On Fri, Feb 17, 2012 at 12:47:51PM +0200, Jukka Marin wrote: > I guess I should try forcing the timer tick to 1ooo Hz, maybe I can cut > off the extra delay that way. (I'm running a generic 5.1 kernel on Soekris > net5501.) With HZ=1000 the timeout works better, number of modbus transactions per second was almost doubled.. Jukka