[#4121] Test of File-backed Storage Gadget with RAM based file as backing storage failed in BF527-EZKIT 08r1 branch
Submitted By: Vivi Li
Open Date
2008-05-22 05:13:17 Close Date
2008-06-26 23:35:05
Priority:
Medium Assignee:
Bryan Wu
Status:
Closed Fixed In Release:
N/A
Found In Release:
N/A Release:
Category:
N/A Board:
N/A
Processor:
N/A Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Fixed
Uboot version or rev.:
Toolchain version or rev.:
08r1-rc8
App binary format:
N/A
Summary: Test of File-backed Storage Gadget with RAM based file as backing storage failed in BF527-EZKIT 08r1 branch
Details:
On BF527-EZKIT 08r1 branch, it takes a long time to format the RAM based backing storage and copy file into it from a linux host PC.
When generate bigger file, writing speed slows down.
Bellow is the log when generate files of different sizes into the RAM based backing storage.
--
root@adam-desktop2:/mnt# mount -t ext2 -o sync /dev/sdc1 /mnt/usb
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt# time dd if=/dev/zero of=/mnt/usb/10m.bin bs=1M count=1
1+0 records in
1+0 records out
1048576 bytes (1.0 MB) copied, 60.6817 seconds, 17.3 kB/s
real 1m0.695s
user 0m0.000s
sys 0m0.064s
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt# date; time dd if=/dev/zero of=/mnt/usb/10m.bin bs=1M count=2; date
Thu May 22 16:55:41 CST 2008
2+0 records in
2+0 records out
2097152 bytes (2.1 MB) copied, 121.385 seconds, 17.3 kB/s
real 2m1.394s
user 0m0.000s
sys 0m0.036s
Thu May 22 16:57:42 CST 2008
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt# date; time dd if=/dev/zero of=/mnt/usb/10m.bin bs=1M count=3; date
Thu May 22 16:58:53 CST 2008
3+0 records in
3+0 records out
3145728 bytes (3.1 MB) copied, 333.362 seconds, 9.4 kB/s
real 5m33.376s
user 0m0.000s
sys 0m0.004s
Thu May 22 17:04:27 CST 2008
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt# rm usb/10m.bin
root@adam-desktop2:/mnt#
root@adam-desktop2:/mnt# date; time dd if=/dev/zero of=/mnt/usb/5m.bin bs=1M count=5; date
Thu May 22 17:05:38 CST 2008
5+0 records in
5+0 records out
5242880 bytes (5.2 MB) copied, 484.968 seconds, 10.8 kB/s
real 8m4.972s
user 0m0.000s
sys 0m0.072s
Thu May 22 17:13:43 CST 2008
root@adam-desktop2:/mnt#
--
Detailed log of process is attached.
Follow-ups
--- Bryan Wu 2008-05-29 05:29:57
Should be fixed by add DMA to read fifo operation of BF527
Please test again.
-Bryan
--- Vivi Li 2008-06-27 00:35:07
OK now. Close it.
Thanks!
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File Name File Type File Size Posted By
gadget_storage_ram_test_log.fail text/plain 12871 Vivi Li