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Cream of the Crop 20 (Terry Blount) (1996).iso
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READFILE.TXT
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ReadFile 1.10 - http://ourworld.compuserve.com/homepages/gvollant/readfile.htm
This small freeware allow you test speed of memory copy and disk transfer speed
under Windows 95 and Windows NT. This is a Win32 console apps.
Usage : READFILE test memcopy speed
READFILE filespec test file reading (bypass cache)
READFILE filespec /d test file reading + copy mem
READFILE filespec /c test file reading + compute CRC32
READFILE filespec /s test file reading + rec. dir parse
READFILE filespec /l test file reading + listing output
READFILE without parameters test the speed of copy big block of memory (1 MB)
READFILE with filespec parameter test speed of readfile file. Example :
C:\> READFILE.EXE *.ima
ReadFile 1.0 - http://ourworld.compuserve.com/homepages/gvollant/readfile.htm
File= 3860 Kb/Sec with 1474560 bytes : Distwi25.ima
File= 4084 Kb/Sec with 1474560 bytes : DISTWI22.IMA
Average = 3850 Kb/Sec with 2949120 bytes (total : 765 msec)
The file are opened with FILE_FLAG_NO_BUFFERING parameters, so it will not
copy the file in the cache.
I suggest you test it on big (more than 1 MB), unfraggmented file for testing
the real transfer speed of your hard disk (or network unit) in sequential read.
Under Windows NT, it's VERY useful start performance monitor before use READFILE:
- Start PERFMON.EXE
- Add CPU in the chart
With a modern SCSI BusMaster interface (By example, Adaptec 2940), you'll have
very small CPU usage while reading (10 % of CPU for 4 MB/Sec), with a normal
IDE Interface, you'll have 100 % of CPU used by the disk operation !
I've heard that for latest Pentium motherboard with Intel triton chipset, it exist
a BusMaster IDE driver (ftp://ftp.winsite.com/pub/pc/winnt/drivers/other/triton.zip).
Somes more up-to-date drivers can be found at http://web2.airmail.net/ksm/software.htm
I've no IDE disk actually, if you have chance test it, email me !
Another usage of ReadFile is produce a listing of file with CRC (can be useful for
checking integrity). You can go to a directory and enter :
READFILE *.* /c /s /l > LISTCRC.TXT to produce a file with CRC
Gilles Vollant
100144.2636@compuserve.com