Introduction to Linux monitoring tools a brief introduction to top tools for viewing process activity status and some system conditions such as vmstat for viewing system status, hardware and system information iostat for viewing CPU load and hard disk status sar integrated tools, view system status mpstat view multi-pr
I/O wait for Linux system monitoring and diagnosis tools
Directory
1. Problem:2. troubleshooting:2.1 vmstat2.2 iostat2.3 iotop3. The last words: a different path1. Problem:
Recently, log real-time synchronization was performed. Before the release, the online log stress test was performed. The message queue and the client and the local machine are normal, but I did not expect that after the second log is upl
interrupt related rate data-L: Displays statistics related to load average (average load)-M: Show memory-related statistics-N: Shows the rate of data sent to and from the network-P: Show process-related statisticsRate of-R:I/O requests-S: Show data about swap-Y: Displays system-related data, including interrupts and process transitions2. Other options--TOP-CPU: Show CPU-intensive processes--top-bio: Displays the process of the most consumed block device block IO--top-io: Show processes that occ
1. Introduction:Javamelody can monitor Java or Java EE application servers in a running environment. It is displayed as a graph: Java memory and Java CPU usage, number of user sessions, JDBC connections, and HTTP requests, SQL requests, JSP pages and Business interface methods (EJB3, Spring, Guice), average execution time, Error percentage, and so on. Charts can be viewed by day, week, month, year, or custom time period.2. Prepare:Download Javamelody-1.47.0.jar and Jrobin-1.5.9.1.jar, referenced
When your system is running slowly, have you noticed that your CPU, memory, and other hardware information has encountered an exception. How can we find out the cause that actually slows down your machine? We recommend five system monitoring tools under Ubuntu to keep your system vigilant."Top" command
Needless to say, this is the most typical command in Linux. The console interface provides comprehensive
The following are some excellent monitoring products. It is best for system providers to recommend the best monitoring solution that meets their needs and maintains compatibility with infrastructure.
Most vendors provide the following system monitoring tools for selection.
Up. Time
Http://www.uptimesoftware.com/
Ca
Tools for batch monitoring MySQL db layers in Linux are relatively scarce, and SSIS is used for DIY.
Use the SSIS package to read the configuration table information to monitor MySQL and send feedback to DBA by email according to the actual situation.
1. sort out a global information table, including ip addresses and monitoring dimensions.
The table creation sta
V
Ndrt
The number of pages that were modified the last time it was written to.
W
S
Process state.D= non-interruptible sleep stateR= runS= SleepT= trace/StopZ= Zombie Process
X
COMMAND
Command name/command line
Y
Wchan
If the process is sleeping, the system function name in sleep is displayed
Z
Flags
Task Flag, reference sched.h
By default, only the more important PID,
Ext.: http://www.vpsee.com/2014/09/linux-performance-tools/There are a lot of performance tools on the Linux platform, a dazzling, long-term groping and experience finding the best thing to use is the proven, simple gadgets. Brendan D. Gregg, a system performance expert, updated his famous talk (Linux performance Tools) and slides on Linux in the recent LinuxCon
As you know, the JDK itself provides many virtual machine monitoring tools to monitor virtual machine service information, such as Jps,jmap,jstack. Under win7 , sometimes executing these commands will report an " Access denied " error, such as:This problem usually occurs with commands that involve process PID. Workaround: When the cmd Command box is turned on, right-click Run as Administrator , such as:The
Command loggingMore. Bash_history2. If the business cannot be stopped. The first is to find the user. Lock the user.3. Analysis of the causes and ways of intrusion4. Back up user data (note that. See if there's a hidden attack source first)5. Reinstall the System6. Hotfix or vulnerability7. Recover data and connect to the network.This article is from the "Shong Linux Tour" blog, make sure to keep this source http://12042068.blog.51cto.com/12032068/1897576The necessary work after the Linux intru
common tools for Linux system monitoring I. System core Toolkit (COREUTILS)1./BIN/DF report The disk space usage of the system df-h display the disk partition fdisk-l2./bin/uname Display System Information UNAME-SRVMOTwo. System Process Toolkit (PROCPS)1./bin/ps Display system process ps-ef PS aux2./USR/BIN/PGREP Filtering Display System process3./usr/bin/free display of system memory usage4./usr/bin/vmstat
Glances is a Linux, BSD open Source command-line system monitoring tool, which uses the Python language development, uses the Psutil library to collect the system data, can monitor the CPU, the load, the memory, the disk I/O, the network traffic, the file system, the system temperature and so on information. Compared to top/vmstat/iostat and other old monitoring tools
There are a lot of performance tools on the Linux platform, a dazzling, long-term groping and experience finding the best thing to use is the proven, simple gadgets. Brendan D. Gregg, a system performance expert, updated his famous talk (Linux performance Tools) and slides on Linux in the recent LinuxCon NA 2014 conference.Compared with Brendan last year's talk, this year added testing and optimization to t
Article Title: Main Oracle monitoring tools in Linux. Linux is a technology channel of the IT lab in China. Including desktop applications, Linux system management, kernel research, embedded systems, open source, and other basic categories 1.top
The top command displays the process, CPU, memory, load, and other information of the Linux system in real time. It is the best tool for us to understand the over
JDK itself comes with a lot of practical tools. The following are commonly used:1. JPs: displays all Virtual Machine Processes-Q: only ID numbers are listed.-M: ID, primary class, and parameters passed to the primary class-L: ID and full name of the main class-V: ID, primary class, and complete VM startup parameters
2. jstat: Virtual Machine statistics monitoring Reference: http://blog.163.com/yangshuo_qq
connection interrupt request, or confirmation of a previous connection interrupt requestFin-wait-2: Waiting for connection interrupt request from remote TCP www.2cto.comClose-wait: Waiting for a connection interrupt request from a local userCLOSING: Waiting for remote TCP to confirm connection interruptionLast-ack: Waiting for acknowledgement of the original connection interrupt request to the remote TCPTime-wait: Wait enough time to ensure that the remote TCP receives a connection interrupt re
Professional database and oacle EBS monitoring tools
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Databases and applicationsProgramOptimization can greatly improve the system performance.In some cases, performance optimization can improve the performance by 80% or higher.In the field of database and Oracle 11i program optimization, We have rich experience and applied it to our B .g. s product.
B .g. S is also rel
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