On 10/02/2010 11:09 AM, Gilboa Davara wrote: > On Thu, 2010-09-30 at 10:26 -0700, JD wrote: > >> Granularity applies to the locking scheme in the kernel. >> It is how the kernel must prevent different cors/cpus from >> clobberig the same kernel global data at the same time. >> >> Some locking schemes are coarser than others. There is >> an optimal point where further granularity will decrease >> performance. >> >> I was looking for papers/studies that may have been done >> to see at what degree of granularity the payoff was highest. > Most of the 2.6 kernel no longer uses the BKL (AKA Big kernel lock) and > uses fine grained locking instead, making some code paths better suited > when it comes to operating in heavily-SMP'ed environments (10's of > core). (E.g. IP vs IPX) > > As you are talking about recent hardware (AMD Opteron 6xxx I presume) > with (only) 12 cores, I doubt that you'll hit any major performance > barrier. > > As I said in a previous comment, some additional information on what you > want to do with the machine will be helpful. > I just wanted to read the papers/studies, if they exist somewhere. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
