Hi Omer, On Wed, Apr 13, 2011 at 04:07:42PM +0300, Omer Zak wrote: > The system has several such processes, so it is desirable to have an > inter-process mechanism having the absolute minimum overhead for > unidirectional data transfers from measuring processes (like process M) > to action taking processes (such as process A).
[snip] > The riddle: > 1. If the operating system being used is Linux, what other mechanisms > (besides turning off interrupts) are available to single-processor > systems to accomplish this? > 2. If the system has a multi-core processor or several processors, which > low overhead synchronization method can be used to accomplish this? You may try the Userspace RCU library, http://lttng.org/urcu. See also http://lwn.net/Articles/369567/ for a discussion about optimizing the expensive memory barriers. baruch -- ~. .~ Tk Open Systems =}------------------------------------------------ooO--U--Ooo------------{= - bar...@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il - _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
