Re: Thread behavior in 7.8.3

18 Jan 2015

      Donn,

True, but in that case I was using a driver for the Aardvark, and my current two test cases use:

A) DC1613A from LTC
B) /dev/i2c driver with FFI wrapper I wrote

Case A uses the haskell usb package and libusb. I suppose SIGVALRM could be in used in the libusb driver. I know for sure it is not used by my I2C stuff, unless it is behind the /dev/i2c user mode calls.

But interesting. Obviously the scheduler is using timers from the OS.

Is it really an advantage not to use OS threads all around? Is there anyway to enable such behavior to see if things are better?

Mike

On Jan 17, 2015, at 11:00 PM, Donn Cave  wrote:
...
Quoth Michael Jones ,
...
...
...
5) What does -V0 do that makes a problem program run?
Well, there's that SIGVTALRM barrage, you may remember we went
over that mid-August.  I expect there are other effects.
Donn