- Home
- Products
- Integration
- Tutorial
- Barcode FAQ
- Purchase
- Company
vb.net 2d barcode generator Real World in Visual C#
Real World EAN13 Creation In C#.NET Using Barcode generation for Visual Studio .NET Control to generate, create GS1 - 13 image in VS .NET applications. www.OnBarcode.comRecognizing EAN / UCC - 13 In Visual C#.NET Using Barcode reader for .NET Control to read, scan read, scan image in .NET framework applications. www.OnBarcode.comThe Importance of Sizing
Draw Bar Code In Visual C#.NET Using Barcode creation for .NET framework Control to generate, create barcode image in VS .NET applications. www.OnBarcode.comBarcode Reader In Visual C# Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications. www.OnBarcode.comAssuming that the database is large, adding memory to a SQL Server system almost always provides a benefit. The value of sizing is in determining how much memory is required and what value it provides. Although the price has dropped in the past few years, memory can still be very expensive. In addition, the larger the memory module, the more expensive it can be. In order to put 32 GB or 64 GB of RAM in your system, you might have to purchase very large modules. Since data is stored in 8-KB pages both on disk and in memory, you might have a problem with page allocation. The number of pages in the buffer cache is equal to the amount of memory divided by the page size (which is 8 KB). Although data is stored in the buffer cache in pages, it is usually used in rows. By keeping together rows that are used together, you can more effectively use the buffer cache. EAN13 Maker In .NET Using Barcode creator for ASP.NET Control to generate, create UPC - 13 image in ASP.NET applications. www.OnBarcode.comEAN 13 Encoder In .NET Using Barcode encoder for .NET Control to generate, create EAN / UCC - 13 image in VS .NET applications. www.OnBarcode.com 6
EAN-13 Supplement 5 Creation In VB.NET Using Barcode generation for .NET framework Control to generate, create GTIN - 13 image in Visual Studio .NET applications. www.OnBarcode.comCode 3 Of 9 Generation In C#.NET Using Barcode encoder for .NET framework Control to generate, create Code 3/9 image in Visual Studio .NET applications. www.OnBarcode.comCapacity Planning
Bar Code Encoder In C# Using Barcode printer for .NET Control to generate, create barcode image in VS .NET applications. www.OnBarcode.comQR Code 2d Barcode Printer In C#.NET Using Barcode encoder for VS .NET Control to generate, create QR Code JIS X 0510 image in VS .NET applications. www.OnBarcode.comFor example, if you have 800 MB of memory allocated to the SQL Server buffer cache, this equates, at 8 KB per page, to 102,400 pages in memory. If you are only using one row per page, this gives you 102,400 rows in memory. If you can actually use an average of 10 rows per page, then you have 1,024,000 useful rows in memory. Since data is typically sorted into clustered indexes, it is important that you cluster on a useful cluster key that might result in efficient memory usage. Painting Data Matrix ECC200 In Visual C# Using Barcode generation for .NET Control to generate, create Data Matrix ECC200 image in .NET framework applications. www.OnBarcode.comUSD8 Drawer In Visual C# Using Barcode maker for VS .NET Control to generate, create Code 11 image in .NET applications. www.OnBarcode.comMonitoring Memory
PDF-417 2d Barcode Creation In VB.NET Using Barcode printer for VS .NET Control to generate, create PDF 417 image in VS .NET applications. www.OnBarcode.comRecognize UPCA In Java Using Barcode scanner for Java Control to read, scan read, scan image in Java applications. www.OnBarcode.comAs discussed in the previous section, Windows Server 2003 Task Manager can be a convenient tool for displaying the amount of memory used and available in the system. The memory utilization can be found in the Performance tab of Task Manager, as shown previously in Figure 6-3. Memory can also be monitored effectively in perfmon. One of the most important perfmon counters is the Pages/sec counter under the Memory object. This counter tells you whether you are experiencing excessive paging. It is okay to have some paging, but if this number is 100 or greater, you have a big problem. In addition, the Percent Usage and Percent Usage Peak counters in the Paging File performance object can also indicate excessive paging in the operating system. Memory counters include the following: Making GS1 - 12 In Visual Basic .NET Using Barcode printer for .NET Control to generate, create UPC Code image in VS .NET applications. www.OnBarcode.comGS1 - 13 Recognizer In Visual Basic .NET Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in .NET applications. www.OnBarcode.comPages/sec Found under the Memory object, this counter provides information on the amount of paging that is happening in the system. This is a key counter that indicates memory is over-allocated. Available Mbytes Also found under the Memory object, this counter indicates how much memory is available for programs to use. Percent Usage Found under the Paging File object, this counter indicates the percentage of the paging file that is currently used. Significant usage indicates serious paging. Percent Usage Peak Also found under the Paging File object, this counter indicates the highest percentage of the paging file that has been used. This can indicate whether you have ever had a significant amount of paging. Make QR In Java Using Barcode printer for Android Control to generate, create QR Code JIS X 0510 image in Android applications. www.OnBarcode.comBarcode Decoder In Visual C#.NET Using Barcode Control SDK for .NET Control to generate, create, read, scan barcode image in VS .NET applications. www.OnBarcode.comThese important Windows memory counters are shown in Figure 6-6. The SQL Server cache-hit ratio can be monitored in perfmon via the buffer cache-hit ratio counter, available through the Buffer Manager performance object. Your goal should be 100 percent; however, anything above 98 percent is acceptable. If you are consistently seeing a much lower cache-hit ratio, you should take steps to attempt to improve this. Code 3 Of 9 Generator In Java Using Barcode generation for Java Control to generate, create Code 3 of 9 image in Java applications. www.OnBarcode.comPaint Code128 In .NET Framework Using Barcode encoder for Reporting Service Control to generate, create Code 128C image in Reporting Service applications. www.OnBarcode.comPart II
System Design and Architecture
Figure 6-6 Perfmon memory counters.
Achieving this goal should be your target, however, it is not always possible to reach a 98 percent cache-hit ratio. With very large databases that are performing large queries, you might not achieve this; however, you should still strive for it.
|
|