Date: Fri, 13 Mar 2015 14:17:00 +0100 From: Bernd Walter <ticso@cicely7.cicely.de> To: Paul Mather <paul@gromit.dlib.vt.edu> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, Bernd Walter <ticso@cicely7.cicely.de> Subject: Re: BeagleBone slow inbound net I/O Message-ID: <20150313131700.GA34648@cicely7.cicely.de> In-Reply-To: <E5292790-BAE2-41BC-BC76-A31C3C7ED76B@gromit.dlib.vt.edu> References: <20150311165115.32327c5a@ivory.wynn.com> <20150312133433.GB28385@cicely7.cicely.de> <20150312232641.4365263d@ivory.wynn.com> <E5292790-BAE2-41BC-BC76-A31C3C7ED76B@gromit.dlib.vt.edu>
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On Fri, Mar 13, 2015 at 08:34:59AM -0400, Paul Mather wrote: > On Mar 12, 2015, at 11:26 PM, Brett Wynkoop <freebsd-arm@wynn.com> wrote: > > > Greeting- > > > > It is confirmed, the net I/O is much slower than reading from the SD > > card. Here is another run of tar - pipe - tar, but this time the > > source is the sd card and the destination is still the USB zfs. > > > The Beaglebone uses a USB NIC so any I/O to/from SD card will be competing for resources and potentially slowing things down. No it does not. AFAIK the Sitara SoC even has a second NIC and can do Gbit, which is not supported byt the board. I think some or all of the beagleboards use USB for ethernet. -- B.Walter <bernd@bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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