[fedora-arm] Performance on BBB

Jos Vos jos at xos.nl
Mon Dec 2 21:15:45 UTC 2013

On Fri, Nov 29, 2013 at 04:36:57PM -0500, Travis Paul wrote:

> Could this be due to an outdated version of u-boot? I haven't had a chance
> to get Fedora on my BBB yet, so I don't know what version of u-boot is
> used/recommended in the image but I recall hearing about this in the
> OpenBSD mailing list:
> "The last version of u-boot includes some important changes for the users
> of BBB. With this version, the BBB runs at 1Ghz (now is running at
> 550mhz) when the board is connected to the power connector. The code was
> developed by various developers of TI, so it's safe."
> http://marc.info/?l=openbsd-arm&m=138100865002079&w=2

Hmm... I also ran dhrystone and the speed in Fedora is 0.564 times the
speed in Debian, pretty close to the 550/1000 ratio.

Tomorrow I'll also see if using a standard power supply makes any
difference (I now use a mini-USB charger for all tests).

--    Jos Vos <jos at xos.nl>
--    X/OS Experts in Open Systems BV   |   Phone: +31 20 6938364
--    Amsterdam, The Netherlands        |     Fax: +31 20 6948204

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