To:6.270
cc:
Subject:benchmarking program available
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I have installed a program to test what percent of your CPU is taken
up by background processes (IR reception, shaft encoder routines,
and the like).  

The program lives in a file named "benchmrk.c" in the IC library
directory.  After loading the file, the function "float benchmark()"
will be defined.

The benchmark() routine returns a number approximating the percentage
of CPU cycles AVAILABLE FOR USER PROGRAMS.

Following is a sample transcript.  Notice the difference after the
infrared reception software is enabled.

	- Fred


C> load benchmrk.c
Loading benchmrk.c.
Initializing interrupts
Downloading 3256 bytes (addresses 8000-8CB7):  3256 loaded
Globals initialized.
C> benchmark();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <float> 66.443993
C> benchmark();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <float> 65.561996
C> ir_receive_on();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <void>
C> benchmark();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <float> 50.393997
C> benchmark();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <float> 50.351997
C> load sencdr12.icb
Loading sencdr12.icb.
Initializing interrupts
Downloading 3403 bytes (addresses 8000-8D4A):  3403 loaded
Globals initialized.
C> benchmark();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <float> 63.000000
C> ir_receive_on();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <void>
C> benchmark();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <float> 47.681999
C> benchmark();
Downloading 6 bytes (addresses C200-C205):  6 loaded
Returned <float> 47.447998