isilon performance monitoring

Guidelines to help you understand some of the basics of monitoring and measuring performance issues in the WebSphere Portal environment To optimize the WebSphere Portal environment for optimal performance, you need to know what needs to be optimized. The monitoring methods discussed in this article cover several impor

Linux provides a very good file Virtual System (/proc) to monitor system performance. The/proc file virtual system is a mechanism used by the kernel and kernel module to send information to processes. It exists in the memory instead of the hard disk. The main functions of the/proc file virtual system include process information, system information, CPU information, load information, and system memory information. 1.

value is less than 5m, SQL Server may have a performance bottleneck due to lack of memory. 4.Physical Disk:% Disk Time This counter records how busy the disk is (the entire disk array or the physical disk is busy). Theoretically this value should be less than 55%, if it lasts more than 55%, that indicates that there may be an IO bottleneck on this server. If only occasionally appear several times, that does not need to worry, but can correspond to fi

8649239.2. 11.71 }Modified to:/**/239.2. 11.71 8649239.2. 11.71 }2. Configure gmetad.confVim/etc/ganglia/gmetad.confData_source "My cluster" localhostModified to:Data_source "My Cluster" 192.168.10.128:86493. Restart Service required:/etc/init.d/ganglia-Monitor Restart/etc/init.d/Gmetad restart/etc/init.d/apache2 restartIf you encounter a situation where apache2 cannot be restartedVim/etc/apache2/apache2.confFinally add a sentence ServerName localhost:80 can.4. Now you can access Gnglia webin

I was inspired by a post today and found that you can use the Windows Performance Monitor to monitor basically all of the system resources, the following is the tutorial:Performance Monitor location in Control Panel-Administrative ToolsWhen opened, the default is a CPU-occupied monitoring, below to add hard disk idle time to do the example1: Monitor graph above right-click Add counter2: Then find the Physic

Tags: sum statement oracle nbsp SQL statement monitor best dia user--oracle Common Performance Monitoring SQL statements--1SELECT * from SYS. V_$sqlarea WHERE disk_reads > 100; --2 waiting for the monitoring caseSELECT EVENT,SUM (DECODE (wait_time, 0, 0, 1)) "Prev",SUM (DECODE (wait_time, 0, 1, 0)) "Curr",COUNT (*) "Tot"From v$session_waitGROUP by EVENTORDER by 4

When the system's physical memory is insufficient, a portion of the physical memory needs to be released for use by the currently running program. The allocation of Swap space is important, but the performance monitoring during system operation is more valuable. Through performance monitoring tools, you can check the

hard disk and the memory.Memory pagesPrevious Linux performance monitoring: memory mentions that the IO between the RAM and the hard disk is in pages, and the size of the 1 page on the Linux system is 4K. You can view the default page size of the system with the following command:$/usr/bin/time-v Date ... Page size (bytes): 4096 ...Missing pages InterruptLinux uses virtual memory to greatly expand the prog

detect which function occupies a large amount of CPU time, thus effectively changing the program. Iii. Exercise 2) implement a simple sieve methodOf Eratosthenes) to calculate all prime numbers less than N. The main data structure of this Program is an N-Bit Array, and the initial values are true. Every time a prime number is found, the multiples of all the prime numbers in the array are set to false. The next prime number is the next real bit in the array. Answer: The following C program impl

Introduction to the previous chapterWebServerApacheThe architecture and principlesApacheInstallation (LinuxAs follows: Http://www.cnblogs.com/fnng/archive/2012/08/30/2662984.html So this section will share someApachePerformance monitoring. Monitor performance through server-status in Linux To monitor Apache performance, we need to modify the confi

1. OverviewMonitoring, is an integral part of checking system problems or optimizing system performance. Monitoring the usage of operating system resources through the operating system monitoring tool, which indirectly reflects the operation of each server program. Based on the analysis of running results, we can quickly locate the system problem range or

Sysstat The sysstat package contains utilities to monitor system performance and usage activity. sysstat contains varous utilities, common to collect commercial unixes, and tools you can schedule via cron to collect and historize performance and activity data. Http://sebastien.godard.pagesperso-orange.fr/features.html Download and install from the above site Including iostat (1) mpstat (1) pidstat (1)

Performance monitoring: The introduction of performance monitoring before the need to know the bottom line, then monitor the CPU performance of the bottom line is what? Usually we expect our system to reach the following goals: CPU utilization, if the CPU has 100%

Shortcomings of TPVWe all know that.IBM's WebSphere Application Server (WAS) has its own TPV (Tivoli performance Viewer) after V5Used to monitor the health of wasIncludes resources such as JVM memory usage, database connection pool, Web container thread pool, applications, user sessions, transactions, caches, and moreBut the main shortcomings of TPV are:(1) TPV itself is a graphical toolIf you want to use remoteWe can only use extra!. X and other grap

Monitoring methodsRecommended Use Windows The "Performance Monitor" that comes with the old version of the Windows called performance counters) to monitor the performance of the server. Open the Management tool in Control Panel, open Performance Monitor in the management too

This article describes how to track, monitor, and optimize CRM. Tracking is a very useful function in CRM. It can provide valuable information for our CRM to debug or solve errors and warnings; we can use the performance monitoring tool of window to understand the performance of CRM. Finally, we can adjust the performance