Hi,

just to save my current finding and maybe trigger some feedback:

We just tried both 2.3.x-SVN and trunk with our "reference robot". While
2.3.x behaves fine, weird things happened with trunk /wrt some serial
device. We saw reception timeouts and no serial IRQs.

So I fired up a second box with plain latency test (all the latest: SVN,
2.6.19.2, ipipe-i386-1.6-06):

> [EMAIL PROTECTED] :/root# latency      
> == Sampling period: 100 us
> == Test mode: periodic user-mode task
> == All results in microseconds
> warming up...
> RTT|  00:00:01  (periodic user-mode task, 100 us period, priority 99)
> RTH|-----lat min|-----lat avg|-----lat max|-overrun|----lat best|---lat worst
> RTD| 1299105.405| 1505168.638|  -14316.105|    3671| 1299105.405|  -14316.105
> RTD| 1220704.831| 1779065.782|-1220608.470|    7345| 1220704.831|-1220608.470
> RTD|   14316.105|-1760409.537|-1554398.542|   11018| 1220704.831|-1220608.470
> RTD|   14316.105| 2122222.174|-1966597.124|   14691| 1220704.831|-1220608.470
> RTD|   14316.105| 1709930.735| 1916083.739|   18372| 1220704.831|-1220608.470

Houston, I think we have a problem.

Periodic mode is on, but all skins are using the master time base. I
suspect some time conversion issues. I'll try to dig deeper -- later.

Jan

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