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In Web Application Server, service response time can be expressed as measurement of customer satisfaction. Even if there are some bugs in a system, if the bug does not cause any problem in service response time or site’s functionality, it cannot be seen as a problem. As such, even if there is no bug found in the system, if the service response time is not fast enough to fulfill customer satisfaction, the system itself has a problem and cannot be considered normal. Service response time is an important information source in measuring system’s stability and diagnosing system problems. Following documentation describes using service response time to resolve system performance issues and why monitoring the system resource alone is correct approach.
By jennifersoft on October 22, 2007 15:11 (Hit : 15139)
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An administrator has found some transactions with delayed response time (8 + sec). Detailed information about one of the transactions is accessed quickly using the X-Viewer and following log data was retrieved. Please see below for the actual content in the X-Viewer.
By kyh on October 22, 2007 13:26 (Hit : 1106)
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How many people are using the website at any given moment? Concurrent User is important information for every website administrators and operations manager because the capacity of a system can be measured in terms of maximum concurrent users, at which point system performance begins to degrade noticeably if more users browse the website. Measuring concurrent user accurately and analyzing relationship between concurrent user count and system performance is necessary to ensure high-level service to users.
By kyh on October 22, 2007 13:24 (Hit : 2477)
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Service response time is one of most important factor in determining website visitor’s satisfaction level. While it is important to prevent system downtime, preventing system crashes alone isn’t enough for today’s web system management and administration. Website users must be able to surf through the site with ease and use waiting time and site loading time must be minimized. Website with slow response time tends to frustrate website visitors and it is one of leading cause of deterioration in customer satisfaction level, and ultimately, loss of the customers.
By Sungjo Kim on June 02, 2007 15:03 (Hit : 2934)
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Why does everyone talk about Jennifer? Out of many Java application monitoring solutions in existence, the reason why Jennifer stands out is because it utilizes its own unique and revolutionary concept. Jennifer, created by the field engineers with years of performance tuning experience, has something that no other solutions have.
By JenniferSoft on May 25, 2007 16:37 (Hit : 4156)
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System performance optimization is to make the system perform at an optimum state with the limited assigned resources. For maximum performance with given resource, every performance bottleneck has to be eliminated except for the system resources (CPU, MEM, NET, etc.). The system resources (except for improper use of resources) are no longer an issue as it can be resolved by simply adding more of it. Performance obstacles refer to the condition when the service is not possible for any reason including system failure due to bugs. System optimization generally includes “tuning” for maximizing the amount of process as well as removing performance obstacle and others.
By 제니퍼소프트 on May 18, 2007 23:07 (Hit : 1638)
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When coding with Java, the developers typically do not manage the memory usage themselves; JVM manages the memory on its own. This is a concept that was non-existent in C/C++ and brought a lot of excitement among developers, playing an critical role in Java language’s rising popularity all over the world. But despite its revolutionary concept, memory problems still occur in Java. Though not as frequently as C/C++, OutOfMemoryError is occasionally encountered, causing headaches for many administrators and developers.
By 제니퍼소프트 on May 18, 2007 22:15 (Hit : 3595)
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In Web Application Server, service response time can be expressed as measurement of customer satisfaction. Even if there exist some bugs in a system, if the bug does not cause any problem in service response time or site’s functionality, it cannot be seen as a problem. As such, even if there is no bug found in the system, if the service response time is not fast enough to fulfill customer satisfaction, the system itself has a problem and cannot be considered normal.
Service response time is an important information source in measuring system’s stability and diagnosing system problems. Following documentation describes using service response time to resolve system performance issues and why monitoring the system resource alone is not correct the approach.
By 제니퍼소프트 on May 18, 2007 21:54 (Hit : 1674)
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So, How do you widen the funnel stem in context of WAS administration? Widening the funnel stem means improving application’s overall ability to process the incoming requests. the stem of the funnel can be expressed as the bottle neck of the system. For example, if the DB is experiencing performance problem and it cannot provide data to the application fast enough, then DB is the bottleneck of the system. While DB sends and receives data, other components that are not experiencing performance issue have to wait for their turn to be serviced by the DB, causing increase in service response time. To improve response timel, the bottleneck must be removed. Solution can be tuning inefficient query or upgrading to faster DB hardware etc…
By 제니퍼소프트 on May 06, 2007 07:23 (Hit : 1794)
