内存跑哪去了？
一台sol10的机器，物理内存128G，used mem+free mem大概只有60G不到，机器特别慢。> prstat -a
PID USERNAMESIZE RSS STATEPRI NICE TIMECPU PROCESS/NLWP
8018 root 18M648K cpu15 50 0 1791:58:3 1.6% tar/1
12855 root 18M648K cpu2 50 0 1791:48:2 1.6% tar/1
9869 npmuser 95M 72M cpu30 0 2 0:38:22 1.4% perl/1
9940 npmuser 95M 72M cpu27 44 2 0:40:42 1.4% perl/1
9963 npmuser 95M 76M cpu6 0 2 0:35:47 1.4% perl/1
21484 informix 56G 56G sleep 59-10 740:01:29 1.4% oninit/2
21458 informix 56G 56G cpu46 59-10 2317:01:5 1.3% oninit/2
21461 informix 56G 56G sleep 59-10 2357:56:4 1.3% oninit/2
21463 informix 56G 56G cpu23 30-10 2319:04:3 1.3% oninit/2
21467 informix 56G 56G cpu1 30-10 2149:06:1 1.3% oninit/2
21456 informix 56G 56G cpu63 30-10 2328:53:4 1.3% oninit/2
21459 informix 56G 56G cpu22 40-10 2384:45:0 1.2% oninit/2
21457 informix 56G 56G cpu13 30-10 2404:55:0 1.2% oninit/2
21471 informix 56G 56G cpu12 59-10 1908:07:1 1.2% oninit/2
21478 informix 56G 56G cpu41 30-10 1074:21:5 1.2% oninit/2
21473 informix 56G 56G cpu5 30-10 1685:41:5 1.2% oninit/2
21465 informix 56G 56G cpu24 30-10 2257:01:5 1.2% oninit/2
21482 informix 56G 56G cpu32 41-10 797:41:19 1.2% oninit/2
21475 informix 56G 56G cpu4 30-10 1456:42:0 1.1% oninit/2
21469 informix 56G 56G cpu20 30-10 1997:19:3 1.1% oninit/2
21462 informix 56G 56G sleep 59-10 2255:38:5 1.1% oninit/2
21319 informix 56G 56G cpu26 59-10 1765:31:0 1.1% oninit/2
21466 informix 56G 56G cpu42 59-10 2113:47:0 1.1% oninit/2
21468 informix 56G 56G cpu48 30-10 1988:00:4 1.1% oninit/2
21464 informix 56G 56G sleep 59-10 2202:29:3 1.1% oninit/2
21460 informix 56G 56G sleep 59-10 2290:09:5 1.1% oninit/2
21477 informix 56G 56G cpu14 30-10 1230:18:4 1.0% oninit/2
21472 informix 56G 56G cpu60 30-10 1700:53:1 1.0% oninit/2
21440 informix 56G 56G sleep 59-10 1653:50:5 1.0% oninit/2
21474 informix 56G 56G cpu34 59-10 1488:40:1 1.0% oninit/2
NPROC USERNAMESWAP RSS MEMORY TIMECPU
67 informix 56G 56G 44% 53464:44:34%
98 npmuser1127M809M 0.6% 2:31:08 8.5%
108 root 678M275M 0.2% 3696:20:4 3.2%
1 nobody 1096K 2304K 0.0% 0:00:01 0.0%
2 daemon 3320K 5128K 0.0% 2:20:29 0.0%
8 nrmuser3656K 9376K 0.0% 0:00:01 0.0%
> top
load averages: 32.50, 27.50, 28.33 AHDB3 10:51:53
292 processes: 233 sleeping, 7 running, 5 zombie, 10 stopped, 37 on cpu
CPU states: 41.2% idle, 48.3% user, 10.5% kernel,0.0% iowait,0.0% swap
Memory: 128G real, 978M free, 70.2G swap in use, 68.9G swap free
PID USERNAME THR PR NCESIZE RES STATE TIME FLTS CPU COMMAND
8018 root 10 0 0K 0K cpu25 1792.0 01.56% tar
12855 root 10 0 0K 0K cpu22 1791.8 01.56% tar
21478 informix 2 30 -10 0K 0K cpu55 1074.4 01.41% oninit
9869 npmuser 10 2 94.8M 71.9M cpu0738:40 81.41% perl
9963 npmuser 10 2 94.8M 75.9M cpu0536:05 41.41% perl
9940 npmuser 10 2 94.8M 71.8M cpu1441:00 31.40% perl
21458 informix 2 30 -10 0K 0K cpu49 2317.0 21.32% oninit
21463 informix 2 30 -10 0K 0K sleep 2319.1 41.30% oninit
21467 informix 2 30 -10 0K 0K cpu18 2149.1 11.30% oninit
21484 informix 2 40 -10 0K 0K cpu57 740.0H 21.30% oninit
21457 informix 2 30 -10 0K 0K cpu17 2404.9 01.26% oninit
21465 informix 2 30 -10 0K 0K cpu13 2257.0 41.25% oninit
21473 informix 2 30 -10 0K 0K cpu08 1685.7 11.22% oninit
21469 informix 2 30 -10 0K 0K cpu23 1997.3 31.21% oninit
21480 informix 2 40 -10 0K 0K cpu43 906.8H 121.21% oninit
Total: 284 processes, 653 lwps, load averages: 31.35, 27.03, 28.19
用的zfs？
贴这个命令出来看看：
# echo "::memstat" | mdb -k # echo "::memstat" | mdb -k 等了快半个小时没输出就把他终止掉了。
没有用zfs，机器重启之后正常了。
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