DCS Metrics_Monitoring_User Guide (Kuala Lumpur Region)_Distributed Cache Service-Huawei Cloud

Introduction

This section describes DCS metrics reported to Cloud Eye as well as their namespaces and dimensions. You can use the Cloud Eye console or call APIs to query the DCS metrics and alarms.

**Table 1** Monitoring dimensions for different instance types
Instance Type	Instance Monitoring	Redis Server Monitoring	Proxy Monitoring
Single-node	Supported The monitoring on the instance dimension is conducted on the Redis Server.	N/A	N/A
Master/standby	Supported The master node is monitored.	Supported The master and standby nodes are monitored.	N/A
Proxy Cluster	Supported The monitoring data is the aggregated master node data.	Supported Each shard is monitored.	Supported Each proxy is monitored.
Redis Cluster	Supported The monitoring data is the aggregated master node data.	Supported Each shard is monitored.	N/A

Namespace

SYS.DCS

DCS Redis 3.0 Instance Metrics

Dimensions lists the metric dimensions.

**Table 2** DCS Redis 3.0 instance metrics
Metric ID	Metric	Description	Value Range	Conversion Rule	Monitored Object (Dimension)	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	The monitored object's maximum CPU usage among multiple sampling values in a monitoring period	0–100 Unit: %	N/A	DCS Redis instance	1 minute
memory_usage	Memory Usage	The monitored object's memory usage (the reserved memory excluded)	0–100 Unit: %	N/A	DCS Redis instance	1 minute
net_in_throughput	Network Input Throughput	Inbound throughput per second on a port	≥ 0 Unit: byte/s	1024(IEC)	DCS Redis instance	1 minute
net_out_throughput	Network Output Throughput	Outbound throughput per second on a port	≥ 0 Unit: byte/s	1024(IEC)	DCS Redis instance	1 minute
node_status	Instance Node Status	Status of instance nodes. If the status is normal, the value is 0. If the status is abnormal, the value is 1.	-	N/A	DCS Redis instance	1 minute
connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	N/A	DCS Redis instance	1 minute
client_longest_out_list	Client Longest Output List	Longest output list among current client connections	≥ 0	N/A	DCS Redis instance	1 minute
client_biggest_in_buf	Client Biggest Input Buf	Maximum input data length among current client connections	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
blocked_clients	Blocked Clients	Number of clients suspended by block operations such as BLPOP, BRPOP, and BRPOPLPUSH	≥ 0	N/A	DCS Redis instance	1 minute
used_memory	Used Memory	Number of bytes used by the Redis server	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
used_memory_rss	Used Memory RSS	Resident set size (RSS) memory that the Redis server has used, which is the memory that actually resides in the memory, including all stack and heap memory but not swapped-out memory	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
used_memory_peak	Used Memory Peak	Peak memory consumed by Redis since the Redis server last started	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
used_memory_lua	Used Memory Lua	Number of bytes used by the Lua engine	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
memory_frag_ratio	Memory Fragmentation Ratio	Current memory fragmentation, which is the ratio between used_memory_rss/used_memory.	≥ 0 Unit: %	N/A	DCS Redis instance	1 minute
total_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
total_commands_processed	Commands Processed	Number of commands processed during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	N/A	DCS Redis instance	1 minute
total_net_input_bytes	Network Input Bytes	Number of bytes received during the monitoring period	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
total_net_output_bytes	Network Output Bytes	Number of bytes sent during the monitoring period	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
instantaneous_input_kbps	Input Flow	Instantaneous input traffic	≥ 0 Unit: KiB/s	1024(IEC)	DCS Redis instance	1 minute
instantaneous_output_kbps	Output Flow	Instantaneous output traffic	≥ 0 Unit: KiB/s	1024(IEC)	DCS Redis instance	1 minute
rejected_connections	Rejected Connections	Number of connections that have exceeded maxclients and been rejected during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
keyspace_hits	Keyspace Hits	Number of successful lookups of keys in the main dictionary during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
keyspace_misses	Keyspace Misses	Number of failed lookups of keys in the main dictionary during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
pubsub_channels	PubSub Channels	Number of Pub/Sub channels	≥ 0	N/A	DCS Redis instance	1 minute
pubsub_patterns	PubSub Patterns	Number of Pub/Sub patterns	≥ 0	N/A	DCS Redis instance	1 minute
keyspace_hits_perc	Hit Rate	Ratio of the number of Redis cache hits to the number of lookups. Calculation: keyspace_hits/(keyspace_hits + keyspace_misses)	0–100 Unit: %	N/A	DCS Redis instance	1 minute
command_max_delay	Maximum Command Latency	Maximum latency of commands Unit: ms	≥ 0 ms	N/A	DCS Redis instance	1 minute
auth_errors	Authentication Failures	Number of failed authentications	≥ 0	N/A	Single-node or master/standby DCS Redis instance	1 minute
is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the instance NOTE: Slow queries caused by the MIGRATE, SLAVEOF, CONFIG, BGSAVE, and BGREWRITEAOF commands are not counted.	1: yes 0: no	N/A	Single-node or master/standby DCS Redis instance	1 minute
keys	Keys	Number of keys in Redis	≥ 0	N/A	Single-node or master/standby DCS Redis instance	1 minute

