1. sar ,
每两秒刷新一次,总共5次
(root@dbhost01 ~), 5 # sar 2
Linux 2.6.32-504.el6。x86_64 (dbhost01) 03/30/2018 _x86_64_(4个CPU)
02:53:15 PM ,,CPU ,,% user ,,% nice ,% system ,% iowait ,% steal ,,%闲置
02:53:17 PM ,,all ,,0.66,,,0.00,,,1.72,,,0.66,,,0.00,,,96.96
02:53:19 PM ,,all ,,1.34,,,0.00,,,3.35,,,0.80,,,0.00,,,94.51
02:53:21 PM ,,all ,,0.79,,,0.00,,,1.59,,,1.45,,,0.00,,,96.17
02:53:23 PM ,,all ,,0.40,,,0.00,,,2.00,,,0.80,,,0.00,,,96.80
02:53:25 PM ,,all ,,0.66,,,0.00,,,1.85,,,0.79,,,0.00,,,96.70
平均:,,,all ,,0.77,,,0.00,,,2.10,,,0.90,,,0.00,,,96.23
2. 前
,,最高——按照内存降序
,,(root@dbhost01 ~) #高层——
前15:00:54 up 6:04,,1用户,平均负载:0.31,0.19,0.11
任务:306,,,305跑步、睡觉,,,0停止,,0僵尸
Cpu (s):,7.8%的美国,,sy 2.4%,,0.0%的镍,88.9%的id,,0.8%,佤邦,嗨,0.0%,如果0.1%,,圣
0.0% Mem:,4048972 k,大敌;3848576 k,,,200396 k免费,,134844 k缓冲区
交换:4194300 k,,,使用1788 k,大敌;4192512 k免费的,,1835360 k缓存
3.vmstat
vmstat用于显示虚拟内存,内核线程,磁盘,系统进程,CPU活动等统计信息。
需要安装sysstat工具。
(root@dbhost01 ~) #才能vmstat
效果- - - - - - - - - - -记忆- - - - - - - - - - - -交换- - - - - - - io系统- - - - - - - - - - - - cpu - - - - - -
,r b ,swpd ,free ,buff cache ,si ,so ,bi ,bo ,拷贝;我们,cs sy id佤邦圣
,20,,1788 202508 135064 1835920,0,,0,,32,,26日,,96年276年,1,95,1,0
(root@dbhost01 ~) #,
[root@dbhost01 ~] # vmstat 2 5
效果- - - - - - - - - - -记忆- - - - - - - - - - - -交换- - - - - - - io系统- - - - - - - - - - - - cpu - - - - - -
,r b ,swpd ,free ,buff cache ,si ,so ,bi ,bo ,拷贝;我们,cs sy id佤邦圣
,00,,1788 202336 135068 1836000,0,,0,,32,,26日,,97年276年,1,95,1,0
,00,,1788 202624 135068 1836000,0,,0,,25,,29日4012 6682,0,98,1,0
,00,,1788 202624 135072 1836004,0,,0,,57,,87 4003 6685,0,98,1,0
,10,,1788 202508 135072 1836004,0,,0,,57,,33 4402 7353,1,98,0,0
,00,,1788 202540 135076 1836004,0,,0,,33,,47 4002 6674,0,98,1,0
,,,,,,
4. lsof(打开文件列表)
[root@dbhost01 ~] # lsof | grep 1521
certmonge 2348年,,,root ,16 r ,,FIFO ,,,,,,,0 8,,,,0 t0 ,,15212管
certmonge 2348年,,,root ,18 r ,,FIFO ,,,,,,,0 8,,,,0 t0 ,,15218管
gipcd.bin 2754年,,,grid 109 u ,,unix 0 xffff880139152180 ,,,0 t0 ,,36936套接字
5. tcpdump
,,tcpdump - eth2
15:24:28.777779 IP dbhost01。ssh祝辞192.168.2.82.50990:旗帜(P。],seq 393080:393596 ack 105年,赢得148年选项(nop, nop, TS val 22996360 ecr 2443327),长度为516
15:24:28.777809 IP dbhost01。ssh祝辞192.168.2.82.50990:旗帜(P。null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null
