Method of determining data transfer rate of a device by measuring the transfer rate of data between a virtual drive and the device

• US 6,366,969 B1
• Filed: 09/17/1998
• Issued: 04/02/2002
• Est. Priority Date: 09/17/1998
• Status: Expired due to Term

• Current Assignee: Micron Technology, Inc.
• Original Assignee: Micron Technology, Inc.
• Inventors: Hanson, James H.
• Primary Examiner(s): Lee, Thomas
• Assistant Examiner(s): ELAMIN, ABDELMONIEM I
• Application Number:
  US09/156,369
• Time in Patent Office: 1,293 Days
• Field of Search: 710/52, 710/58, 710/60, 706/920, 716/16, 711/113
• US Class Current: 710/52
• CPC Class Codes: G06F 11/3485 for I/O devices
• CPC Class Codes: Y10S 706/92 Simulation

Abstract

A method of assessing performance of a device, such as a hard drive, in a computer system. The method allows measurement of data transfer rates during read and write operations from and to the hard drive. The method establishes a virtual drive in random access memory (RAM) subsystem to act as a destination and source for the data read from and written into the hard drive. The method determines the data transfer rate of the hard drive by monitoring the duration of the data transfer between the hard drive and virtual drive. The method achieves consistent and reliable assessment of performance of the hard drive.

Claims

1. A method of assessing performance of a device in a computer, the method comprising:

establishing a virtual drive;

transferring data between the virtual drive and the device; and

measuring the transfer rate of data between the virtual drive and the device.

2. The method as defined in claim 1, wherein the act of establishing a virtual drive includes the act of designating a RAM space in the main memory.

3. The method as defined in claim 1, wherein the act of establishing a virtual drive includes the act of registering a RAM drive in a drive register.

4. The method as defined in claim 1, wherein the act of establishing a virtual drive includes the act of resetting the computer to detect the presence of the virtual drive.

5. The method as defined in claim 1, wherein the act of measuring the transfer rate includes the act of recording a start time and a stop time of the data transfer.

6. The method as defined in claim 5, wherein the act of measuring the transfer rate includes the act of dividing the size of data by the difference between the start time and stop time.

7. The method as defined in claim 1, wherein the act of transferring data includes the acts of:

placing a file in a hard drive;

sending the file from the hard drive to the virtual drive; and

receiving the file in the virtual drive.

8. The method as defined in claim 1, wherein the act of transferring data includes the acts of:

placing a file in the virtual drive;

sending the file from the virtual drive to the hard drive; and

receiving the file in the hard drive.

9. A method of measuring performance of a hard drive in a computer, the method comprising:

establishing a RAM drive in the computer;

transferring a file from the RAM drive to the hard drive;

measuring the duration of time needed to transfer the file from the RAM drive to the hard drive; and

determining a data transfer rate of the hard drive.

10. The method as defined in claim 9, further comprising copying the file to the RAM drive.

11. The method as defined in claim 9, wherein the act of establishing the RAM drive includes the act of designating a RAM space in the main memory of the computer.

12. The method as defined in claim 9, wherein the act of determining the data transfer rate includes the act of dividing the size of the file by the duration of time needed to transfer the file.

13. A method of measuring performance of a hard drive in a computer, the method comprising:

establishing a RAM drive in the computer;

transferring a file from the hard drive to the RAM drive;

measuring the duration of time needed to transfer the file from the hard drive to the RAM drive; and

determining a data transfer rate of the hard drive.

14. The method as defined in claim 13, further comprising copying the file to the hard drive.

15. The method as defined in claim 13, wherein the act of establishing the RAM drive includes the act of designating a RAM space in the main memory of the computer.

16. The method as defined in claim 13, wherein the act of determining the data transfer rate includes the act of dividing the size of the file by the duration of time needed to transfer the file.