prtg monitoring tool

Real-time monitoring commands, watch is a very useful command, can help you to monitor the results of a command in real time, save the manual run over and over again. The two most common options for this command are-D and-N, where-n indicates how many seconds interval is executed "command", and-D indicates where the highlight has changed.Examples of usage:1) Execute the WHO command once every second to monitor the status of the server's current user l

Javamelody, a good tool for monitoring applications, has been introduced before, and has complete functions.Slightly smaller, specifically designed for Tomcat. The following describes the usage: 1 download:Http://www.lambdaprobe.org/downloads/1.7/probe.1.7b.zip2. After decompression, put probe. War under Tomcat's webapps and set server. xmlContext3. Set the user as follows in tomcat_user.xml.VI/usr/local/

The Linux system administrator should know the monitoring tool. If you want to monitor the performance of the Linux server, try the built-in shell commands and some additional tools. Many Linux distributions have "tons" of monitoring tools. These tools provide measurable information for observing system activities and identifying suspicious points that result in

Linux real-time monitoring tool vmstat The official definition of vmstat is vmstat-Report virtual memory statistics, which is the statistics of virtual memory. First, tracing: What is virtual memory? A: The virtual memory is a virtual file on the disk that can be used as the memory. Why is there virtual memory? A: The program needs to run through the memory. If the program consumes too much memory during ex

: VnstatInstallation: Apt-get-y Install VnstatUse: VnstatTool 16Name: Bwm-ngInstallation: Apt-get-y Install Bwm-ngUse: Bwm-ngTool 17Name: CBMInstallation: Apt-get-y Install CBMUse: CBMTool 18Name: PkstatInstallation: Apt-get-y Install PkstatUse: Pkstat-i eth0-ntTool 19Name: NetwatchInstallation: Apt-get-y Install NetdiagUse: Netwatch-e eth1-ntTool 20Name: SARInstallation: Apt-get-y Install SARUse: Sar-n DEV 1 4There are a lot of tools to view network traffic, most of them are similar, choose one

Android memory monitoring tool ddms --> heap. Original address To monitor the memory usage of an application process using heap, follow these steps:1. After eclipse is started, switch to the ddms perspective and confirm that the devices view and heap view are all open;2. Connect your phone to your computer via USB. Make sure that the phone is in "USB debugging" mode instead of "Mass Storage ";3. After the c

about 10.5, and every 3 seconds disk reads about 62KB, writes about: 110KB, this value is not an accurate value, why? Know why? Because of the time period problemThe best test is to find the average number of times or use the method to find the current valueAs shown below:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/6B/86/wKiom1Uvfk2jn_KzAAC-70HOJzU414.jpg "title=" 6.png " alt= "Wkiom1uvfk2jn_kzaac-70hojzu414.jpg"/>There are many more detailed extensions for Iostat, with the-X opt

The mysql Real-time Monitoring Tool mytop is similar to the linux top tool. It can monitor the performance information of mysql servers in real time. Installation Method1. install dependency # cpan> install DBI # cpan> install Term: ReadKey # cpan> install DBD: mysql # cpan> exit2. Download and install mytop cd/tmpwget http://jeremy.zawodny.com/mysql/mytop/mytop-

No matter how careful you are, it is impossible to completely avoid bad code. At this time, some tools are required to help us check whether there is any place in the code that will cause memory leakage. The ddms in Android tools comes with a very good memory monitoring tool heap (here I use the ADT plug-in of eclipse, and take the real machine as an example, the situation in the simulator is similar ). To

Erlang has provided a series of tools to view the running status. Is there any Web monitoring tool available? The following describes a great tool: BigwigIt provides SASL log view, OTP process tree topology, process view (sorted by metric), Application Management, node performance sampling, process control, and other functions; this project is built on a successf

Python for beginners-a linux User Logon monitoring tool, python-linux In the past few days, I want to learn Python. After reading some basic information, I felt a little boring, so I wanted to do something. If you think about it, just get a tool to detect Linux User logon ~ First, clarify the functions: 1. Capture login information of linux users. (This is easy

