Average: all 0.33 0.00 0.17 0.00 0.00 99.50
sar -u Displays CPU usage for the current day that was collected until that point.
sar -u 1 3 Displays real time CPU usage every 1 second for 3 times.
sar -u ALL Same as “sar -u” but displays additional fields.
sar -u ALL 1 3 Same as “sar -u 1 3″ but displays additional fields.
sar -u -f /var/log/sa/sa10 Displays CPU usage for the 10day of the month from the sa10 file.
### 独立 CPU 的 CPU 利用率
$ sar -P ALL 1 1 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
01:34:12 PM CPU %user %nice %system %iowait %steal %idle 01:34:13 PM all 11.69 0.00 4.71 0.69 0.00 82.90 01:34:13 PM 0 35.00 0.00 6.00 0.00 0.00 59.00 01:34:13 PM 1 22.00 0.00 5.00 0.00 0.00 73.00 01:34:13 PM 2 3.00 0.00 1.00 0.00 0.00 96.00 01:34:13 PM 3 0.00 0.00 0.00 0.00 0.00 100.00
$ sar -P 1 1 1 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
01:36:25 PM CPU %user %nice %system %iowait %steal %idle 01:36:26 PM 1 8.08 0.00 2.02 1.01 0.00 88.89
sar -P ALL Displays CPU usage broken down by all cores for the current day.
sar -P ALL 1 3 Displays real time CPU usage for ALL cores every 1 second for 3 times (broken down by all cores).
sar -P 1 Displays CPU usage for core number 1 for the current day.
sar -P 1 1 3 Displays real time CPU usage for core number 1, every 1 second for 3 times.
sar -P ALL -f /var/log/sa/sa10 Displays CPU usage broken down by all cores for the 10day day of the month from sa10 file.
### 内存空闲和使用率
$ sar -r 1 3 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
07:28:06 AM kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact 07:28:07 AM 6209248 2097432 25.25 189024 1796544 141372 0.85 1921060 88204 07:28:08 AM 6209248 2097432 25.25 189024 1796544 141372 0.85 1921060 88204 07:28:09 AM 6209248 2097432 25.25 189024 1796544 141372 0.85 1921060 88204 Average: 6209248 2097432 25.25 189024 1796544 141372 0.85 1921060 88204
sar -r
sar -r 1 3
sar -r -f /var/log/sa/sa10
### 已使用的 Swap 空间
$ sar -S 1 3 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
07:31:06 AM kbswpfree kbswpused %swpused kbswpcad %swpcad 07:31:07 AM 8385920 0 0.00 0 0.00 07:31:08 AM 8385920 0 0.00 0 0.00 07:31:09 AM 8385920 0 0.00 0 0.00 Average: 8385920 0 0.00 0 0.00
sar -S
sar -S 1 3
sar -S -f /var/log/sa/sa10
### 综合 I/O 活动数据
tps – Transactions per second (this includes both read and write)
rtps – Read transactions per second
wtps – Write transactions per second
bread/s – Bytes read per second
bwrtn/s – Bytes written per second
$ sar -b 1 3 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
01:56:28 PM tps rtps wtps bread/s bwrtn/s 01:56:29 PM 346.00 264.00 82.00 2208.00 768.00 01:56:30 PM 100.00 36.00 64.00 304.00 816.00 01:56:31 PM 282.83 32.32 250.51 258.59 2537.37 Average: 242.81 111.04 131.77 925.75 1369.90
sar -b
sar -b 1 3
sar -b -f /var/log/sa/sa10
### 独立的块设备 I/O 活动数据
$ sar -d 1 1 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
