Skip site navigation (1)Skip section navigation (2)
Date:      Sun, 22 Jul 2012 14:56:56 -0700 (PDT)
From:      Jakub Lach <jakub_lach@mailplus.pl>
To:        freebsd-questions@freebsd.org
Subject:   Re: "da0: 40.000MB/s transfers" What was rationale behind pegging USB 2.0 at 40MB/s?
Message-ID:  <1342994216549-5729035.post@n5.nabble.com>
In-Reply-To: <alpine.BSF.2.00.1207222331130.4614@wojtek.tensor.gdynia.pl>
References:  <1342992043358-5729028.post@n5.nabble.com> <alpine.BSF.2.00.1207222331130.4614@wojtek.tensor.gdynia.pl>

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help
18MB/s write is figure from few

dd if=/dev/zero of=/dev/da0 bs=1 to 15M

runs, 13-14MB/s from actual files copied
in mc to flash and 36-39MB/s file copied 
from flash to hdd in mc. 

dd if=/dev/da0 of=/dev/zero bs=15m

gives 33MB/s read.

Speaking of advertisements, yes I know
but USB 3.0 drives with nice flashes are
capable of speeds well above 2.0 limits, 
and that's the point anyway.

Speaking of formatting, I can't agree, as 
I bought such awfully formatted drive, that it
had to be FAT formatted in Windows  to be 
even recognized in FreeBSD as device. 

And I don't usually have Windows around.



--
View this message in context: http://freebsd.1045724.n5.nabble.com/da0-40-000MB-s-transfers-What-was-rationale-behind-pegging-USB-2-0-at-40MB-s-tp5729028p5729035.html
Sent from the freebsd-questions mailing list archive at Nabble.com.



Want to link to this message? Use this URL: <http://docs.FreeBSD.org/cgi/mid.cgi?1342994216549-5729035.post>