Lock contention Matt. See what locks are hot: # lockstat -o lockstat.out -D20 sleep 10
Matt V. wrote:
OK, I tried the DTrace script "hotkernel" et the result is: [...] ce`ce_intr 1245 0.4% unix`page_lookup_nowait 1330 0.5% genunix`rm_assize 1448 0.5% genunix`segmap_getmapflt 1578 0.5% genunix`vmu_calculate_seg 1698 0.6% SUNW,UltraSPARC-IV`gettick 1823 0.6% unix`bzero 2157 0.7% unix`page_lookup_create 2209 0.8% SUNW,UltraSPARC-IV`copyin_more 2269 0.8% genunix`avl_walk 2286 0.8% SUNW,UltraSPARC-IV`send_mondo_set 2309 0.8% SUNW,UltraSPARC-IV`copyout_more 2530 0.9% SUNW,UltraSPARC-IV`bcopy 2564 0.9% unix`page_trylock 2711 0.9% unix`mutex_owner_running 3363 1.2% unix`page_exists 6052 2.1% unix`idle 6709 2.3% unix`default_lock_delay 9016 3.1% unix`mutex_enter 11670 4.0% unix`disp_getwork 56868 19.6% unix`mutex_delay_default 96390 33.2% Now, I know that is 'mutex_delay_default' and 'disp_getwork' which work a lot but which process or PID is behind please ? Matt
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