rails performance monitoring

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What can jwebap bring? Jwebap is a component used to monitor the performance of J2EE projects (EJB and webmodule systems). It has the following features: 1) Static Enhancement Based on ASM implementation class, which can be seamlessly deployed in the J2EE system, and the overhead of the system can be almost ignored 2) deployment and use are very simple. For jwebap deployment, you only need to deploy jwebap_core _**. jar and various plugin _**. jar, an

/jstatd.all.policy Remember that the Jstatd.all.policy file must be an absolute path to prevent java.security.AccessControlException:access denied ( Java.util.PropertyPermission java.rmi.server.ignoreSubClasses Write) error.Finally, we can use the JPS command to see if it started successfully:Jps-l The following results are obtained: 9481 Com.bes.enterprise.ee.nodeagent.NodeAgentMain 7329 Com.bes.enterprise.server.Entry 18968 Com.bes.enterprise.server.Entry 15802

Article Title: Linux performance monitoring and tuning (CPU ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In fact, there are many articles on this part on the Internet. Why is this article still available? There are several reasons why it is the motivation of my tra

: disk nameDisktransferspersec: the number of disk transfers per second.Diskreadbytespersec: the amount of data read from the disk per second, measured in bytes.Diskwritebytespersec: the amount of data read from the disk per second, measured in bytes.Percentfreespace: percentage of available disks. 3. Precautions for using win32_perfformatteddata_perfdisk_logicaldisk Note the following before using win32_perfformatteddata_perfdisk_logicaldisk: (1) You cannot use obw.miservice. execquery to execu

time may be caused by a single (or multiple) overloaded processor, many other tools can be used to narrow the cause of the load. to delve deeper into processor usage, the 3 tools described below can provide many different understandings of CPU utilization: Vmstat, Iostat, and top. Each of these tools focuses on different aspects of system monitoring, but can get a different view of the current usage of the processor. In particular, the next step i

Looked at such a tutorial, read a manual, according to the requirements to change a set, system settings, kernel parameters that the idea of a system optimization is silly very naïve: the system optimization is a complex, cumbersome, long-term work, optimization needs to be monitored, collected, tested, evaluated, optimized after testing, collection, evaluation, monitoring, And is a long-term and continuous process, not to say now optimization, testin

Set up performance monitoring Spotlight in Centos The company wants to perform a stress test with a Linux server and Centos6.5. To intuitively display the system performance and better analyze the server, we need to build a monitoring system. Let's go straight to the topic. First, a Linux Server: Centos6.5 Second, inst

For systems running on-line, current database performance monitoring typically monitors the following points:(1) Whether there is obstruction (Blocking);(2) whether there is waiting (waiting), blocking is the lock (locks) waiting;(3) Whether the running time is too long (long running);(4) Whether there is a deadlock (Deadlock);Sys.dm_exec_query_stats and so on, and so on some statistical information, usuall

In addition to the integrated VISUALVM and Jconsole, the JDK itself provides performance tuning monitoring tools such as JPS, Jstack, Jmap, Jhat, and Jstat.In Java development, we sometimes encounter the following problems:OutOfMemoryError, Low memoryMemory leaksThread deadlockLock contention (lock contention)The Java process consumes too much CPU......These problems may be overlooked by many people in thei

Chapter 8 JVM performance monitoring and troubleshooting tools (2), jvm troubleshooting Note: This blog is mainly recorded in "deep understanding of Java Virtual Machine (version 2)" Note: For details about JVM performance monitoring and troubleshooting tools on the command line, see Chapter 7 JVM

APP MetricsHttps://www.app-metrics.ioReal-time performance monitoring for the cross-platform of ASP.Http://www.cnblogs.com/GuZhenYin/p/7170010.htmlThe. Net Core 2.0+ Influxdb+grafana+app Metrics enables real-time performance monitoring across platformsHttp://www.cnblogs.com/landonzeng/p/7904402.htmlOpen source Server

As we all know, there are many factors that affect the network, including latency, conflict, and blocking. Next, let's take a look at the specific Network situation under Linux performance monitoring, and add some of our previous articles. We hope to provide more help to you in terms of Linux performance monitoring.Most Ethernet networks are adaptive because diff

Ntime.asmcgocall It is worth mentioning that if we run a Linux server in our program, we can also run the Go Tool pprof command on our own Windows computer, just replace localhost in the URL with the address of the Linux server. Using Qcachegrind to view performance monitoring results Compared to top, web, SVG and other commands, the most convenient tool to see perform