01:59:45 PM DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util 01:59:46 PM dev8-0 1.01 0.00 0.00 0.00 0.00 4.00 1.00 0.10 01:59:46 PM dev8-1 1.01 0.00 0.00 0.00 0.00 4.00 1.00 0.10 01:59:46 PM dev120-64 3.03 64.65 0.00 21.33 0.03 9.33 5.33 1.62 01:59:46 PM dev120-65 3.03 64.65 0.00 21.33 0.03 9.33 5.33 1.62 01:59:46 PM dev120-0 8.08 0.00 105.05 13.00 0.00 0.38 0.38 0.30 01:59:46 PM dev120-1 8.08 0.00 105.05 13.00 0.00 0.38 0.38 0.30 01:59:46 PM dev120-96 1.01 8.08 0.00 8.00 0.01 9.00 9.00 0.91 01:59:46 PM dev120-97 1.01 8.08 0.00 8.00 0.01 9.00 9.00 0.91
加 -p 选项显示实际的设备名字
$ sar -p -d 1 1 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
01:59:45 PM DEV tps rd_sec/s wr_sec/s avgrq-sz avgqu-sz await svctm %util 01:59:46 PM sda 1.01 0.00 0.00 0.00 0.00 4.00 1.00 0.10 01:59:46 PM sda1 1.01 0.00 0.00 0.00 0.00 4.00 1.00 0.10 01:59:46 PM sdb1 3.03 64.65 0.00 21.33 0.03 9.33 5.33 1.62 01:59:46 PM sdc1 3.03 64.65 0.00 21.33 0.03 9.33 5.33 1.62 01:59:46 PM sde1 8.08 0.00 105.05 13.00 0.00 0.38 0.38 0.30 01:59:46 PM sdf1 8.08 0.00 105.05 13.00 0.00 0.38 0.38 0.30 01:59:46 PM sda2 1.01 8.08 0.00 8.00 0.01 9.00 9.00 0.91 01:59:46 PM sdb2 1.01 8.08 0.00 8.00 0.01 9.00 9.00 0.91
sar -d
sar -d 1 3
sar -d -f /var/log/sa/sa10
sar -p -d
### 展示每秒上下文切换
$ sar -w 1 3 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
08:32:24 AM proc/s cswch/s 08:32:25 AM 3.00 53.00 08:32:26 AM 4.00 61.39 08:32:27 AM 2.00 57.00
sar -w
sar -w 1 3
sar -w -f /var/log/sa/sa10
### 运行队列和系统负载报告
$ sar -q 1 3 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
06:28:53 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked 06:28:54 AM 0 230 2.00 3.00 5.00 0 06:28:55 AM 2 210 2.01 3.15 5.15 0 06:28:56 AM 2 230 2.12 3.12 5.12 0 Average: 3 230 3.12 3.12 5.12 0
sar -q
sar -q 1 3
sar -q -f /var/log/sa/sa10
### 网络统计报告
sar -n KEYWORD
KEYWORD 说明：
DEV – Displays network devices vital statistics for eth0, eth1, etc., EDEV – Display network device failure statistics NFS – Displays NFS client activities NFSD – Displays NFS server activities SOCK – Displays sockets in use for IPv4 IP – Displays IPv4 network traffic EIP – Displays IPv4 network errors ICMP – Displays ICMPv4 network traffic EICMP – Displays ICMPv4 network errors TCP – Displays TCPv4 network traffic ETCP – Displays TCPv4 network errors UDP – Displays UDPv4 network traffic SOCK6, IP6, EIP6, ICMP6, UDP6 are for IPv6 ALL – This displays all of the above information. The output will be very long.
$ sar -n DEV 1 1 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
01:11:13 PM IFACE rxpck/s txpck/s rxbyt/s txbyt/s rxcmp/s txcmp/s rxmcst/s 01:11:14 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:11:14 PM eth0 342.57 342.57 93923.76 141773.27 0.00 0.00 0.00 01:11:14 PM eth1 0.00 0.00 0.00 0.00 0.00 0.00 0.00
### 使用开始时间展示 sar 数据
$ sar -q -f /var/log/sa/sa23 -s 10:00:01 Linux 2.6.18-194.el5PAE (dev-db) 03/26/2011 i686 (8 CPU)
10:00:01 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked 10:10:01 AM 0 127 2.00 3.00 5.00 0 10:20:01 AM 0 127 2.00 3.00 5.00 0 ... 11:20:01 AM 0 127 5.00 3.00 3.00 0 12:00:01 PM 0 127 4.00 2.00 1.00 0
