мониторинг блочного устройства ввода / вывода на основе данных blktrace (monitor block device I/O based o blktrace data)
Имя (Name)
blkiomon - monitor block device I/O based o blktrace data
Синопсис (Synopsis)
blkiomon -I interval [ -h file ] [ -b file ] [ -d file ] [ -D
file ] [ -Q path_name -q msg_queue_id -m msg_id ] [ -V ]
Описание (Description)
blkiomon is a block device I/O monitor. It periodically generates
per-device request size and request latency statistics from
blktrace data. It provides histograms as well as data that can be
used to calculate min, max, average and variance. For this
purpose, it consumes D and C traces read from stdin. Note, that
this doesn't work for logical volumes, as high-level drivers
don't see the completion of the events (C).
There are options for binary output and human-readable output to
files and stdout. Output to a message queue is supported as well.
There is no need to use blkparse with blkiomon. blkiomon is
capable of consuming binary output written to stdout by blktrace.
Параметры (Options)
-I interval
--interval=interval
Set sample interval
-h file
--human-readable=file
Human-readable output file. Use '-' for stdout.
-b file
--binary=file
Binary output file. Use '-' for stdout.
-d file
--dump-lldd=file
Output file for data emitted by low level device driver.
-D file
--debug=file
Output file for debugging data. Use '-' for stdout.
-Q path_name
--msg-queue=path_name
Sets path_name as path name for existing message queue to
be used for binary output.
-q msg_queue_id
--msg-queue-id=msg_queue_id
Sets msg_queue_id as ID for an existing message queue to
be used for binary output.
-m msg_id
--msg-id=msg_id
Sets msg_id as message identifier to be used for binary
output messages written to an existing message queue.
-V
--version
Print program version.
Примеры (Examples)
To get I/O statistics for /dev/sdw every 10 seconds for a period
of one hour, use the following command:
% blktrace /dev/sdw -a issue -a complete -w 3600 -o - |
blkiomon -I 10 -h -
