From 633ce8b80099d5db0184f53bd6a2a7d0f0fc6da0 Mon Sep 17 00:00:00 2001 From: cvsher <478990879@qq.com> Date: Sat, 13 Sep 2014 23:05:27 +0800 Subject: [PATCH] Delete 20140911 Linux Performance Monitoring with Vmstat and Iostat Commands.md MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 翻译完成，删除原文 --- ...itoring with Vmstat and Iostat Commands.md | 246 ------------------ 1 file changed, 246 deletions(-) delete mode 100644 sources/tech/20140911 Linux Performance Monitoring with Vmstat and Iostat Commands.md diff --git a/sources/tech/20140911 Linux Performance Monitoring with Vmstat and Iostat Commands.md b/sources/tech/20140911 Linux Performance Monitoring with Vmstat and Iostat Commands.md deleted file mode 100644 index 5a1183ef28..0000000000 --- a/sources/tech/20140911 Linux Performance Monitoring with Vmstat and Iostat Commands.md +++ /dev/null @@ -1,246 +0,0 @@ -translating by cvsher -Linux Performance Monitoring with Vmstat and Iostat Commands -================================================================================ -This is our on-going series of commands and performance monitoring in **Linux**. **Vmstat** and **Iostat** both commands are available on all major **Unix-like (Linux/Unix/FreeBSD/Solaris)** Operating Systems. - -If **vmstat** and **iostat** commands are not available on your box, please install **sysstat** package. The **vmstat**, **sar** and **iostat** commands are the collection of package included in **sysstat** – the system monitoring tools. The iostat generates reports of **CPU** & all device statistics. You may download and install **sysstat** using source tarball from link [sysstat][1], but we recommend installing through **YUM** command. - -![Linux Performance Monitoring with Vmstat and Iostat](http://www.tecmint.com/wp-content/uploads/2012/09/Linux-VmStat-Iostat-Commands.png) - -Linux Performance Monitoring with Vmstat and Iostat - -### Install Sysstat in Linux ### - - # yum -y install sysstat - -- **vmstat** – Summary information of Memory, Processes, Paging etc. -- **iostat** – Central Processing Unit (CPU) statistics and input/output statistics for devices and partitions. - -### 6 Vmstat Command Examples in Linux ### - -#### 1. List Active and Inactive Memory #### - -In the below example, there are six columns. The significant of the columns are explained in man page of **vmstat** in details. Most important fields are **free** under memory and **si**, **so** under swap column. - - [root@tecmint ~]# vmstat -a - - procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu----- - r b swpd free inact active si so bi bo in cs us sy id wa st - 1 0 0 810420 97380 70628 0 0 115 4 89 79 1 6 90 3 0 - -- **Free** – Amount of free/idle memory spaces. -- **si** – Swaped in every second from disk in Kilo Bytes. -- **so** – Swaped out every second to disk in Kilo Bytes. - -**Note**: If you run **vmstat** without parameters it’ll displays summary report since system boot. - -#### 2. Execute vmstat ‘X’ seconds and (‘N’number of times) #### - -With this command, **vmstat** execute every two seconds and stop automatically after executing six intervals. - - [root@tecmint ~]# vmstat 2 6 - - procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu----- - r b swpd free buff cache si so bi bo in cs us sy id wa st - 0 0 0 810420 22064 101368 0 0 56 3 50 57 0 3 95 2 0 - 0 0 0 810412 22064 101368 