[PATCH 0/3] RFC: fix bug http://docs.openmoko.org/trac/ticket/1884
Werner Almesberger
werner at openmoko.org
Sun Nov 16 21:28:30 CET 2008
I wrote:
> One oddity: when I ran my performance tests to see how much of a
> difference single-bit mode made (almost disappointingly, it's only
> a bit slower, ~645kB/s host to neo, and ~665kB/s neo to host), the
> receiver hung in one test run. That's the first time I ever saw
> such a problem.
>
> Wonder if this was just a freak accident ... well, I have a little
> torture test set up for tonight that will tell.
In 500 transfers host->neo, 499 were successful while one failed
because the receiver wasn't ready. This seems to be a flaw in my
test setup then, and not a WLAN problem. No problems in the
opposite direction.
In the original test that hung (i.e., the one because of which I
did the torture test), it seems that the Neo temporarily lost
association:
(good) ttcp-t: 16777216 bytes in 25.83 real seconds = 634.35 KB/sec +++
(bad) ttcp-t: 9699328 bytes in 1055.29 real seconds = 8.98 KB/sec +++
(after) ttcp-t: connect: No route to host
(after) ttcp-t: connect: No route to host
...
So, no smoking gun here. Maybe Murphy was just pulling my leg.
- Werner
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