HP VMA-series Memory Arrays - Manual (Page 216)

216 AM456-9007B Rev 02 HP VMA SAN Gateway Installation and User Guide
IRQ calls for errors The total of DMA errors returned as well as
PCIe link loss errors.
Completed I/O bytes The total bytes read/written from/to a HP
VMA Array.
Completed read bytes The total bytes read from the HP VMA Array.
Completed write bytes The total bytes written to a HP VMA Array.
Completed I/O's The total I/O read / write requests from and to
HP VMA Array. This is not the individual
DMA descriptors completed, but for each of
the user requested I/Os.
Completed read I/O's The total I/O read requests from a HP VMA
Array. This is not the individual DMA
descriptors completed, but for each of the user
requested I/Os.
Completed write I/O's The total I/O write requests to a HP VMA
Array. This is not the individual DMA
descriptors completed, but for each of the user
requested I/Os.
Failed read I/O's The total failed I/O read requests from a HP
VMA Array. This is not the individual DMA
descriptors failed, but for each of the user
requested I/Os.
Failed write I/O's The total failed I/O write requests to a HP
VMA Array. This is not the individual DMA
descriptors failed, but for each of the user
requested I/Os.
Average read bytes The rough average of read I/O request sizes.
Average write bytes The rough average of write I/O request sizes.
Unaligned host buf
reads The total I/O read requests from a HP VMA
Array, but only incremented when an
unaligned host address required special buffer
byte copying to service the DMA request.
Unaligned host buf
writes The total I/O write requests to a HP VMA
Array, but only incremented when an
unaligned host address required special buffer
byte copying to service the DMA request.
Requested DMA reads Incremented for each read DMA descriptor
added to the descriptor ring.
A single I/O may result in multiple DMA
descriptors to complete a single I/O request.