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If a datafile is able to process I/O requests to it quickly, it is a sign of the good health of the Progress database server. On the other hand, any slowdown in IOPS could indicate a serious processing bottleneck on the server, probably caused by a poor indexing engine or badly structured tables in a datafile. Administrators should hence continuously track the reads/writes to every datafile on the Progress database server, identify the rate at which data related to the datafile was read/written from the buffer, and measure how well the requests were processed by the datafile. For this purpose, you can run the ProFileIoTest test.

This test auto-discovers the datafiles on the Progress database server and reports the rate at which reads/writes were performed on the datafile. This test also reports the rate at which data was read/written from the buffer and the rate at which data is read/written from the disk directly. In the process, I/O processing bottlenecks can be detected and the datafiles that are affected can be identified.

Output of the test : One set of results for every data file of the target Progress database server that is to be monitored.

Measurement	Description	Measurement Unit	Interpretation
Read_operation	Indicates the rate at which read operations were performed on this datafile during the last measurement period.	Reads/Sec
Write_operation	Indicates the rate at which write operations were performed on this datafile during the last measurement period.	Writes/Sec
Buff_read_operation	Indicates the rate at which data related to this datafile were read from the buffer during the last measurement period.	Reads/Sec
Buff_write_operation	Indicates the rate at which data related to this datafile were written on the buffer during the last measurement period.	Writes/Sec
UnBuff_read_operation	Indicates the rate at which data related to this datafile was read from the disk instead of the buffer during the last measurement period.	Reads/Sec
UnBuff_write_operation	Indicates the rate at which data related to this datafile was directly written to the disk during the last measurement period.	Writes/Sec
UnBuff_read_ratio	Indicates the ratio of read operations served from the disk to the total read operations for this datafile.	Percent	A low value is desired for this measure. A sudden/gradual increase in the value of this measure implies that the read and write operations are performed on the disk.