OVNPM 1.5.2 - Performance Agent for NonStop Server Monitoring Guide

Appendix A 71
Metric
Description
Read (KBytes)
Number of KBytes read from the disk.
ReadBusy (% x100)
Time in percentage spent reading from the disk.
Reads (nbs x100)
Number of read operations performed by the disk process, in number per second with a
scale equal to 100.
Reqst (nbs x100)
Number of I/O requests (read, write, FILEINFO) received by the disk process.
ReqstQLenMx (nb)
Maximum number of items on the Request queue.
ReqstQTime (%) Percentage of time in microseconds that requests spent on the disk process internal
queue.
RqBkd (nbs x100)
Number of times an operation had to wait because the requested file or record was
already locked.
Seek (nbs x100)
Number of seek operations performed by the disk process, in number per second with a
scale equal to 100.
SeekBusy (% x100)
Time in percentage that the disk controller spent executing SEEK.
Swaps (nbs x100)
Number of swap operation performed for the memory manager
VolSmQlMax (nb)
Maximum number of requests on the volume semaphore queue.
VolSmQTime (%) Time in percentage the requests spent waiting for the volume semaphore.
Write (KBytes)
Number of KBytes written to the disk.
Write (nbs x100) Number of write operations performed by the disk process, in number per second with
a scale equal to 100.
WriteBusy (% x100)
Time in percentage spent writing to the disk.
Metrics for each path and cache size.
Metric
Description
AudBF (nbs x100)
Number of times that the disk process had to write to the audit trail volume before it
could write a dirty cache block and thereby free that block for another use.
BlDrtMax (nb)
Maximum number of items on the blocks dirty queue.
BlDrtQTime (s)
Time in seconds that cache blocks spent being dirty.
Blks (nb)
Number of cache blocks allocated by SYSGEN or PUP.
BlSpl (nbs x100)
Number of block splits for the volume.
Fault (nbs x100)
Number of times the cache tables indicate that a required block is in cache, but it is not
because the memory manager is using it for another purpose.
Hits (nbs x100)
Number of times a required block is found in cache on a read or buffered write
operation saving a disk I/O
Misse (nbs x100)
Number of times a required block is not found in cache on a read operation, which
causes a disk I/O
WrCln (nbs x100)
Number of times a required block is found clean in cache for a write operation.
WrDrt (nbs x100)
Number of times a required block is found dirty in cache for a write operation.
WrMis (nbs x100)
Number of times a required block is not found in cache for a write operation.
Metrics for each active file on the disk.
Metric
Description
BlkSpl (nbs x100)
Number of block splits during writes to the file.
Code
The file code of the active file
EndingEof (Kbytes) EOF value of the file in bytes at measurement stops time.
ExtAll (nbs x100)
Number of times a file extent is allocated.
Appendix A