The last article on how to use LoadRunner monitor Linux performance indicators, but the CPU on a few indicators are not clear, the following detailed said.
CPU Utilization good understanding, that is, CPU utilization, more than 7
1, anti-virus software caused the failure
Because of the new version of KV, Jinshan, rising are added to the Web page, plug-ins, mail random monitoring, undoubtedly increased the system burden. Treatment: Basically there is no reasonable treatment, try to use the least monitoring services, or, upgrade your hardware equipment.
2, the driver has not been certified, resulting in 100% CPU resource consumption
A large number of beta drivers are flooding
method is to wait for the previous time:
1. Record cpu usage at a specific time point
2. Wait for the previous time period
3. Record the current cpu usage
4. Calculate the total time slice
Sum all cpu usage for the first time and obtain j1
Sum up all cpu usage for the second time and obtain j2
J2-j1 gets all time slic
slices for this time periodThat is, total = j2-j1 = sum of all columns for the second time-sum of all columns for the first time5. Calculate the idle timeIdle corresponds to the data in the Fifth Column. Use the second value minus the first value.Idle = fifth column of the second operation-fifth column of the first operation6. Calculate CPU usageRate = (total-idle)/Total
See http://oss.lzu.edu.cn/blog/article.php? Tid_1379.htmlWhen we conduct p
, CPU status, memory usage, swap occupancy . Input: TopOutput: From the CPU state that line, you can clearly grasp the CPU utilization: User mode (US), System mode (SY), Low priority user mode (NI), idle task (ID), I/O Waiting (WA). The top command can also detail how much CPU
In the analysis of the system, one of the first and most basic tools is often a simple measurement of the CPU utilization of the system. Linux and most unix-based operating systems provide a command to display the system's average load (loadaverage).
[huangc@v-02-01-00860 ~]$ uptime 11:18:05 up for days
, 1:17, one users, load average:0.20, 0.13, 0.12
Specifically, the average load value represents the
paging operation, this paging operation is very expensive host CPU resources. If the process is found to be in a non-sleep state through top, and it runs for a long time, you can initially determine that the system is continuously paging, and you can turn the problem to an out-of-memory reason for troubleshooting.
Problem Description:The kswapd0 process consumes a large amount of CPU resources on
1, phenomenonWrite a storm application that synchronizes the table to hbase primarily via MySQL's binlog. After running for a period of time found that the CPU usage often soared to more than 200%, and then a variety of message accumulation alarm and so on, there are various problems2, research processCPU usage is high, so first find the process, through the top command, monitor the
The steps are as follows:
1, first to understand where to view the CPU usage, we right-click the bottom of the Desktop toolbar, and then choose to start Task Manager.
2. Select the performance option in the pop-up Windows Task Manager tab, where you can view the CPU usage of your computer.
3, then we see the computer's CPU usage is h
information about the service.The above approach helped me a lot more than once in the process of writing and debugging services. The Resource Monitor will be your good helper. However, many people do not know that there is this thing exists ... You have to try it!===================================== Gorgeous split-line ===================================The following are the translators ' supplements:The above method is only applicable to Vista an
How to reduce the computer CPU utilization rate
Reduce the frequency of computer CPU utilization, you can open the computer Task Manager, and then shut down the relevant programs.
Click to enter the Task Manager function page, and then look at the use of computer resources and related program occupancy, a
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SNMP: Simple Network Management Protocol (SNMP) is the basic method for collecting bandwidth and network utilization data. SNMP can be used to monitor the bandwidth utilization of vrouters and vswitch ports, as well as CPU load
The main contents of this section:Use shell scripts to monitor the load, CPU, memory, hard disk, and user logins of Linux systems.One, Linux system alarm mail script# vim/scripts/sys-warning.sh#!/bin/bash#site:www.jquerycn.cn# Monitoring System load and CPU, memory, hard disk, log on the number of users, beyond the alert to send an email alarm. #提取本服务器的IP地址信息IP=
immediately handle!!! " | Mail-s "$IP Server system load critical alarm!! "$MAilElse#当前系统15分钟平均负载值与告警值进行比较 (1 is returned when the alarm value is greater than 0.70, and 0 is returned if it is less than)# load_now= ' expr $average _load \> $load _warn 'load_now= ' echo ' $average _load> $load _warn "|BC"#如果系统单个核心15分钟的平均负载值大于告警值0.70 (return value is 1), send an email to the Administratorif [$load _now-eq 0];thenecho "$IP server 15 minutes of system average load reached $average _load, exceeding t
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