Date: Sun, 27 Sep 2009 22:31:38 +0800 From: Eugene Grosbein <eugen@kuzbass.ru> To: usb@freebsd.org Cc: Hans Petter Selasky <hselasky@freebsd.org> Subject: Re: 8.0-RC1: AMD CS5536 (Geode) USB 2.0 controller strange behavour Message-ID: <20090927143138.GA20842@svzserv.kemerovo.su> In-Reply-To: <20090927141205.GA19251@svzserv.kemerovo.su> References: <20090926081733.GA24121@svzserv.kemerovo.su> <20090927141205.GA19251@svzserv.kemerovo.su>
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> %dd if=/dev/zero bs=64k of=/dev/da0 count=1000
>
> It started to work, meantime iostat output was:
>
> 63.62 17 1.05
> 0.00 0 0.00
> 0.00 0 0.00
> 0.00 0 0.00
> 0.00 0 0.00
> 0.00 0 0.00
> 64.00 2 0.15
> 62.31 83 5.06
> 0.25 0 0.00
> 0.00 0 0.00
> 0.00 0 0.00
> ^C
>
> To this moment, dd has finished his work and printed:
>
> 1000+0 records in
> 1000+0 records out
> 65536000 bytes transferred in 78.627073 secs (833504 bytes/sec)
After some googling, I've tried sysctl hw.usb.ehci.no_hs=1,
reconnected HDD and retried the test. iostat output was:
%iostat -d -K -w 10 da0
da0
KB/t tps MB/s
2.88 0 0.00
63.19 8 0.49
64.00 11 0.69
64.00 11 0.69
64.00 11 0.68
64.00 11 0.69
64.00 11 0.69
64.00 11 0.69
64.00 11 0.68
64.00 11 0.69
41.81 7 0.28
0.00 0 0.00
^C
%dd if=/dev/zero bs=64k of=/dev/da0 count=1000
1000+0 records in
1000+0 records out
65536000 bytes transferred in 91.364733 secs (717301 bytes/sec)
So, this time no idle periods but I'm still not happy with the speed.
Eugene Grosbein
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