Random throughput is also highly skewed by the relationship between the test file size and the FAT allocation unit size, presumably due to the computational overhead of following the FAT to ultimately calculate disk block addresses.
These tests have been chosen since they form the basis of storage performance testing using IOMeter in current systems. 512-byte (single sector) random read IOPS, sector aligned.8K Random (IOPS) - 70% read, 8K aligned.Note: These tests run in isolation that is, no performance test is undertaken when specified. signaltest is an interactive test mode that is design to enable assessment of signal quality (with an osciloscope) at various points in the system.With the default 4MB test file, run time is typically 7 to 15 minutes on a 4.77MHz 8088. mediatest performs a 10-pass pattern test.Two test programs are included, primarily designed to facilitate the development of the XT-IDE prototypes but with potential usage beyond this, testing system and storage stability and reliability. readonly: to perform a read-only test against an existing test file.Įxample: disktest size=8M maxseeks Reliability Test Options.Value is in bytes, specify K or M as required (examples: size=4M (default), size=16M, size=300K).
#Dos disk size command free#
To use all free space use maxsize instead.
size=nn: specify the test file size, which will be truncated to available free space.minseeks: 32 seeks (use for floppy drives).Specify /? or -h, to display command line help.
The test file size will be truncated to available free space if it is less. With no command line parameters, a file-system based performance test will be performed, with a test file size of 4MB and 256 seeks.