MONITOR IO
IO is a class of statistics collected by the MONITOR utility. It includes the following data items:
- Direct I/O Rate: rate of direct I/O (for example, disk and tape) operations
- Buffered I/O Rate: rate of buffered I/O (for example, terminal and line printer) operations
- Mailbox Write Rate: rate of write-to-mailbox requests received by the system
- Split Transfer Rate: rate at which transfers were split into multiple I/Os
- Log Name Translation Rate: rate of logical name translations
- File Open Rate: rate at which files were opened
- Page Fault Rate: rate of occurrence of page faults for all working sets
- Page Read Rate: rate of pages read from disk as a result of page faults
- Page Read I/O Rate: rate of read I/O operations from disk as a result of page faults
- Page Write Rate: rate of pages written to the page file
- Page Write I/O Rate: rate of write I/O operations to the page file
- Inswap Rate: rate at which working sets were read into memory from the swap file
- Free List Size: number of pages on the free page list
- Modified List Size: number of pages on the modified page list
