Hi All. Hope you can still help here. Solaris 11 Express. x86 platform E6600 with 6GB of RAM
I have a fairly new S11E box Im using as a file server. 3x1.5TB HDD's in a raidz pool. When I first set it up I was getting 110MB/sec writes across gigabit network via SMB shares. I noticed recently that write rate has dropped off and through testing now I am getting 35MB/sec writes. The pool is around 50-60% full. I am getting a CONSTANT 30-35% kernel cpu utilisation, even if the machine is idle. I do not know if this was the case when the write performance was better. I have tried reading from the server to a HDD on a windows client and I get 50+MB/sec which is probably the max that that HDD can sustain on a write. It's interesting that when I boot into the S11E live CD, my CPU idles at 100% idle, but as soon as I install to HDD, it gets that 30-35% kernel utilisation. I do not know if the CPU utilisation and the bad write performance is related. I did the following while the system was idle. an@Nas:~# lockstat -gkIW sleep 60 Profiling interrupt: 11648 events in 60.038 seconds (194 events/sec) Count genr cuml rcnt nsec Hottest CPU+PIL Caller 10534 90% ---- 0.00 165530 cpu[1] thread_start 9750 84% ---- 0.00 147359 cpu[1] idle 8128 70% ---- 0.00 94807 cpu[1] cpu_idle_mwait 7852 67% ---- 0.00 84202 cpu[1] i86_mwait 2541 22% ---- 0.00 407347 cpu[1]+11 cpupm_utilization_event 2541 22% ---- 0.00 407347 cpu[1]+11 cpupm_change_state 2540 22% ---- 0.00 407412 cpu[1]+11 cpupm_plat_change_state 2539 22% ---- 0.00 407466 cpu[1]+11 cpupm_state_change 2530 22% ---- 0.00 408167 cpu[1]+11 pg_ev_thread_swtch 2512 22% ---- 0.00 401944 cpu[1]+11 swtch 2511 22% ---- 0.00 407944 cpu[1]+11 cmt_ev_thread_swtch_pwr 2509 22% ---- 0.00 408047 cpu[1]+11 speedstep_power 1311 11% ---- 0.00 421383 cpu[0]+11 speedstep_pstate_transition 1307 11% ---- 0.00 422634 cpu[0]+11 write_ctrl 1307 11% ---- 0.00 422634 cpu[0]+11 cpu_acpi_write_port 1306 11% ---- 0.00 422939 cpu[0]+11 outw 1237 11% ---- 0.00 392091 cpu[1]+11 do_splx 1197 10% ---- 0.00 393779 cpu[1]+11 xc_call 1197 10% ---- 0.00 393779 cpu[1]+11 xc_common hope that might help. -- This message posted from opensolaris.org _______________________________________________ opensolaris-help mailing list opensolaris-help@opensolaris.org
