iostat tablets

Iostat command to monitor system input/output device load You can perform the following command at installation Yum Install Sysstat Can [Root@zhaopin zhaopin]# Iostat Linux 2.6.18-164.el5 AVG-CPU:%user%nice%system%iowait%steal%idle 0.45 0.00 0.26 0.09 0.24 98.96 Device:tps blk_read/s blk_wrtn/s Blk_read Blk_wrtn Xvda 6.10 7.50 80.91 150199774 1620302742 XVDA1 0.00 0.00 0.00 2732 182 Xvda2 6.10 7.

After a long period of monitoring, found Iostat in the%util high, has been in 98% up and down, indicating that the bandwidth occupancy rate is highly, encountered a bottleneck.and read and write speed is very slow, after troubleshooting, found that the HBA card problems, after replacement, with the DD if command test, the disk read and write speed has been more than 10 times times the promotion.But after replacing the HBA card, although read and write

Analysis of iostat results [Root @ 20081006-1724 ~] # Iostat-X-dLinux 2.6.9-78. elsmp (20081006-1724) 11/20/2009 AVG-CPU: % USER % nice % sys % iowait % idle 0.19 0.00 0.04 0.03 99.73 device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s RKb/s WKB/s avgrq-SZ avgqu-SZ await svctm % util SDA 0.05 17.60 1.46 7.72 80.69 202.57 40.34 101.29 30.87 0.01 1.06 0.37 0.34 Sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 29.90 0.00

Install sysstat using iostat and sar. The main Commands provided by the linux sysstat toolkit are as follows: the last two parameters of iostat mpstat sarsar are generally the statistical information of the CPU usage output by interval count1 and sar-u 1 5, which is output once per second, total output 100 times 17: 06 minutes 01 seconds CPU % user % nice % system % iowait % idle 17:06:02 all 1.27 0.00 0.51

IOSTAT NAME:Iostat reports CPU statistics and I/O statistics. Syntax:Iostat [-c] [-d] [-N] [-n] [-h] [-k |-m] [-t] [-V] [-x] [-y] [-z] [-j {ID | LABEL | PATH | UUID | ...} [device [...] | ALL] [device [...] | ALL] [-p [device [,...] | ALL] [interval [count] Option:-C only displays the CPU usage report-d only displays the device usage report-N displays the registered device mapped name. -N display Network File System (NFS) Report-h makes it easy for NF

################ Operation################ Iostat-x 1 10Linux 2.6.18-92. el5xen 02/03/2009Avg-cpu: % user % nice % system % iowait % steal % idle1.10 0.00 4.82 39.54 0.07 54.46Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm % utilSda 0.00 3.50 0.40 2.50 5.60 48.00 18.48 0.00 0.97 0.97 0.28Sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00Sdc 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00Sdd 0.00 0.00 0.00 0.00

, KB_WRTN: Total amount of data written ; These units are kilobytes.The initial value is large because the cumulative read and write volume is displayed.2,iostat-x parameters, viewing device usage (%util), Response time (await)650) this.width=650; "height=" 332 "src=" http://b378.photo.store.qq.com/psb?/V11JpMrT3dJHqc/ qudmzgyomo8fwxdo8hqlwmmmkmcffo89mkuvvbm4fnc!/b/dhyexefvbwaaek=1kp=1pt=0bo=ugtoaqaaaaafafi! t=5su=0112173041tm=1484053200sce=0-12-12rf=

device (BI) and written out (Bo). This usually reflects disk I/O.SystemThese columns show the number of seconds of interruption (in) and context switching (CS).CpuThese columns show the percentage of all CPU time spent on various operations, including executing user code (not kernel), executing system code (kernel), idle, and waiting for I/O. If you are using virtualization, the fifth column may be St, showing the percentage of "stolen" from the virtual machine. This relates to the time that th

[Root @ 20081006-1724 ~] # Iostat-xLinux 2.6.9-78. elsmp (20081006-1724) 11/20/2009 AVG-CPU: % USER % nice % sys % iowait % idle0.19 0.00 0.04 0.03 99.73 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s RKb/s WKB/s avgrq-SZ avgqu-SZ await svctm % utilSDA 0.05 17.60 1.46 7.72 80.69 202.57 40.34 101.29 30.87 0.01 1.06 0.37 0.34Sda1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 29.90 0.00 3.14 3.14 0.00Sda2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16.25 0.00 1.51 1.

displaying CPU and I/O statisticsIostat statistics for all partitions showing CPU and I/O without parameters-C Display The CPU Utilization report.-D Display The device utilization reportLinux4.10.0- +-generic (Ubuntu) ,/ to/ ._x86_64_ (2CPU) Avg-CPU:%user% Nice%system%iowait%steal%Idle0.50 0.04 0.38 0.44 0.00 98.64Device:tps Kb_read/s kb_wrtn/s Kb_read kb_wrtnsda1.07 11.15 23.80 1007641 2150292AVG-CPU segment:%user: The percentage of CPU that is used to run at t

In the photo studio, the late designers face a large number of repair tasks all day long, fast, efficient, practical PS repair diagram method for them is very important. This issue will continue to introduce you to seven kinds of methods, is the

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1. superbutton: on the "Start" screen, move your finger gently to the right of the screen to bring up the "super button ",File Search, sharing, device management, and common settings can be performed here. 2. All applications: on the "Start" screen,

Let's start with a complete wafer (Wafer: Is Intel's 25nm NAND wafer.Terminology: wafer is the wafer shown in the image, which is composed of pure silicon (SI. It is generally divided into 6 inch, 8 inch, and 12 inch specifications. The wafer is

Tablet computers and super systems use the best systems. Different fans have been arguing over the topic. Some people say that Linux is used, while others talk about Mac and Android. Microsoft also launched the so-called Win8. However, Win8 is not a

1. No Bluetooth device found: To use the Bluetooth function, you must turn on the Bluetooth switch correctly.1. Bluetooth disabled: To use the Bluetooth transmission function, you must enable the Bluetooth function on your tablet.1. On the standby

IPad ProReference Price: Starting from 5000 RMBRecommended reason: optional keyboard and pen, dual-band Wifi, fingerprint recognition, high performanceIPad Pro is a new generation of big screen tablet computer that was released at the launch of

1. After you connect your phone to your tablet, click application if the tablet is on the standby page ]. 2. If the app icon for file transfer is blocked by the mobile phone, click and hold the blank area on the top of the mobile phone. 3. Drag your

MariaBonnefon, channel and market expansion manager of Ubuntu developer Canonical, said that the new Ubuntu11.10 system has provided the partner with the Ubuntucore Development Kit to help customers develop their own products on different hardware

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