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现在机器负载很大,机器是cpu 2*xeon3 机器上的主要程序是mysql和nfs服务．
[root@nfs ~]# free -m
total used free shared buffers cached
Mem: 2026 1986 40 0 9 1322
-/+ buffers/cache: 653 1372
Swap: 4094 0 4094.0
top - 13:29:31 up 431 days, 22:12, 3 users, load average: 26.92, 32.34, 32.00
Tasks: 188 total, 19 running, 169 sleeping, 0 stopped, 0 zombie
Cpu(s): 44.7% us, 55.2% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.2% hi, 0.0% si
Mem: 2074736k total, 2018764k used, 55972k free, 9732k buffers
Swap: 4192912k total, 144k used, 4192768k free, 1359428k cached
25282 mysql 25 0 622m 534m 3972 R 59 26.4 0:09.16 mysqld
25192 mysql 25 0 622m 534m 3972 R 46 26.4 0:30.94 mysqld
25271 mysql 17 0 622m 534m 3972 R 43 26.4 0:27.72 mysqld
25191 mysql 19 0 622m 534m 3972 S 42 26.4 0:11.48 mysqld
25178 mysql 25 0 622m 534m 3972 R 38 26.4 0:44.69 mysqld
25132 mysql 25 0 622m 534m 3972 R 34 26.4 0:44.83 mysqld
25269 mysql 24 0 622m 534m 3972 S 34 26.4 0:29.03 mysqld
25288 mysql 17 0 622m 534m 3972 R 28 26.4 0:00.97 mysqld
25278 mysql 15 0 622m 534m 3972 S 6 26.4 0:07.76 mysqld
25248 mysql 16 0 622m 534m 3972 S 4 26.4 0:11.90 mysqld
25239 mysql 17 0 622m 534m 3972 D 3 26.4 0:12.75 mysqld
24594 mysql 15 0 622m 534m 3972 D 2 26.4 0:28.58 mysqld
6076 mysql 15 0 622m 534m 3972 S 1 26.4 20:41.96 mysqld
25064 mysql 17 0 622m 534m 3972 D 1 26.4 0:13.94 mysqld
25107 mysql 17 0 622m 534m 3972 D 1 26.4 0:34.71 mysqld
25207 mysql 16 0 622m 534m 3972 D 1 26.4 0:58.00 mysqld
25237 mysql 15 0 622m 534m 3972 D 1 26.4 0:21.28 mysqld
25059 mysql 16 0 622m 534m 3972 D 1 26.4 0:10.96 mysqld
25091 mysql 18 0 622m 534m 3972 D 1 26.4 0:04.30 mysqld
25129 mysql 17 0 622m 534m 3972 D 1 26.4 0:12.76 mysqld
25256 mysql 17 0 622m 534m 3972 D 1 26.4 0:02.33 mysqld
25265 mysql 17 0 622m 534m 3972 D 1 26.4 0:03.97 mysqld
73 root 15 0 0 0 0 S 1 0.0 664:59.42 kswapd0
23310 root 15 0 0 0 0 S 1 0.0 755:22.91 nfsd
23311 root 15 0 0 0 0 S 1 0.0 756:46.59 nfsd
25103 mysql 18 0 622m 534m 3972 D 1 26.4 0:03.93 mysqld
25114 mysql 15 0 622m 534m 3972 D 1 26.4 0:13.68 mysqld
25205 mysql 18 0 622m 534m 3972 D 1 26.4 0:23.29 mysqld
25220 mysql 15 0 622m 534m 3972 D 1 26.4 0:21.40 mysqld
25260 mysql 17 0 622m 534m 3972 D 1 26.4 0:00.41 mysqld
24358 mysql 15 0 622m 534m 3972 D 0 26.4 0:02.84 mysqld
25216 mysql 18 0 622m 534m 3972 D 0 26.4 0:07.61 mysqld 43.49, 37.22, 31.43[root@nfs ~]# vmstat 10
procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
14 19 144 18980 10020 1403080 0 0 3 6 0 0 8 3 66 23
9 19 144 20772 10136 1417524 0 0 6329 34 2600 3180 52 48 0 0
12 19 144 28324 9984 1414816 0 0 6315 17 2586 3085 44 49 2 6
10 19 144 15524 9932 1410708 0 0 6161 22 2602 3021 46 54 0 0
5 19 144 27372 10232 1425228 0 0 6074 93 2549 3050 40 44 6 10
2 17 144 31916 10312 1416828 0 0 5546 154 2392 2860 41 47 4 8
10 17 144 23980 10264 1404396 0 0 5808 141 2485 3044 40 45 6 8
11 18 144 16108 10252 1388808 0 0 6050 99 2566 3149 40 48 5 7
请问一下是否是MYSQL程序的问题还是硬盘的I/O出现问题。是否需要重新启动机器。 |
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发表于 2008-09-17 15:11
发表于 2008-09-17 16:11
