On Sun, 8 Jul 2007, Andi Kleen wrote: > I would say the main drawback of switchable and queued locks > would be also that they require a larger spinlock_t thus increasing > cache usage
Right. Zoran Radovic has shown that queued locks are inferior to other approaches. The best approach that he found in his research were the HBO locks that are somewhat more intelligent form of spinlocks. http://user.it.uu.se/~zoranr/ http://www.it.uu.se/research/group/uart/projects/nucasynch/ Paper on the issue with measurements: http://www.it.uu.se/research/publications/lic/2003-008/2003-008.pdf - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
