Hi Bruce.
On 13-12-02 12:18 PM, Paul Butler wrote:
On Mon, Dec 02, 2013 at 12:12:20PM -0500, Bruce Ashfield wrote:
On 13-12-02 12:10 PM, Paul Butler wrote:
The following changes since commit ee9480cd91b2b46325a2da9aa6ae779d8e4163c0:
Merge branch 'standard/base' into standard/preempt-rt/base (2013-11-25
15:11:10 -0500)
are available in the git repository at:
Before merging new -rt support, I'd like to see what sort of latency
and driver testing has been done on the board.
There's no sense merging support if it has latency spikes, or the
drivers haven't been tested for locking safety and semantics.
Ok, same story for 3.4 -rt branch?
Yep.
I've posted a summary of the test results and test logs for the tests
done on the 3.4 and 3.10 standard + preempt-rt axxia kernels.
acp34xx test summary:
https://docs.google.com/uc?id=0B-6CyQ6W462IeGM2VDVUR2FLLW8&export=download&revid=0B-6CyQ6W462IL0hRQ3BlT0FVelc0VHMyTzdtZGRWNWRkYkdVPQ
axm55xx test summary:
https://docs.google.com/uc?id=0B-6CyQ6W462ITmY1RFpzTXVDY1U&export=download&revid=0B-6CyQ6W462IcndiYzh2cXhhQlJVVERMcWVmUnVzWnc4YXhnPQ
Test logs (acp34xx + axm55xx):
https://docs.google.com/uc?id=0B-6CyQ6W462ISzVBQmRwMEhndVU&export=download&revid=0B-6CyQ6W462ISDVYUEVtbUVBTnNia2FZYkd5SEltUm9VOU1rPQ
I'll add some comments for the cyclictest graphs. The latency variance in
the preempt-rt kernels is lower than the standard kernels (as one would expect)
but there are a few cases where the average latency is higher in the preempt-rt
kernels (axm55xx 3.10-rt). I do not see any huge outliers (i.e. a latency
sample
that's several hundred usecs) in the preempt-rt graphs, which to me indicates
that there are no latency spikes in the preempt-rt kernels.
Hong
Bruce
....snip
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