0 0 0 0 16 35 0 0 100 0 0 - 0 0 0 810412 22064 101368 0 0 0 0 14 35 0 0 100 0 0 - 0 0 0 810412 22064 101368 0 0 0 0 17 38 0 0 100 0 0 - 0 0 0 810412 22064 101368 0 0 0 0 17 35 0 0 100 0 0 - 0 0 0 810412 22064 101368 0 0 0 0 18 36 0 1 100 0 0 - -#### 3. Vmstat with timestamps #### - -**vmstat** command with **-t** parameter shows timestamps with every line printed as shown below. - - [tecmint@tecmint ~]$ vmstat -t 1 5 - - procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ ---timestamp--- - r b swpd free buff cache si so bi bo in cs us sy id wa st - 0 0 0 632028 24992 192244 0 0 70 5 55 78 1 3 95 1 0 2012-09-02 14:57:18 IST - 1 0 0 632028 24992 192244 0 0 0 0 171 514 1 5 94 0 0 2012-09-02 14:57:19 IST - 1 0 0 631904 24992 192244 0 0 0 0 195 600 0 5 95 0 0 2012-09-02 14:57:20 IST - 0 0 0 631780 24992 192244 0 0 0 0 156 524 0 5 95 0 0 2012-09-02 14:57:21 IST - 1 0 0 631656 24992 192244 0 0 0 0 189 592 0 5 95 0 0 2012-09-02 14:57:22 IST - -#### 4. Statistics of Various Counter #### - -**vmstat** command and -s switch displays summary of various event counters and memory statistics. - - [tecmint@tecmint ~]$ vmstat -s - - 1030800 total memory - 524656 used memory - 277784 active memory - 185920 inactive memory - 506144 free memory - 26864 buffer memory - 310104 swap cache - 2064376 total swap - 0 used swap - 2064376 free swap - 4539 non-nice user cpu ticks - 0 nice user cpu ticks - 11569 system cpu ticks - 329608 idle cpu ticks - 5012 IO-wait cpu ticks - 79 IRQ cpu ticks - 74 softirq cpu ticks - 0 stolen cpu ticks - 336038 pages paged in - 67945 pages paged out - 0 pages swapped in - 0 pages swapped out - 258526 interrupts - 392439 CPU context switches - 1346574857 boot time - 2309 forks - -#### 5. Disks Statistics #### - -**vmstat** with **-d** option display all disks statistics. - - [tecmint@tecmint ~]$ vmstat -d - - disk- ------------reads------------ ------------writes----------- -----IO------ - total merged sectors ms total merged sectors ms cur sec - ram0 0 0 0 0 0 0 0 0 0 0 - ram1 0 0 0 0 0 0 0 0 0 0 - ram2 0 0 0 0 0 0 0 0 0 0 - ram3 0 0 0 0 0 0 0 0 0 0 - ram4 0 0 0 0 0 0 0 0 0 0 - ram5 0 0 0 0 0 0 0 0 0 0 - ram6 0 0 0 0 0 0 0 0 0 0 - ram7 0 0 0 0 0 0 0 0 0 0 - ram8 0 0 0 0 0 0 0 0 0 0 - ram9 0 0 0 0 0 0 0 0 0 0 - ram10 0 0 0 0 0 0 0 0 0 0 - ram11 0 0 0 0 0 0 0 0 0 0 - ram12 0 0 0 0 0 0 0 0 0 0 - ram13 0 0 0 0 0 0 0 0 0 0 - ram14 0 0 0 0 0 0 0 0 0 0 - ram15 0 0 0 0 0 0 0 0 0 0 - loop0 0 0 0 0 0 0 0 0 0 0 - loop1 0 0 0 0 0 0 0 0 0 0 - loop2 0 0 0 0 0 0 0 0 0 0 - loop3 0 0 0 0 0 0 0 0 0 0 - loop4 0 0 0 0 0 0 0 0 0 0 - loop5 0 0 0 0 0 0 0 0 0 0 - loop6 0 0 0 0 0 0 0 0 0 0 - loop7 0 0 0 0 0 0 0 0 0 0 - sr0 0 0 0 0 0 0 0 0 0 0 - sda 7712 5145 668732 409619 3282 28884 257402 644566 0 126 - dm-0 11578 0 659242 1113017 32163 0 257384 8460026 0 126 - dm-1 324 0 2592 3845 0 0 0 0 0 2 - -#### 6. Display Statistics in Megabytes #### - -The **vmstat** displays in **Megabytes** with parameters **-S** and **M**(Uppercase & megabytes). By default **vmstat** displays statistics in kilobytes. - - [root@tecmint ~]# vmstat -S M 1 5 - - procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu----- - r b swpd free buff cache si so bi bo in cs us sy id wa st - 0 0 0 346 53 476 0 0 95 8 42 55 0 2 96 2 0 - 0 0 0 346 53 476 0 0 0 0 12 15 0 0 100 0 0 - 0 0 0 346 53 476 0 0 0 0 32 62 0 0 100 0 0 - 0 0 0 346 53 476 0 0 0 0 15 