Download the Nmon for the system versionHttp://nmon.sourceforge.net/pmwiki.php?n=Site.Download Wiki-nmonHttps://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/Power%20Systems/page/nmon Decompression Run Gzip nmon**.tar.gz CD nmon** ./nmon* View running Status Online command and parameter description Nmon-s 10-c 60-f-m/root/ -S 10: Collect data every 10 seconds -C 60: Acquisition of 60 times, that is, 10 minutes of data acquisition

Many companies are upgrading their wireless networks to 802.11n to achieve greater throughput, wider coverage, and greater reliability, while ensuring the performance of wireless LANs (WLANs) is particularly important to ensure adequate network capacity and coverage. Below, we'll explore how to measure network performance through IPERF, a tool that is easy to use to measure tcp/udp throughput, loss, and latency. Pre-application Preparation Iperf is

1. Login Configuration Interface2. Show ProcesslistView the processes currently in use3. Warnings suggest which parameters you should optimize.4, introduce the configuration of the slow query, the other can be configured on their own, are simple English.The tool is good to use. The rest can be installed on their own to try.Official website: http://www.webyog.com/product/monyog#download-form-container (free 30-day trial for a fee)Cracked version downlo

("/var/run/monitor.pid"):FD = open ("/var/run/monitor.pid")PID = Fd.read ()Fd.close ()If Pid.strip () = = "":Createdaemon ()ElsePrint "Process not closed"ElseCreatedaemon ()Def stoppro ():FD = open ("/var/run/monitor.pid")PID = Fd.read ()Fd.close ()Os.kill (int (Pid.strip ()), signal. SIGKILL)FD = open ("/var/run/monitor.pid", "W")Fd.write ("")Fd.close ()def main ():Opt,agrs = Getopt.getopt (sys.argv[1:], "s:h")Opsign = ""For Op,value in OPT:If op = = "-H":Help ()Os._exit (0)Elif op = = "-S":Op

using Memcache in PHP1. Test codeThis is memcache official test memcache code2. Under Windows detection Memcache: http://download.csdn.net/detail/wujiangwei567/8571637Tool description Detailed Address: http://www.cnblogs.com/xffy1028/archive/2013/02/01/2861706.htmlThe use of memcache in PHP and the Memcache monitoring tool in Windows

. Number of Lookup requests 20 IP (commonly used to find the source of attack) Netstat-anlp|grep 80|grep Tcp|awk ' {print $} ' |awk-f: ' {print '} ' |sort|uniq-c|sort-nr|head-n203. Use tcpdump to sniff 80 ports with the highest number of IPTcpdump-i ETH0-TNN DST Port 80-c 1000 | Awk-f "." ' {print $1″. ' $2″. " $3″. " $4} ' | Sort | uniq-c | Sort-nr |head-104. Find more time_wait connectionsNetstat-n|grep Time_wait|awk ' {print $} ' |sort|uniq-c|sort-rn|head-n105. Check for more SYN connections

lightweight processes in the running queueUS: User-State CPU utilizationSY: System State CPU usageID:CPU Idle Rate2. Toptop-09:42:04 up 3 days, 3 min, 1 user, load average:0.00, 0.01, 0.05tasks:108 Total, 3 running, sleeping, 0 Stopped, 0 zombie%cpu (s): 0.0 us, 0.0 sy, 0.0 ni,100.0 ID, 0.0 wa, 0.0 hi, 0.0 si, 0.0 stkib mem:1015472 Total , 104568 free, 84224 used, 826680 Buff/cachekib swap:0 Total, 0 free, 0 used.

main cache mode: Buffer Cache and Page cache. The former is for the disk block read and write, the latter for the file inode read and write. These caches can effectively shorten the time for I/O system calls (such as read,write,getdents). Remember that the memory is for use, not to take a look. Unlike windows, no matter how much of your real physical memory, he will have to take the hard disk swap files to read. This is why Windows often prompts for a lack of virtual space. You think, how borin

displayed, and each item can be consulted. Need to observe the value of the ID (idle), generally speaking, he should be close to 100%, indicating that the system is rarely used resourcesLines Fourth and fifth: represents the current use of physical memory and virtual memory (MEM/SWAP).after line sixth: This is where the state is displayed when the command is entered in the top program. The picture below the top is the resource situation used by each process.By default, only the more important P