$ ./msc -t 0 -o /dev/sdc -s 65536 -c 1024
test 0: sent 64.0000 MBytes read 21.56 MB/s write 17.77 MB/s ... success
$ sudo hdparm -tT /dev/sdc
/dev/sdc:
Timing cached reads: 11480 MB in 2.00 seconds = 5745.01 MB/sec
Timing buffered disk reads: 46 MB in 3.17 seconds = 14.49 MB/sec
b) TMPFS
$ ./msc -t 0 -o /dev/sdc -s 65536 -c 1024
test 0: sent 64.0000 MBytes read 20.67 MB/s write 17.75 MB/s ... success
$ sudo hdparm -tT /dev/sdc
/dev/sdc:
Timing cached reads: 11804 MB in 2.00 seconds = 5908.09 MB/sec
Timing buffered disk reads: 32 MB in 1.60 seconds = 19.98 MB/sec
I'll try to re-apply the dma mode1 patches on top of current mainline
during next week so you will be able to test them as well.
--
balbi
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