Poor Performance from CD-ROM-Based Program
- Click Start, point to Settings, click Control Panel, and then double- click System.
- On the Performance tab, click File System.
- Click the CD-ROM tab.
- Move the Supplemental Cache Size slider to the right to allocate more random access memory (RAM) for caching data from the CD-ROM drive or to the left to allocate less RAM for caching data.
Note that many multimedia programs perform better with a smaller cache because these program tend not to reuse data.
- For reading continuous data, such as .avi files, use a higher setting in the Optimize Access Pattern For box. For reading random data, increase the Supplemental Cache Size setting and decrease the Optimize Access Pattern For setting.
- Click OK, and then click Close. When you are prompted to restart your computer, do so.
The Optimize Access Pattern For setting is based on a 64K cache (single-speed read ahead plus 14K random access cache). This is incremented in 50Kincrements depending on the CD-ROM drive speed. It is an active bufferstoring data initially read from the CD-ROM.
The default cache size is not based on the CD-ROM drive, but on the amountof RAM in the computer, as follows:
- For computers with less than 8 MB of RAM, the default setting is single-speed read ahead cache (50K) + small random access cache (14K).
- For computers with from 8 to 12 MB of RAM, the default setting is double-speed read ahead cache (100K) + medium random access cache (512K).
- For computers with more than 12 MB of RAM, the default setting is quad-speed read ahead cache (200K) + large random access cache (1024K).
Article ID: 141368 - Last Review: 10/25/2013 22:36:00 - Revision: 2.0
- kbnosurvey kbarchive kbenv kbhardware kbprb KB141368