solaris 10 performance monitoring

Monitoring and Analysis of disk I/O performance in Linux 18:10:23Tags: Performance Monitoring Analysis Linux Disk Io Leisure SuSE Linux copyright statement: original works are not reprinted! Otherwise, legal liability will be held. In the past two days, I found that a serve

Full-featured built-in analyzer such as jconsole and visualvm sometimes cost more than they cost performance-especially in systems running on production software. Therefore, in the 2nd articles focusing on Java performance monitoring, I will introduce five command line analysis tools, allowing developers to focus only on one aspect of the running Java Process. JD

10 is not normal, the state of the server is very dangerous. The load on top is similar to the run queue per second. If the running queue is too large, it means that your CPU is busy, which generally results in high CPU usage.b represents the blocking process, which is not much to say, the process is blocked, you understand.swpd Virtual memory has been used size, if greater than 0, indicates that your machine is out of physical memory, if not the cau

Linux performance monitoring and analysis---CPUCPU Performance Metrics1. Percentage of CPU used by user processes2. System processes using CPU ratio3. WIO, the rate at which the CPU is idle while waiting for I/O.4. CPU Idle Rate5. Ratio of CPU for context switching6,nice7,real-time8, the length of the running process queue9, average loadThe tools commonly used to

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

Monitor Linux server performance with Munin Monitoring the performance of LINUX hosts is a complex operation, which depends on command line tools and centralized data. Analysis may be very difficult, and a large amount of data is required to establish a relationship to draw a conclusion. Fortunately, we can use some existing tools to build a model for this proces

CPU Performance Metrics 1. Ratio of CPU used by user process 2. Ratio of CPU used by system process 3. Wio, waiting for I/O but the CPU is in idle state ratio. 4. CPU Idle Rate 5. CPU Ratio for context exchange 6,nice 7,real-time 8, run the length of the process queue 9, average load the common tools for monitoring CPU performance under Linux are 1. Iostat Only

the amount of memory that this process is actually consuming. The SHR identifies the memory and library sizes that can be shared with other processes.8, performance monitoring SAR commandSar-u output displays CPU information. The-u option is the default option for SAR. This output shows the CPU usage as a percentageCpuCPU number%userThe time it takes to run a process in user mode%niceThe time it took to ru

is more versatile than the Iptraf to test the throughput of the terminal. Start NetServer on the server side first:# NetServer Starting NetServer at Port 12865Starting netserver at hostname 0.0.0.0 Port 12865 and family Af_unspecThen, on the client test server, perform a TCP test that lasts for 10 seconds:# netperf-h 172.16.38.36-l 10TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 af_inet to 172.16.38.36 (172.16.38.36) port 0 AF_INETRECV send send

is more versatile than the Iptraf to test the throughput of the terminal. Start NetServer on the server side first:# NetServer Starting NetServer at Port 12865Starting netserver at hostname 0.0.0.0 Port 12865 and family Af_unspecThen, on the client test server, perform a TCP test that lasts for 10 seconds:# netperf-h 172.16.38.36-l 10TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 af_inet to 172.16.38.36 (172.16.38.36) port 0 AF_INETRECV send send

In the design of large web site systems, with the popularity of distributed architectures, especially microservices architectures, we decouple the systems into smaller units and build complex systems by constantly adding new, smaller modules, or reusing existing modules. With the increasing number of modules, a single request may involve more than 10 or even dozens of services of the collaborative processing, so how to accurately and quickly locate to

configuration file will look more uniform than opening in the script4. Browser viewChrome refreshes the GHIPTE Web page to seeGhipte, servers, ec2-54-201-82-69, weblog (custom), HTTP, the following monitoring graphs appearWe can generate 200 status codes using Ab-c 100-n http://localhost/Use the Refresh Ghipte browser page to generate a 304 status code650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/5C/0B/wKioL1UaHCijRVkoAAMpNTmsVaU913.jpg

this point, you can open a new terminal.If the terminal does not generate some data flow, then it will not produce so many packets.For example, when using tcpdump to view the packet, it is actually in the traffic generated data flow, so there is a packet generation, this is an internal loop.If this terminal does not produce any data and does not produce any information, then it does not have any packets. The data packet is generated, and the screen (the paused interface) naturally has the data.

platform, such as "Paradigm", "Class", "Interface", "module", "Property" and so on.JIT (Just in Time, instant compilation)When an app written in a high-level language is compiled to IL, the JIT compiler compiles the IL as a local instruction and executes it to maximize platform independence.. NET Platform framework has a natural cross-platform advantage, but Microsoft has made it a unique version of the Windows platform, and fortunately he is now taking the first step in open source and cross-p

platform, and compilers of various high-level languages (such as c#,vb,f#) on the. NET platform convert their textual representations to IL. A variety of different text forms are eventually unified to the way IL is expressed, including. NET platform, such as "Paradigm", "Class", "Interface", "module", "Property" and so on.JIT (Just in Time, instant compilation)When an app written in a high-level language is compiled to IL, the JIT compiler compiles the IL as a local instruction and executes it

When monitoring the internal performance of zabbix, we usually use the following metric to measure the service performance: Nvps, queue, update percent, process busy, pending sync data, cache.By adding corresponding monitoring, zabbix performance problems can be effectively

, the default monitoring is CPU resourcesPidstat-p 1 2 3-trLinux 2.6.32-71.el6.i686 (stephen-pc) 11/16/2011 _i686_ (1 CPU)07:37:04 AM tgid TID minflt/s majflt/s VSZ RSS%MEM Command07:37:06 AM 1-0.00 0.00 2828 1368 0.13 Init07:37:06 AM-1 0.00 0.00 2828 1368 0.13 |__init07:37:06 AM tgid TID minflt/s majflt/s VSZ RSS%MEM Command07:37:08 AM 1-0.00 0.00 2828 1368 0.13 Init07:37:08 AM-1 0.00 0.00 2828 1368 0.13 |__init07:37:08 AM tgid TID minflt/s majflt/s

of work; 3. The process has a low static priority; 4. The process does not belong to the root user. Another program in Linux performance monitoring process management, pdflush, is used to synchronize the content in the memory with the file system. For example, when a file is modified in the memory, pdflush writes it back to the hard disk. # Ps-ef | grep pdflush Root 28 3 0 23:01? 00:00:00 [pdflush] Root 29

Linux system performance monitoring common commands Blog Categories:Technical methods First, Linux server performance concerns 1) CPU -> load: The sum of statistics that represents the tasks that the CPU is processing and waiting to process over a period of time, simple to understand the ratio of the number of threads being processed by the CPU to the number of

:0.00used_cpu_user_children:0.00# Clustercluster_enabled:0# KeyspaceDb0:keys=1,expires=0,avg_ttl=02.monitor (affects performance, use sparingly)127.0.0.1:6379> Help MonitorMONITOR-Summary:listen for all requests received by the server in real timesince:1.0.0Group:server127.0.0.1:6379> MonitorOk1480161369.716981 [0 192.168.1.93:6380] "PING"1480161379.816223 [0 192.168.1.93:6380] "PING"1480161389.930811 [0 192.168.1.93:6380] "PING"1480161400.047882 [0 1