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Mistake in caculating Benchmark Average


 
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UNIX Standards and Benchmarks UNIX & LINUX Benchmarks (Version 3.11) UNIX Benchmarks Mistake in caculating Benchmark Average
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Old 02-27-2006
Mistake in caculating Benchmark Average

There is a basic principal that you cannot average averages. The overall result for the benchmark should be calculated by dviding the sum of the target results by the sum of the baseline results. This is not the same as dividing the sum of the index results by 6. Changing the way this is calculated will give a more mathematically valid way of comparing performance from one host to the other.

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sum(n)							     Cyclic Redundancy Checks							    sum(n)

__________________________________________________________________________________________________________________________________________________

NAME
sum - Calculate a sum(1) compatible checksum SYNOPSIS
package require Tcl 8.2 package require sum ?1.1.0? ::crc::sum ?-bsd | -sysv? ?-format fmt? ?-chunksize size? [ -filename file | -channel chan | string ] _________________________________________________________________ DESCRIPTION
This package provides a Tcl-only implementation of the sum(1) command which calculates a 16 bit checksum value from the input data. The BSD sum algorithm is used by default but the SysV algorithm is also available. COMMANDS
::crc::sum ?-bsd | -sysv? ?-format fmt? ?-chunksize size? [ -filename file | -channel chan | string ] The command takes string data or a file name or a channel and returns a checksum value calculated using the sum(1) algorithm. The result is formatted using the format(n) specifier provided or as an unsigned integer (%u) by default. OPTIONS
-sysv The SysV algorithm is fairly naive. The byte values are summed and any overflow is discarded. The lowest 16 bits are returned as the checksum. Input with the same content but different ordering will give the same result. -bsd This algorithm is similar to the SysV version but includes a bit rotation step which provides a dependency on the order of the data values. -filename name Return a checksum for the file contents instead of for parameter data. -channel chan Return a checksum for the contents of the specified channel. The channel must be open for reading and should be configured for binary translation. The channel will no be closed on completion. -chunksize size Set the block size used when reading data from either files or channels. This value defaults to 4096. -format string Return the checksum using an alternative format template. EXAMPLES
% crc::sum "Hello, World!" 37287 % crc::sum -format 0x%X "Hello, World!" 0x91A7 % crc::sum -file sum.tcl 13392 AUTHORS
Pat Thoyts BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category crc of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. SEE ALSO
cksum(n), crc32(n), sum(1) KEYWORDS
checksum, cksum, crc, crc32, cyclic redundancy check, data integrity, security, sum CATEGORY
Hashes, checksums, and encryption COPYRIGHT
Copyright (c) 2002, Pat Thoyts <patthoyts@users.sourceforge.net> crc 1.1.0 sum(n)

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