Nick Piggin wrote:
So where is the down_write coming from in this workload, I wonder? Heap management? What syscalls?
Trying to answer this question, I straced the mysql threads that showed up in top when running a single threaded sysbench workload. There were no mmap, munmap, brk, mprotect or madvise system calls in the trace. MySQL has me puzzled, but it seems to have some other people interested too. I think I'll go play a bit with ebizzy now, to see how other workloads are affected by our kernel changes. - 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/
