Gathering I/O measurement data during an I/O operation process
First Claim
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1. A method for obtaining I/O measurement data, the method comprising:
- in response to executing a start subchannel instruction, starting an I/O operation process;
obtaining I/O measurement data associated with the performance of the I/O operation process during the I/O operation process;
saving the obtained I/O measurement data;
generating an I/O interrupt at the completion of the I/O operation process; and
in response to executing a test subchannel instruction, storing the obtained I/O measurement data in an IRB memory location specified by the test subchannel instruction.
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Abstract
I/O measurement data associated with the performance of an I/O operation process is gathered during the I/O process. The I/O measurement data is saved in an IRB memory location specified by a test subchannel instruction. An I/O interrupt signals the completion of the I/O operation process.
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Citations
20 Claims
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1. A method for obtaining I/O measurement data, the method comprising:
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in response to executing a start subchannel instruction, starting an I/O operation process;
obtaining I/O measurement data associated with the performance of the I/O operation process during the I/O operation process;
saving the obtained I/O measurement data;
generating an I/O interrupt at the completion of the I/O operation process; and
in response to executing a test subchannel instruction, storing the obtained I/O measurement data in an IRB memory location specified by the test subchannel instruction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer program product for obtaining I/O measurement data, the computer program product comprising:
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a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising;
in response to executing a start subchannel instruction, starting an I/O operation process;
obtaining I/O measurement data associated with the performance of the I/O operation process during the I/O operation process;
saving the obtained I/O measurement data;
generating an I/O interrupt at the completion of the I/O operation process; and
in response to executing a test subchannel instruction, storing the obtained I/O measurement data in an IRB memory location specified by the test subchannel instruction. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system for obtaining I/O measurement data, the system comprising:
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a memory;
a computer system in communication with the memory, The computer system comprising an instruction fetching unit for fetching instructions from memory and one or more execution units for executing fetched instructions;
wherein the computer system includes instructions to execute a method comprising;
in response to executing a start subchannel instruction, starting an I/O operation process;
obtaining I/O measurement data associated with the performance of the I/O operation process during the I/O operation process;
saving the obtained I/O measurement data;
generating an I/O interrupt at the completion of the I/O operation process; and
in response to executing a test subchannel instruction, storing the obtained I/O measurement data in an IRB memory location specified by the test subchannel instruction. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification