mbw(1) [debian man page]

mbw(1)							      General Commands Manual							    mbw(1)

NAME

       mbw - Memory BandWidth benchmark

SYNOPSIS

       mbw [options] arraysize_in_MiB

DESCRIPTION

       mbw determines available memory bandwidth by copying large arrays of data in memory.

OPTIONS

       -q     Quiet; suppress informational messages.

       -a     Suppress printing the average of each test.

       -n <number>
	      Select number of loops per test

       -t <number>
	      Select  tests  to  be  run.  If no -t parameters are given the default is to run all tests. -t0: memcpy() test, -t1: dumb (b[i]=a[i]
	      style) test, -t2: memcpy() with arbitrary block size

       -b <bytes>
	      Block size in bytes for -t2.

       -h     Show quick help.

USAGE

       mbw will allocate two arraysize arrays in memory and copy one to the other.  Reported 'bandwidth' is the amount of  data  copied  over  the
       time this operation took.

       Obviously  mbw  needs twice arraysize MiBytes (1024*1024 bytes) of physical memory - you'd better switch off swap or otherwise make sure no
       paging occurs. Needless to say that it should not be run on a busy system.

TODO

       Multiple thread support.  Better configurability, including using getopt() for parsing arguments.

AUTHOR

       andras.horvath@gmail.com

memory bandwidth benchmark					   Apr 26, 2006 							    mbw(1)

AMT(8)							    BSD System Manager's Manual 						    AMT(8)

NAME

     amt -- Abstract Machine Test Utility

SYNOPSIS

     amt [-m] [-p] [-q] [-s]

DESCRIPTION

     The amt utility is used to verify that the low level functions necessary to enforce requirements of the Controlled Access Protection Profile
     (CAPP) are working correctly.

     The amt utility must be executed with sufficient privileges and performs the following tests:

     Memory Read and Write
	     This test allocates between 5% to 10% of physical memory and writes data to it, then reads the memory back to ensure the values writ-
	     ten remain unchanged.

     Memory Separation and Protection
	     This test ensures that user space programs cannot read and write to areas of memory that is protected or is not shared.

     Privileged Instructions
	     This test ensures that the enforcement of the property that privileged instructions should only be in supervisor mode is still in
	     effect.  The set of privileged instructions tested to confirm this is architecture dependent.

     The options are as follows:

     -m      Skip the memory test.

     -p      Skip the privileged instructions test.

     -q      Suppress the screen output.

     -s      Skip the memory separation and protection test.

EXIT CODES

     <0      An error occured in executing the tests.

     =0      All the tests passed.

     >0      The number of tests that failed or were skipped.

NOTES

     The overall result (pass or fail) is logged in the audit trail and system log.  The auditd(8) daemon must already be running for the results
     to be stored in the audit trail file.

     One of the above test may be skipped without getting a negative result.  A test is skipped either with one of the above command-line options
     or automatically if there is not a test compatiable with the Target Of Evaluation (TOE). The audit administrator may want to perform the mem-
     ory test only on startup since it can have large negative impact on the system performance.

SEE ALSO

     audit(2) auditd(8) syslog(3) syslogd(8)

BSD
								  August 14, 2008							       BSD