Date: Thu, 19 May 2005 21:00:01 +0200 From: Ulrich Spoerlein <spoerlein@informatik.uni-wuerzburg.de> To: usb@freebsd.org Subject: Very slow umass transfer, which quirk to try? Message-ID: <20050519190001.GA15230@galgenberg.net>
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Hello all,
I got this lousy MP3 Player/USB Stick, and ever since I tried to
upload/download some stuff from within FreeBSD it's horribly slow. I
tried it with 4.something back then and even 5.4 with the updates to the
USB stack didn't improve the situation.
Here's the device
port 3 addr 5: full speed, power 100 mA, config 1, MP3 Flash
Stick(0x1004), Co Ltd(0x11e9), rev 1.00
Using cp to/from the FAT16 partition or using dd(1) on the partition
results in 4kB/transfer and it even manages to bogs down the I/O
throughput of the whole system (even though PREEMPTION is on).
tty ad0 da0 cd0 cpu
tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id
0 229 16.00 1 0.02 4.00 14 0.05 0.00 0 0.00 46 0 3 2 49
0 383 2.00 9 0.02 4.00 14 0.05 0.00 0 0.00 37 0 5 0 59
0 478 0.00 0 0.00 4.00 14 0.05 0.00 0 0.00 27 0 7 0 66
0 387 2.00 2 0.00 4.00 13 0.05 0.00 0 0.00 26 0 5 1 68
1 229 0.00 0 0.00 4.00 14 0.05 0.00 0 0.00 2 0 7 0 91
0 488 0.00 0 0.00 4.00 14 0.05 0.00 0 0.00 5 0 6 2 87
usb_quirks.c has nothing to offer, that springs to mind (except perhaps
a typo in line 89, "farmware" ?)
ISTR that there were some USB and/or SCSI (CAM?) quirks one could tweak.
Could someone point me into the right direction please?
Ulrich Spörlein
--
PGP Key ID: F0DB9F44 Encrypted mail welcome!
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Ok, which part of "Ph'nglui mglw'nafh Cthulhu R'lyeh wgah'nagl fhtagn."
didn't you understand?
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