solaris iostat

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

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

database administrator should know what BSTAT/ESTATS are and how to run and understand them. In other words, from the application perspective, BSTATS/ESTATS can display bottlenecks that limit Oralce performance, which can be used as a guide for further analysis. Where is most of the time spent? Is it a kernel or a user process? You can answer this question through vmstat, mpstat, sar, ps, and prstat. Are all resources of similar types equally busy? The significance of this problem is to find th

ordinary name server In. uucpd, uucpd-uucp Server Inetd-Internet service daemon Infocmp-compare or print the terminfo description Init and telinit-initialization of Process Control Init. WBEM-start and stop the CIM Boot manager Install-installation command Installation script for install_scripts-Solaris Software Installboot-install the boot block in the disk partition Installf-add files to the software installation database Intro and intro-Introducti

5. System Maintenance5.1 Solaris SystemInvolved server account1 (218.29.0.239), Account2 (218.29.0.240), oradb1 (218.29.0.244), oradb2 (218.29.0.245)5.1.1 System Overview1. Basic information of the Operating System: uname-A displays the name, hostname, major version information, minor version information, hardware type, CPU type, and platform information of the operating system in sequence.2. kernel information: Modify the/etc/system file to change th

I spent most of my time teaching courses on Solaris internal implementation, device drivers, and kernel crash dump analysis and debugging. When explaining to students how to implement various subsystems in Solaris, they often ask "How is it implemented in Linux ?" Or "this is implemented in FreeBSD, but in Solaris ?". This article discusses the three basic subsys

F3jlinux Alliance 5. How to adjust the resolution and refresh frequency of X-window? F3jlinux Alliance Log on to the character interface and run: #/kdmconfig f3jlinux Alliance F3jlinux Alliance 6. How to Use optical and soft drive? F3jlinux Alliance Generally used: f3jlinux Alliance #/Etc/init. d/volmgt start f3jlinux Alliance # Volcheck f3jlinux Alliance The above method does not work. Use: f3jlinux Alliance #/Etc/init. d/volmgt stop f3jlinux Alliance # Mount-F hsfs-O ro/dev/DSK/c0t6d0s0/CDROM

Solaris is open source, both for sun and for the open source community, which is a blockbuster. For Sun, this is an open source for one of its three pillars, and the future development of Solaris is a concern. Similarly, people interested in Open-source software believe that open source Solaris may pose a threat to Linux. For a while, the debate about

1. I personally think that the author's understanding of Linux by MAX is not as deep as that of Solaris, I do not know whether or not he has the following content about Linux from his own code reading and analysis, or only from third-party documents without on-site verification; 2. I have tried my best to translate it as intended. Of course, I can't help but insert two sentences in the middle. 3. Whether I only read this article or read other things,

ZFS file system is an important feature of Solaris 10. instance configuration allows you to learn more about ZFS file system configurations.1. Solaris disk Basics1. How to view Disks# FormatAvailable disk selections:0. c0d1 /Pci @ 0, 0/pci-ide @ 7, 1/ide @ 1/cm1. c1t0d0 /Pci @ 1976/pci15ad, @ 10/sd @2. c1t1d0 /Pci @ 1976/pci15ad, @ 10/sd @3. c1t2d0 /Pci @ 1976/pci15ad, @ 10/sd @4. c1t3d0 /Pci @ 1976/pci15ad

Linux guide for migration from Solaris to x86 From: ibmdeveloperworks Solaris is considered to be the most similar UNIX style to Linux, but for program migration, they are still quite distinct in areas such as memory ing, threads, and support for natural languages. This porting Guide provides some suggestions when you plan to port your program to Linux/x86 and helps you understand the differences between t

1. view the hard disks and optical drives mounted on the system, which are generally C * T * D * and those without S *.Iostat-en -Bash-3.00 $ iostat-enC0d0 soft errors: 0 hard errors: 0 transport errors: 0Model: WDC wd5000aaks-Revision: Serial No: WD-WCAWFC0 size: 500.10 GB Media error: 0 device not ready: 0 no device: 0 recoverable: 0Illegal Request: 0C1t0d0 soft errors: 2 hard errors: 0 transport errors:

ZFS file systems are an important feature of Solaris 10, and instance configurations can be more capacity-aware of ZFS file system configurations. One, Solaris Disk basics 1. Disk View method # formatAVAILABLE DISK Selections:0. c0d1 /pci@0,0/pci-ide@7,1/ide@1/cmdk@1,01. c1t0d0 /pci@0,0/pci15ad,1976@10/sd@0,02. c1t1d0 /pci@0,0/pci15ad,1976@10/sd@1,03. c1t2d0 /pci@0,0/pci15ad,1976@10/sd@2,04. c1t3d0 /pci@

Written using Python + shell, is a simple Solaris system patrol Program Copy the Code code as follows: #!/usr/bin/python-u #-*-Coding:utf-8-*- ''' Program: solaris_status.py author:gyh9711 Function: System State Information Acquisition Language:SH + python Attention:The partial invoke command requires root access Test situation:System version: SOLARIS10 system test OKTest server Model: Sun 6900 6800 v445 v440 M3000 M5000Content:'''Import timeImport