running monitor

In our development process, we often encounter the need to judge the app to enter the background, or switch to the foreground of the situation. For example, we want to judge the app to switch to the foreground, display an unlock interface, require the user to enter the unlock password to continue operation, we want to judge the app to switch to the background, log the log, or when the user switches back to the foreground, we want to refresh the page data and so on ...Android monitors the app fro

Zabbix uses Omsa to monitor the hardware information of the Dell Server I. Client A. install it in RedHat Linux or CentOS 1. Install the dell yum Source Wget-O-http://linux.dell.com/repo/hardware/latest/bootstrap.cgi | bash 2. Install omsa Yum install srvadmin-all Ps: when some package download times out, run the preceding command again until all download and installation are complete. 3. soft connection 1. ln-s/opt/dell/srvadmin/sbin/omreport/usr/bin

even in Ggsci after starting the jagent jagent boot success, and the status is running, but in the server-side web interface does not see the host Plus The Jagent.log in the Ogg installation directory will report similar errors:The cause of this problem is that the proxy does not have a local datastore, and the proxy side creates the DatastoreGgsci (OGG1) 2> Create DatastoreDatastore createdGgsci (OGG1) 3> stop jagentJagent process is required by oth

In multi-threading, in order to keep the data consistency must be the data or access to the data function lock, in the database this is very common, but in the program because most of the program is single-threaded, so there is no need to lock, but in multi-threading, in order to maintain the synchronization of data, must be locked, Fortunately, the framework has provided us with three locking mechanisms, namely the Monitor class, the lock keyword, an

count such events. The number of processor events monitored by hardware performance counters can visually reflect the hardware execution characteristics of the program, such as the number of instructions executed by the processor, the number of L1 Cache failures, and so on, which is a reliable basis for evaluating and analyzing the performance of the program. PAPI (Performance application Programming Interface) is a set of standard interfaces that can access hardware performance counters on mu

　　Monitoring You can monitor the health of the cloud server ECS instances from multiple dimensions to ensure that the instance is running smoothly. You can monitor the operation of an ECS instance from the following two portals: Instance Details Cloud Monitoring Instance Details Log on to the Cloud Server Management Console. Click an instance in the left-h

response 1, after entering the mouse cursor has, but can not move, press the keyboard number key (NumLock) no response. Please check whether the color of the display is 256 colors, because the use of the Vientiane environment Billing software, when the color is 256 colors, the machine will not respond. Please disable the billing software and change the monitor settings to normal. 2, the machine into the system all normal, working for a period of ti

created is displayed in the right pane. (3) Right-click the agent ready to view, select the agent History option in the pop-up menu, and open the Snapshot Agent History dialog box, as shown in Figure 16-57; (4) Click the Sessions Details button to open the session details of Snapshot Agents dialog box, as shown in Figure 16-58. In this dialog box, you can find out what the Snapshot Agent has done so far, and how long it has been running. Summa

Order The Monitor class is an alternative to Reentrantlock, where the use of monitor is less error-prone, more readable, and has no significant performance penalty than using reentrantlock, and even potential performance is optimized using monitor. Below we overall on the monitor's source code structure to do a comb, in general also in the JDK from the most orig

: While (true) {: t0 Status = Monitor (P2): T1 If (status = 0 ){ Start (P2 ); } }: T2 P2: While (true) {: t0' Status = Monitor (P1): t1' If (status = 0 ){ Start (P1 ); } }: T2' Most directly, assume that P1 and P2 run on two CPUs simultaneously, and the sequence is synchronized between T0 and T1, between T0 and T1, what will happen when P1 and P2 are killed? If it is run on the same CPU, the tas

Replication Class Tools1. Pt-heartbeatFunction Introduction:Monitor MySQL replication latencyUsage Introduction:Pt-heartbeat [OPTION ...] [DSN]--update|--monitor|--check|--stopMeasure how much time is left behind the main MySQL or main PostgreSQL, and you can use this script to update the master or monitor replication, as shown in the following example.Principle: Pt-heartbeat through real copy data to confi

Machine name to manage the virtual machine: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 3525 root 20 0 20.8g 16g 5636 S 58.1 12.8 19499:19 qemu-kvm 3586 root 20 0 20.6g 10g 5636 S 56.1 8.2 18289:31 qemu-kvm129225 root 20 0 6634m 1.2g 5596 S 4.0 1.0 1001:20 qemu-kvm129268 root 20 0 4946m 707m 5596 S 4.0 0.5 964:44.63 qemu-kvm 3664 root 20 0 5561m 1.2g 5608 S 3.6 0.9 1318:51 qemu-kvm Although the relationship between p

Linux---> Monitor JVM ToolsShkingShkingPublish time: 2013/10/10 01:27 read: 2642 favorites: 26 Likes: 1 comments: 0JDK built-in tools useJPS (Java Virtual machine Process Status Tool)View all JVM processes, including process IDs, process-initiated paths, and so on.Jstack (Java Stack Trace)① observe the current state of all threads in the JVM and the current thread status.The ② system crashed? If a Java program crashes generating a core file, the Jstac

[Original Pag] Since the release of JDK 5 The JVM uses JMX technology to provide information on performance and resource consumption of T He applicationsrunning in the JVM. Together with the Jconsole tool we can-information to monitor our applications and locate problems. To keep applications running smoothly it's important to is able to get information about the performance and resource C Onsumption of Th

access path. If this is not configured, the access path is: http://localhost:64000 4. Activate SBA using @enableadminserver annotation: @SpringBootApplication @EnableScheduling @EnableAdminServer public class Svcmonitorapplication { Public static void Main (string[] args) { springapplication.run (svcmonitorapplication.class, args); } By the monitoring side (Spring-boot project) to the monitoring side register themselves: 1, add dependencies: 2. Configuration file (application.yml) confi

Encountering performance bottlenecks, the system is being dragged down, which is no doubt the administrator does not want to see the situation. Starting with Windows Vista, Microsoft has stepped up its monitoring of the performance of the system's resources, the main technical means of the so-called performance counters. Using these counters, we can monitor the system effectively, and then find and solve the performance bottleneck of the system. This

Tags:-o get key nbsp Tar Date Implementation Path operationRecently the company needs to monitor Tomcat's services under Linux, and once the Tomcat service is out of the ordinary or down, restart Tomcat to ensure that the service is up and running, because a shell script under Linux can achieve this effect. Below are the steps for the Linux shell script to monitor