每两秒刷新一次,总共5次
(root@dbhost01 ~), 5 # sar 2
Linux 2.6.32-504.el6。x86_64 (dbhost01) 03/30/2018 _x86_64_(4个CPU)
02:53:15 PM ,,CPU ,,% user ,,% nice ,% system ,% iowait ,% steal ,,%闲置
02:53:17 PM ,,all ,,0.66,,,0.00,,,1.72,,,0.66,,,0.00,,,96.96
02:53:19 PM ,,all ,,1.34,,,0.00,,,3.35,,,0.80,,,0.00,,,94.51
02:53:21 PM ,,all ,,0.79,,,0.00,,,1.59,,,1.45,,,0.00,,,96.17
02:53:23 PM ,,all ,,0.40,,,0.00,,,2.00,,,0.80,,,0.00,,,96.80
02:53:25 PM ,,all ,,0.66,,,0.00,,,1.85,,,0.79,,,0.00,,,96.70
平均:,,,all ,,0.77,,,0.00,,,2.10,,,0.90,,,0.00,,,96.23
2. 前
,,最高——按照内存降序
,,(root@dbhost01 ~) #高层——
前15:00:54 up 6:04,,1用户,平均负载:0.31,0.19,0.11
任务:306,,,305跑步、睡觉,,,0停止,,0僵尸
Cpu (s):,7.8%的美国,,sy 2.4%,,0.0%的镍,88.9%的id,,0.8%,佤邦,嗨,0.0%,如果0.1%,,圣
0.0% Mem:,4048972 k,大敌;3848576 k,,,200396 k免费,,134844 k缓冲区
交换:4194300 k,,,使用1788 k,大敌;4192512 k免费的,,1835360 k缓存
3.vmstat
vmstat用于显示虚拟内存,内核线程,磁盘,系统进程,CPU活动等统计信息。
需要安装sysstat工具。
(root@dbhost01 ~) #才能vmstat
效果- - - - - - - - - - -记忆- - - - - - - - - - - -交换- - - - - - - io系统- - - - - - - - - - - - cpu - - - - - -
,r b ,swpd ,free ,buff cache ,si ,so ,bi ,bo ,拷贝;我们,cs sy id佤邦圣
,20,,1788 202508 135064 1835920,0,,0,,32,,26日,,96年276年,1,95,1,0
(root@dbhost01 ~) #,
[root@dbhost01 ~] # vmstat 2 5
效果- - - - - - - - - - -记忆- - - - - - - - - - - -交换- - - - - - - io系统- - - - - - - - - - - - cpu - - - - - -
,r b ,swpd ,free ,buff cache ,si ,so ,bi ,bo ,拷贝;我们,cs sy id佤邦圣
,00,,1788 202336 135068 1836000,0,,0,,32,,26日,,97年276年,1,95,1,0
,00,,1788 202624 135068 1836000,0,,0,,25,,29日4012 6682,0,98,1,0
,00,,1788 202624 135072 1836004,0,,0,,57,,87 4003 6685,0,98,1,0
,10,,1788 202508 135072 1836004,0,,0,,57,,33 4402 7353,1,98,0,0
,00,,1788 202540 135076 1836004,0,,0,,33,,47 4002 6674,0,98,1,0
,,,,,,
4. lsof(打开文件列表)
[root@dbhost01 ~] # lsof | grep 1521
certmonge 2348年,,,root ,16 r ,,FIFO ,,,,,,,0 8,,,,0 t0 ,,15212管
certmonge 2348年,,,root ,18 r ,,FIFO ,,,,,,,0 8,,,,0 t0 ,,15218管
gipcd.bin 2754年,,,grid 109 u ,,unix 0 xffff880139152180 ,,,0 t0 ,,36936套接字
5. tcpdump
,,tcpdump - eth2
15:24:28.777779 IP dbhost01。ssh祝辞192.168.2.82.50990:旗帜(P。],seq 393080:393596 ack 105年,赢得148年选项(nop, nop, TS val 22996360 ecr 2443327),长度为516
15:24:28.777809 IP dbhost01。ssh祝辞192.168.2.82.50990:旗帜(P。null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null null
