Hack 55 Fix the Windows 95 File-Caching Bug 
Implement this hack to fix the
"Typical Role of This Computer" bug
in Windows 95.
Windows 95/98/Me provide a bit of disk performance control
through the "typical
role" settings system parameter accessible through
the Hard Disk tab of the My Computer/Properties dialog, shown in
Figure 5-17. This setting does not control the
amount of memory allocated for disk caching by
VCACHE; instead it
sets aside a specific amount of RAM to hold look-up references about
most recently used files and folders.
The number of folders and files tracked, and the amount of memory for
storing the folder and file references, varies depending on the
"typical role" setting, as listed
in Table 5-5.
Table 5-5. "Typical role" and its caching allocations for Windows 95/98/Me|
Role
|
Number of accessed folders cached
|
Number of accessed files cached
|
RAM used
|
|---|
|
Desktop
|
32
|
677
|
10 KB
| |
Mobile/Docking
|
16
|
337
|
5 KB
| |
Network Server
|
64
|
2,729
|
40 KB
|
The "typical role" settings for
Windows 95 are incorrect according to
Microsoft (http://support.microsoft.com/default.aspx?scid=kb;en-us;138012).
The values for folders and files are reversed for
Mobile and Network settings. Only the
Desktop role is correct. If the Desktop setting seems right to you,
leave the settings alone. If Mobile or Network settings appeal to
you, then you need to correct or modify the values stored in the
Windows Registry by following these steps:
Start the Windows Registry editor by selecting Start and then Run.
Type in REGEDIT and then click OK. In the left pane of the Registry Editor double-click
HKEY_LOCAL_MACHINE. Double-click Software, then double-click Windows, then double-click
CurrentVersion. Click once on the FS_Templates listing. Notice two data entries in the right pane, one named
NameCache and the other
PathCache. If the "typical
role" for this computer is Network (more folder and
file lookup caching), enter the values shown under
Network. If it's Mobile (less
memory used), enter the values shown under Mobile: Network
NameCache a9 0a 00 00
PathCache 40 00 00 00
Mobile
NameCache 51 01 00 00
PathCache 10 00 00 00
When you are finished, close the Registry Editor and then restart
your computer for the new values to take effect.
 |
If later you select the Desktop role, these values will be changed
correctly for that role, but if you select Mobile or Network again,
the values will be changed to the improper settings you had
before.
|
|
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