LPC32x0 MMC/SD and DMA interface issues

Hi, During my GSoC work on LPC32x0 port, I've discovered that ARM PL180 MMC/SD controller present in SoC has completely useless PIO mode. That is, controller can't stop card clock when Rx FIFO buffer is full. This leads to permanent Rx overrun errors when CPU doesn't react to arriving data as fas

Re: UMA large allocations issues

On Fri, Jul 22, 2011 at 9:07 PM, Davide Italiano wrote: > Hi. > I'm a student and some time ago I started investigating a bit about > the performance/fragmentation issue of large allocations within the > UMA allocator. > Benckmarks showed up that this problems of performances are mainly > related

Re: DTrace script asserts and kills the other process

Yuri wrote: > I am trying to run this dtrace script: > > #!/usr/sbin/dtrace -s > pid123:libc::entry > { > self->timestmp[probefunc] = timestmp; > } > pid123:libc::return > /self->timestmp[probefunc] != 0/ > { > @function_duration[probefunc] = sum(timestmp - > self->timestmp[probefunc]); timestmp