Application Servers White Papers
How to Increase I/O Throughput With SAS for Windows' SGIO Feature
Overview SAS users tend to do very large amounts of sequential blocked I/O. When one has several of these type jobs running on a server, SAS tends to overrun the operating system file cache. When this happens on a Windows 2000/2003 server one may be able to take advantage of the SGIO system option to increase the jobs' I/O throughput. SGIO means "Scatter-read/Gather-write Input Output". This is an advanced option that uses a special feature of the Windows operating system. SGIO can tremendously improve performance in some situations. However, SGIO can also degrade performance, so its usage requires some study and experimentation. SGIO bypasses the Windows file cache - understanding this is critical in working with SGIO - so users should learn more about how the cache works.
| Publisher | SAS Institute | File Format | |
|---|---|---|---|
| Date Published | October 2004 | ||
| Format | White Papers | ||
| Topics | |||
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