13 0 0 100 0 0 - 0 0 0 346 53 476 0 0 0 0 34 61 0 1 99 0 0 - -### 6 Iostat Command Examples in Linux ### - -#### 7. Display CPU and I/O statistics #### - -**iostat** without arguments displays **CPU** and **I/O** statistics of all partitions as shown below. - - [root@tecmint ~]# iostat - - Linux 2.6.32-279.el6.i686 (tecmint.com) 09/03/2012 _i686_ (1 CPU) - - avg-cpu: %user %nice %system %iowait %steal %idle - 0.12 0.01 1.54 2.08 0.00 96.24 - - Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn - sda 3.59 161.02 13.48 1086002 90882 - dm-0 5.76 159.71 13.47 1077154 90864 - dm-1 0.05 0.38 0.00 2576 0 - -#### 8. Shows only CPU Statistics #### - -**iostat** with **-c** arguments displays only **CPU** statistics as shown below. - - [root@tecmint ~]# iostat -c - - Linux 2.6.32-279.el6.i686 (tecmint.com) 09/03/2012 _i686_ (1 CPU) - - avg-cpu: %user %nice %system %iowait %steal %idle - 0.12 0.01 1.47 1.98 0.00 96.42 - -#### 9. Shows only Disks I/O Statistics #### - -**iostat** with **-d** arguments displays only disks **I/O** statistics of all partitions as shown. - - [root@tecmint ~]# iostat -d - - Linux 2.6.32-279.el6.i686 (tecmint.com) 09/03/2012 _i686_ (1 CPU) - - Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn - sda 3.35 149.81 12.66 1086002 91746 - dm-0 5.37 148.59 12.65 1077154 91728 - dm-1 0.04 0.36 0.00 2576 0 - -#### 10. Shows I/O statistics only of a single device. #### - -By default it displays statistics of all partitions, with **-p** and device name arguments displays only disks **I/O** statistics for specific device only as shown. - - [root@tecmint ~]# iostat -p sda - - Linux 2.6.32-279.el6.i686 (tecmint.com) 09/03/2012 _i686_ (1 CPU) - - avg-cpu: %user %nice %system %iowait %steal %idle - 0.11 0.01 1.44 1.92 0.00 96.52 - - Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn - sda 3.32 148.52 12.55 1086002 91770 - sda1 0.07 0.56 0.00 4120 18 - sda2 3.22 147.79 12.55 1080650 91752 - -#### 11. Display LVM Statistics #### - -With **-N** (Uppercase) parameter displays only **LVM** statistics as shown. - - [root@tecmint ~]# iostat -N - - Linux 2.6.32-279.el6.i686 (tecmint.com) 09/03/2012 _i686_ (1 CPU) - - avg-cpu: %user %nice %system %iowait %steal %idle - 0.11 0.01 1.39 1.85 0.00 96.64 - - Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn - sda 3.20 142.84 12.16 1086002 92466 - vg_tecmint-lv_root 5.13 141.68 12.16 1077154 92448 - vg_tecmint-lv_swap 0.04 0.34 0.00 2576 0 - -#### 12. iostat version. #### - -With **-V** (Uppercase) parameter displays version of **iostat** as shown. - - [root@tecmint ~]# iostat -V - - sysstat version 9.0.4 - (C) Sebastien Godard (sysstat orange.fr) - -**Note**: **vmstat** and **iostat** contains number of columns and flags which may not possible to explain in details. If you want to know more about it you may refer man page of **vmstat** and **iostat**. Please share it if you find this article is useful through our comment box below. - --------------------------------------------------------------------------------- - -via: http://www.tecmint.com/linux-performance-monitoring-with-vmstat-and-iostat-commands/ - -作者：[Ravi Saive][a] -译者：[译者ID](https://github.com/译者ID) -校对：[校对者ID](https://github.com/校对者ID) - -本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出 - -[a]:http://www.tecmint.com/author/admin/ -[1]:http://sebastien.godard.pagesperso-orange.fr/download.html