qos_volume

02/11/2024 Contributors

The workload_volume table provides workload statistics on a per volume basis. Workload information at a file or LUN level are not shown by this table (See the workload table). This table provides information such as operations per second, a breakdown of where read operations are going, the interarrival time of operation request messages, working set size information, operation latency per workload, and deferred workload information.

Classic Object: workload_volume

Table Row IDs

ID Format	Aggregation Type	Comment
{instance_name}:{instance_uuid}	(not applicable)	This represents the construction of the row ID field, which is a single unique string that identifies a row.
{node.name}:{instance_name}:{instance_uuid}	constituent	This represents the construction of a row ID field for a row from a single node.

ID Format

Aggregation Type

Comment

{instance_name}:{instance_uuid}

(not applicable)

This represents the construction of the row ID field, which is a single unique string that identifies a row.

{node.name}:{instance_name}:{instance_uuid}

constituent

This represents the construction of a row ID field for a row from a single node.

Properties

This section describes the mapping between classic (ONTAPI) string counter names and REST property names.

Classic String Counter	REST Property	Description
node_name	node.name	System node name
instance_name	name	This is the name of the constituent workload row.
instance_uuid	uuid	This is the unique identifier for the qos_volume row. While the qos_volume name may change, the UUID will not change.

Classic String Counter

REST Property

Description

node_name

node.name

System node name

instance_name

name

This is the name of the constituent workload row.

instance_uuid

uuid

This is the unique identifier for the qos_volume row. While the qos_volume name
may change, the UUID will not change.

Counters

This section describes the mapping between classic (ONTAPI) numeric counter names and REST counter names.

Classic Numeric Counter	REST Counter	Description
latency	latency	This is the average response time for requests that were initiated by the workload.
ops	ops	This field is the workload's rate of operations that completed during the measurement interval; measured per second.
read_data	read_data	This is the amount of data read per second from the filer by the workload.
read_io_type	read_io_type_percent	This is the percentage of read requests served from various components (such as buffer cache, ext_cache, disk, etc.).
read_io_type_base	read_io_type_base	This is the total number of WAFL read requests. It is used as a base counter (or denominator) for the read_io_types counter, to compute the percentage of reads by various WAFL components.
read_latency	read_latency	This is the average response time for read requests that were initiated by the workload.
read_ops	read_ops	This is the rate of this workload's read operations that completed during the measurement interval.
sequential_reads	sequential_reads_percent	This is the percentage of reads, performed on behalf of the workload, that were sequential.
sequential_reads_base	sequential_reads_base	This is the total number of reads, performed on behalf of the workload. It is used as a base counter (or denominator) for the sequential_reads_percent counter to compute the percentage of sequential reads.
sequential_writes_percent	sequential_writes_percent	This is the percentage of writes, performed on behalf of the workload, that were sequential. This counter is only available on platforms with more than 4GB of NVRAM.
sequential_writes_base	sequential_writes_base	This is the total number of writes, performed on behalf of the workload. This is used as a base counter (or denominator) for the sequential_writes_percent counter to compute the percentage of sequential writes.
total_data	total_data	This is the total amount of data read/written per second from/to the filer by the workload.
write_data	write_data	This is the amount of data written per second to the filer by the workload.
write_latency	write_latency	This is the average response time for write requests that were initiated by the workload.
write_ops	write_ops	This is the workload's write operations that completed during the measurement interval; measured per second.
concurrency	concurrency	This is the average number of concurrent requests for the workload.

Classic Numeric Counter

REST Counter

Description

latency

This is the average response time for requests that were initiated by the
workload.

ops

This field is the workload's rate of operations that completed during the
measurement interval; measured per second.

read_data

This is the amount of data read per second from the filer by the workload.

read_io_type

read_io_type_percent

This is the percentage of read requests served from various components (such as
buffer cache, ext_cache, disk, etc.).

read_io_type_base

This is the total number of WAFL read requests. It is used as a base counter (or
denominator) for the read_io_types counter, to compute the percentage of reads
by various WAFL components.

read_latency

This is the average response time for read requests that were initiated by the
workload.

read_ops

This is the rate of this workload's read operations that completed during the
measurement interval.

sequential_reads

sequential_reads_percent

This is the percentage of reads, performed on behalf of the workload, that were
sequential.

sequential_reads_base

This is the total number of reads, performed on behalf of the workload. It is
used as a base counter (or denominator) for the sequential_reads_percent counter
to compute the percentage of sequential reads.

sequential_writes_percent

This is the percentage of writes, performed on behalf of the workload, that were
sequential. This counter is only available on platforms with more than 4GB of
NVRAM.

sequential_writes_base

This is the total number of writes, performed on behalf of the workload. This is
used as a base counter (or denominator) for the sequential_writes_percent
counter to compute the percentage of sequential writes.

total_data

This is the total amount of data read/written per second from/to the filer by
the workload.

write_data

This is the amount of data written per second to the filer by the workload.

write_latency

This is the average response time for write requests that were initiated by the
workload.

write_ops

This is the workload's write operations that completed during the measurement
interval; measured per second.

concurrency

This is the average number of concurrent requests for the workload.

Property/Counter Content Changes

This section describes any output value differences between the classic (ONTAPI) string counter and the respective REST property. It also describes array label name changes between classic array counters and respective REST array counters.

Table Aliases

This section describes aliases for aggregated tables.