Hi, On Mon, Jan 02, 2012 at 01:29:39PM +0400, Yaroslav wrote: > About point (2) I have questions:
You would probably learn a lot reading "What every programmer should know about memory?" by U. Drepper [http://people.redhat.com/drepper/cpumemory.pdf]. In particular Section 3.3.4 explains how CPU cache works in a multi-processor setup (Section 3 is about CPU cache in general). I think it would answer your questions and give you a good overall view of the topic. > (2.1) At what moments exactly this syncronizations occur? Is it on every > assembler instruction, or on every write to memory (i.e. on most variable > assignments, all memcpy's, etc.), or is it only happening when two threads > simultaneously work on the same memory area (how narrow is definition of > the area?)? Only on writes, with the granularity of a cache line. No idea about you other questions, sorry. Best regards, -- Gabriel _______________________________________________ libev mailing list [email protected] http://lists.schmorp.de/cgi-bin/mailman/listinfo/libev
