31.1 About Capacity Planning for Oracle Fusion Middleware While performance tuning can be defined as optimizing your existing system for better performance, capacity planning determines what your system needs (and when it needs it) to maintain performance in both steady-state and peak usage periods. Capacity Planning involves designing your solution and testing the configuration, as well as identifying business expectations, periodic fluctuations in demand, and application constraints. You need to plan carefully, test methodically, and incorporate design principles that focus on performance.
Before deploying any application into a production environment, the application should be put through a rigorous performance testing cycle. Creating an effective Capacity Management plan includes some of the same steps as performance planning:. Step 1:. Step 2:.
Step 3:. Step 4. Table 31-1 Capacity Planning Factors to Consider Capacity Planning Questions For more information see, What are your performance goals and objectives? How many users need to run simultaneously (concurrently?) Is the simulated workload adequate? (Is the workload likely to increase?) Is the Oracle Fusion Middleware deployment configured to support clustering and other high availability factors? Does the hardware meet the configuration requirements? Do you have adequate JVMs to support your users?
Is the database a limiting factor? 31.2 Determining Performance Goals and Objectives The first step in creating an effective capacity management plan is to determine your network load and performance objectives. You need to understand the applications deployed and the environmental constraints placed on the system. Ideally you have information about the levels of activity that components of the application are expected to meet, such as:. The anticipated number of users.
The number of concurrent sessions. The number of SSL connections required. The number and size of requests. The amount of data and its consistency.
Determining your target CPU utilization. Performance objectives are limited by constraints, such as. The configuration of hardware and software such as CPU type, disk size versus disk speed, sufficient memory. The ability to interoperate between domains, use legacy systems, support legacy data. The security requirements and use of SSL. SSL involves intensive computing operations and supporting the cryptography operations in the SSL protocol can impact the performance of the WebLogic Server.
Development, implementation, and maintenance costs. You can use this information to set realistic performance objectives for your application environment, such as response times, throughput, and load on specific hardware. 31.4 Identifying Bottlenecks in Your System Bottlenecks, or areas of marked performance degradation, should be addressed while developing your capacity management plan. If possible, profile your applications to pinpoint bottlenecks and improve application performance. Oracle provides the following profilers:.
Oracle Jrockit Mission Control provides profiling capabilities for processes using Jrockit JVM. Oracle Application Diagnostics provides profiling capabilities for java processing using SUN JDK. The objective of identifying bottlenecks is to meet your performance goals, not eliminate all bottlenecks. Resources within a system are finite.
By definition, at least one resource (CPU, memory, or I/O) can be a bottleneck in the system. Planning for anticipated peak usage, for example, may help minimize the impact of bottlenecks on your performance objectives. There are several ways to address system bottlenecks.
Some common solutions include:. 31.4.4 Increasing Memory or CPU Aggregating more memory and/or CPU on a single hardware resource allows localized communication between the instances sharing the same hardware. More physical memory and processing power on a single machine enables the JVMs to scale and run much larger and more powerful instances, especially 64-bit JVMs. Large JVMs tend to use the memory more efficiently, and Garbage Collections tend to occur less frequently. In some cases, adding more CPU means that the machine can have more instruction and data cache available to the processing units, which means even higher processing efficiency.
Oracle Database Capacity Planning
See for more information. 31.4.6 Segregation of Processes and Hardware Interrupt Handlers When planning for the capacity that a specific hardware resource can handle, it is important to understand that the operating system may not be able to efficiently schedule the JVM processes as well as other system processes and hardware interrupt handlers. The JVM may experience performance impacts if it shares even a few of its CPU cores with the hardware interrupt handlers. For example, disk and network-intensive applications may induce performance impacts that are disproportionate to the load experienced by the CPU. In addition, hardware interrupts can prevent the active Java threads from reaching a 'GC-safe point' efficiently. Separating frequent hardware interrupt handlers from the CPUs running the JVM process can reduce the wait for Garbage Collections to start. It may also be beneficial to dedicate sibling CPUs on a multi-core machine to a single JVM to increase the efficiency of its CPU cache.
If multiple processes have to share the CPU, the data and instruction cache can be contaminated with the data and instructions from both processes, thus reducing the amount of the cache used effectively. Assigning the processes to specific CPU cores, however, can make it impossible to use other CPU cores during peak load bursts. The capacity management plan should include a determination on whether the CPUs should be used more efficiently for the nominal load, or should there be some extra capacity for a burst of activity. 31.5 Implementing a Capacity Management Plan Once you have defined your performance objectives, measured your workload, and identified any bottlenecks, you must create and implement a capacity management plan. The goal of your plan should be to meet or exceed your performance objectives (especially during peak usage periods) and to allow for future workload increases. To achieve your performance objectives, you must implement your management plan and then continuously monitor the performance metrics as discussed in.
Since no two deployments are identical, its virtually impossible to illustrate how a capacity management plan would be implemented for all configurations. Capacity planning is an iterative process and your plan must be calibrated as changes in your workload or environment change. The following section provides key factors that should be addressed in the plan.
