Alpha Microsystems Eagle 100 Specifikace stáhnout pdf (Strana 88)

Page D-4 Appendix D

From the AMOS prompt, you can type:

COMPAT COMPAT.DAT

RETURN

or you can add this same command into your system initialization command file.

If you simply enter the command:

COMPAT

RETURN

you will get a display showing the list of programs that have been selected for the

special cache control. Also, you will get some statistical information in the form of the

total number of CPU context switches which are non-cached, and the percentage of the

non-cached context switches that each of the selected programs caused. A display like

the one shown below, which has a very high percentage of non-cached CPU context

switches, would indicate that system performance is hindered, because very little use of

the instruction cache it taking place.

The following programs run with internal cache disabled:

STIC (active in 88.7% of total context switches, 99.6% of non-cached)

FAXUIT (active in 0.2% of total context switches, 0.3% of non-cached)

A total of 89.0% of context switches were non-cached

If you are having problems getting a certain software package to run on your

Roadrunner, try adding the program to the list of programs in the COMPAT.DAT file.

You may find the program will run with the instruction cache disabled.

PDI-00172-60, Rev. A02

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Alpha Microsystems Eagle 100 Specifikace Strana 88