sybase performance monitoring

same as the following, the block exercise is no longer one by one listed: ====================================================================== Sybase Adaptive Server Enterprise System Performance ====================================================================== Server version:adaptive Server Enterprise/11.9.2/1031/p/nt (IX86)/os 3. Server Name:server is unnamed Run Date:may 28, 2001 Statistic

Performance case 02 -- sybase connection blocking, 02 sybase Symptom:Recently, a problem was reported on the site. during the approval process, the system often gets stuck. The whole system is useless and the browser access is in the loading state. Troubleshooting: 1. generally, when the system crashes, we first think of the memory problem, but the phenomenon i

cache = max memory * 50% Procedure cache size = max memory * 20-30% Number of user connections = N (default = 25) Number of lock = N * Maximum number of locks required by a single user * 120% (Generally, this is difficult to estimate. The reference value provided by senior syabse engineers: 1.8 million for users. I estimate that 100000 is recommended for 10 Gb of data) Number of open objects = 10000 Number of open indexed = 10000 This configuration can basically be used normally. You can down

Some small aspects of database Performance tuning:1. 1 Performance IndexDatabase performance is generally measured in two metrics: response time and throughput. The faster the response, the greater the throughput and the better the database performance. Response time and throughput cannot be improved together in some c

result set at the beginning of the same as the following, each block experiment is no longer one by one listed: ====================================================================== Sybase Adaptive Server Enterprise System Performance ====================================================================== Server version:adaptive Server Enterprise/11.9.2/1031/p/nt (IX86)/os 3. Server Name:server is unn

same as the following, the block exercise is no longer one by one listed: ====================================================================== Sybase Adaptive Server Enterprise System Performance ====================================================================== Server version:adaptive Server Enterprise/11.9.2/1031/p/nt (IX86)/os 3. Server Name:server is unnamed Run Date:may 28, 2001 Statistic

cache, system resources and CPU competition. In SQL Server, there is a level of optimization: • Application Layer-Most of the performance is derived from the optimization of queries in your SQL application, which must be based on a good database design. • Database Layer-Applies resources that are shared in the database tier, including hard drives, transaction logs, and data cache. • Server Layer--there are many shared resources at the server leve

same as the following, the block exercise is no longer one by one listed: ====================================================================== Sybase Adaptive Server Enterprise System Performance ====================================================================== Server version:adaptive Server Enterprise/11.9.2/1031/p/nt (IX86)/os 3. Server Name:server is unnamed Run Date:may 28, 2001 Statistic

same as the following, the block exercise is no longer one by one listed: ====================================================================== Sybase Adaptive Server Enterprise System Performance ====================================================================== Server version:adaptive Server Enterprise/11.9.2/1031/p/nt (IX86)/os 3. Server Name:server is unnamed Run Date:may 28, 2001 Statistic

Tags: trim CTI alt JVISUALVM Memory database query str platoon it substring Phenomenon: Recent field feedback a problem, the system in the approval of the time, often stuck, the whole system is completely useless, browser access to ask in loading state. Investigation: 1. General system hangs the first thought of memory problems, but the phenomenon is loading, that is, there is no hanging, the thread is running, suspect that the thread is blocked. Configuration on JVISUALVM

Performance monitoring tool: 1. Task Manager 2. Performance Logs and alarmsI. Task Manager1. Purpose: display applications running on the system Program Process, CPU, memory, and other usage and statistical information.2. Open Mode (local or remote)1> right-click the blank area in the taskbar and select "Task Manager"2> CTRL + ALT + del ctrl + ALT + end3> Ctrl +

Phenomenon: Recent field feedback a problem, the system at the time of approval, often stuck, the whole system is completely useless, browser access is in the state of loading. Investigation:1. General system hangs the first thought of memory problems, but the phenomenon is loading, that is, there is no hanging, thread is executing, suspect that the thread is blocked, configuration on the JVISUALVM monitoring, the problem after the memory is not full

same as the following, the block exercise is no longer one by one listed: ====================================================================== Sybase Adaptive Server Enterprise System Performance ====================================================================== Server version:adaptive Server Enterprise/11.9.2/1031/p/nt (IX86)/os 3. Server Name:server is unnamed Run Date:may 28, 2001 Statistic

same as the following, the block exercise is no longer one by one listed: ====================================================================== Sybase Adaptive Server Enterprise System Performance ====================================================================== Server version:adaptive Server Enterprise/11.9.2/1031/p/nt (IX86)/os 3. Server Name:server is unnamed Run Date:may 28, 2001 Statistic

Common Linux system performance monitoring commands and linux system performance monitoring URL: http://www.cnblogs.com/myresearch/p/linux-monitor-tools.html.Monitor CPU usage Run the following command: [root@localhost ~]# gnome-system-monitor The graphical tool GNOME System Monitor is displayed, as shown in: Monitor C

, such as competition for data cache, process cache, system resources, and CPU. SQL Server has the following optimization levels:· Application Layer-most performance gains come from the optimization of queries in your SQL application, which must be based on a good database design.· Database layer-resources shared by applications at the database layer. These resources include hard disks, transaction logs, and data caches.· Server layer-there are many s

Introduction to common linux performance monitoring tools and linux performance monitoring tools Record several frequently used ones.1. top/htop As we all know about top, there are several common parameters: (you can also start and interact) -D: Set the delay time-S: accumulative time mode k: End Process q: Exit topZ:

ordered by executions:The top SQL that is sorted by the number of executions of SQL is recorded. This sort shows the number of SQL executions that are within the scope of the monitoring.4.6 SQL ordered by Parse Calls:Top SQL that records the number of soft parse times for SQL. When it comes to soft-parsing (soft prase) and hard-parsing prase, it's impossible to say how Oracle handles SQL.4.7 SQL ordered by sharable Memory:The top SQL that SQL occupie

It is also necessary to perform basic monitoring on a single server or VPS. In the past, Zhao Rong did not monitor VPS, because when some servers were added, his performance became even more tense. There are also a lot of foreign server performance monitoring websites, but it is a little difficult for people like Zhao

System optimization is a complex, complex, and long-term task. monitoring, collection, testing, and evaluation are required before optimization. After optimization, testing, collection, evaluation, and monitoring are also required, it is also a long-term and continuous process. It is not to say that the optimization is now done, the test is done, and it can be done once and for all in the future. It is not