31.5.1 Hardware Configuration Requirements There is no single formula for determining your hardware requirements. The process of determining what type of hardware and software configuration involves assessment of your system performance goals and an understanding of your application. Capacity planning for server hardware should focus on maximum performance requirements.
The hardware requirements you have today are likely to change. Your plan should allow for workload increases, environment changes (such as added servers or 3rd party services), software upgrades (operating systems, middleware or other applications), network connectivity and network protocols. 31.5.1.1 CPU Requirements Your target CPU usage should not be 100%, you should determine a target CPU utilization based on your application needs, including CPU cycles for peak usage. If your CPU utilization is optimized at 100% during normal load hours, you have no capacity to handle a peak load. In applications that are latency sensitive and maintaining the ability for a fast response time is important, high CPU usage (approaching 100% utilization) can reduce response times while throughput stays constant or even increases because of work queuing up in the server. For such applications, a 70% - 80% CPU utilization recommended. A good target for non-latency sensitive applications is about 90%.
31.5.1.2 Memory Requirements Memory requirements are determined by the optimal heap size for the applications you are going to use, for each JVM co-located on the same hardware. Each JVM needs up to 500MB in addition to the optimal heap size; the actual impact to performance depends on the JVM brand, and on the type of application being run. For example, applications with more Java classes loaded need more space for compiled classes. 32-bit JVMs normally cannot exceed a limit of approximately 3GB on some architecture when a limit is imposed by the hardware architecture and the Operating System.
It is recommended to reserve some memory for the Operating System, IO buffers and shared-memory devices. 31.5.4 Database Configuration To maintain sustained performance, you must ensure that your existing database can scale with the increases in capacity planned for the application server tier.
Tuning the database parameters and monitoring database metrics during peak usage, can help you determine if the existing database resources can scale to handle increased loads. You may need to add additional memory or upgrade the database hardware configuration. For more information on tuning an Oracle database, see the.
In some cases, however, you may find that the database is still not able to effectively manage increases in load, even after increasing the memory or upgrading the CPU. In these situations, consider deploying an Oracle Real Application Cluster (Oracle RAC) environment to handle the increases.
Oracle RAC configurations not only provide enhanced performance, but they can also improve reliability and scalability. For more information on Oracle RAC, see. Scripting on this page enhances content navigation, but does not change the content in any way.
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Storage Capacity Planning Spreadsheet
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Project Management Template for Excel's name says it all: It adds a basic but flexible project management tool to Microsoft Excel, which is exactly where you need it. This Excel template from Business Spreadsheets is free to try for 30 days.
It runs in Windows NT to 8 (including Server) and requires Microsoft Excel 97 or better. Installing Project Management Template is extremely easy: Extract the zipped download and click it to open it in Excel. The first sheet, Resources, displays four modules: Project Parameter, Project Resources, Human Resources, and Control Panel. We entered a name, date, and preliminary deadline for our yet-undefined project. You can add project participants or define a budget, if you have the data, but we clicked the Control Panel's Project Definition to sample the preconfigured definitions on the Pre-Defined sheet. Task, Schedule, and Status sheets also offered preconfigured tables.
It's particularly easy to export Schedule sheets, which helps keep team members up to date (and excuses at a minimum). Solucionario demidovich pdf. The Status sheet's Earned Value Analysis tool also tracks Historical Project Performance by SPI and CPI. While Project Management Template for Excel can't match the capabilities of enterprise-class project management solutions, it also has a cheaper price tag.
With Project Management Template, your project data starts where it ends up anyway, in Excel. Editors' note: This is a review of the trial version of Project Management Template for Excel 2.2. The Project Management template for Excel is designed as a generic Excel based solution to plan and manage projects. The ability to build the project budget as tasks are identified assists with the requirements for business case project proposals, valuation analysis and securing required project funding. Project dynamics can be altered and performance monitored with earned value analysis throughout the complete project life cycle.
Manufacturing Capacity Planning Spreadsheet
The Project Management template for Excel provides the ability to define the project budget as tasks are defined. Project phases, task titles, holidays and other key project parameters can be predefined to accelerate work flow. Task dependencies and timing constraints are taken into account for the automatic calculation of task timing.
A project Gantt schedule with daily, weekly or monthly intervals is created automatically with embedded task information. The project status report details overall project progress based on earned value analysis with trends displayed for cost and schedule performance indices. Individual workbooks with task lists for each project participant can be generated and subsequent batch import function used to automate the update of the project progress and status. The Project Management template for Excel is compatible with all versions of Excel for Windows and Excel 2016, 2011 or 2004 for Mac as a cross platform project management solution.
Full Specifications What's new in version 3.1 Compatible with Excel 2016. General Publisher Publisher web site Release Date October 30, 2015 Date Added October 30, 2015 Version 3.1 Category Category Subcategory Operating Systems Operating Systems Windows 98/Me/NT/2000/XP/2003/Vista/Server 2008/7/8/10 Additional Requirements Microsoft Excel 97 or higher Download Information File Size 184.81KB File Name projman.zip Popularity Total Downloads 62,638 Downloads Last Week 56 Pricing License Model Free to try Limitations 30-day trial Price $26.
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