Date: Sat, 07 Sep 2013 10:19:21 -0400 From: George Mitchell <george+freebsd@m5p.com> To: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: mmcsd on RPi Message-ID: <522B35E9.2000002@m5p.com>
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While performing "disk" operations in the process of building ports on my Raspberry Pi, I observe idle times in the 80-98% range, with the processes doing the work in the biowr or biord states in the "top" display. Interrupt time varies from 1-8% with system time in the 1-3% range. Could this be due to my having a crappy SD card, or is it inherent in the current mmcsd driver on ARM? Is there anything I can do to help speed up the driver? My continuing thanks go to the many developers on the ARM project, and especially the ones who have made the Raspberry Pi a viable FreeBSD platform. -- George
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