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HP NonStop Shadowbase Command Definitions

Queue Manager Command Descriptions

HP NonStop Shadowbase Command Reference Manual—785421-002

307

10. QUEUE SUMMARY / SAFESTORE QUEUE I/O INFO: This sub-section

contains statistics accumulated over the measure period for I/Os

performed against the queue files. The time for an operation is calculated

from when the operation is initiated until it completes with in a call to

AWAITIOX. The columns for this section are:

 OPERATION: identifies what is being timed in the row:

o WRITE – writes to the queue file.

o WRITEUPDATE – write-updates to the queue file.

o WRITE TOTAL – the total for WRITE and WRITEUPDATE

operations.

o CACHE FLUSH –Statistics for SETMODE 95 calls to flush cache. If

the write-thru cache is used, this will be 0. These calls are made

when the restart file is written.

o EOF UPDATE – Statistics for CONTROL 2 operations to cause the

EOF to be written to disk for the queue file. These calls are

made when the restart file is written.

o PURGEDATA – Statistics for CONTROL 20 operations to purge data

from the queue file. Called when the file is being prepared for

use.

o RENAME – Statistics for FILE_RENAME_ calls to rename the file.

Called as part of the process to prepare the file for use.

o OTHER – Statistics for miscellaneous SETMODE operations called

to prepare the file for use, include setting the buffered option,

setting security, and allocating / deallocating space.

o Q WRITE TOTAL – The total of all operations for writing to the

queue.

o OPEN – Statistics for opening the queue files for reading.

o READ – Statistics for reading from the queue files.

o CLOSE – Statistics for closing the files after reading.

o Q READ TOTAL – The total of operations for reading from the

queue – the sum of the OPEN, READ, CLOSE lines.

 DURATION: The total time in seconds for the measurement period the

specified operation(s) took, measured from when the operation was

initiated until it completed.

 COUNT: The number of operations done during the measurement period.

 BYTES: The number of bytes transferred over the measurement period

for the operation.

 OPS/SEC: The number of operations per second – COUNT / DURATION.

 BYTES/SEC: The number of bytes transferred per second – BYTES /

DURATION.

11. QUEUE SUMMARY / BLOCKED FOR FLUSH: This line shows the time

the Queue Manager was blocked during a SETMODE 95 call to flush

buffered data to disk. SETMODE 95, if when done nowaited, blocks until

the data is flushed to disk. During this time, the Queue Manager cannot do

any other processing. Note: the CACHE FLUSH line measures the time

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HP Integrity NonStop H-Series Guía de usuario Pagina 316

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