> r...@nas2:/# lockstat -kIW -D 20 dd if=/dev/rdsk/c8t0d0s0 of=/dev/null > bs=65536 count=16384 ... > 2921 26% 56% 0.00 579421 cpu[0]+11 do_splx > 2680 24% 80% 0.00 550466 cpu[1]+11 outw
Ok, seems the kernel is consuming lots of time due to some i/o port access, for a driver using IPL 11. This might be similar to defect 12799 "SNV_127 Opensolaris spend 30-40% of CPU time in kernel" http://defect.opensolaris.org/bz/show_bug.cgi?id=12799 Can you try to find out who's calling "outw" ? lockstat -kIW -f outw -s 8 dd if=/dev/rdsk/c8t0d0s0 of=/dev/null bs=65536 count=16384 -- This message posted from opensolaris.org _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