DCS Redis 4.0 and Later Instance Metrics

The monitoring data is the aggregated master node data.
Some metrics are aggregated from the master and replica nodes. For details, see "Metric Description" in Table 3.
Dimensions lists the metric dimensions.

**Table 3** DCS Redis 4.0 and later instance metrics
Metric ID	Metric	Description	Value Range	Conversion Rule	Monitored Object (Dimension)	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	The monitored object's maximum CPU usage among multiple sampling values in a monitoring period	0–100 Unit: %	N/A	Single-node or master/standby DCS Redis instance	1 minute
command_max_delay	Maximum Command Latency	Maximum latency of commands	≥ 0 Unit: ms	N/A	DCS Redis instance	1 minute
total_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the instance NOTE: Slow queries caused by the MIGRATE, SLAVEOF, CONFIG, BGSAVE, and BGREWRITEAOF commands are not counted.	1: yes 0: no	N/A	DCS Redis instance	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object	0–100 Unit: %	N/A	DCS Redis instance	1 minute
expires	Keys With an Expiration	Number of keys with an expiration in Redis	≥ 0	N/A	DCS Redis instance	1 minute
keyspace_hits_perc	Hit Rate	Ratio of the number of Redis cache hits to the number of lookups. Calculation: keyspace_hits/(keyspace_hits + keyspace_misses) Aggregated from the master and replica nodes. If no read command is performed within a monitoring period, the ratio is 0.	0–100 Unit: %	N/A	DCS Redis instance	1 minute
used_memory	Used Memory	Number of bytes used by the Redis server	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
used_memory_dataset	Used Memory Dataset	Dataset memory that the Redis server has used	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
used_memory_dataset_perc	Used Memory Dataset Ratio	Percentage of dataset memory that server has used Aggregated from the master and replica nodes.	0–100 Unit: %	N/A	DCS Redis instance	1 minute
used_memory_rss	Used Memory RSS	Resident set size (RSS) memory that the Redis server has used, which is the memory that actually resides in the memory, including all stack and heap memory but not swapped-out memory	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	N/A	DCS Redis instance	1 minute
keyspace_misses	Keyspace Misses	Number of failed lookups of keys in the main dictionary during the monitoring period Aggregated from the master and replica nodes.	≥ 0	N/A	DCS Redis instance	1 minute
keys	Keys	Number of keys in Redis	≥ 0	N/A	DCS Redis instance	1 minute
rx_controlled	Flow Control Times	Number of flow control times during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
bandwidth_usage	Bandwidth Usage	Percentage of the maximum bandwidth limit used (the average value of the sum of input and output flows)	≥ 0 Unit: %	N/A	DCS Redis instance	1 minute
connections_usage	Connection Usage	Percentage of the current number of connections to the maximum allowed number of connections	≥ 0 Unit: %	N/A	DCS Redis instance	1 minute
Instance Node Status	Instance Node Status	Status of instance nodes. If the status is normal, the value is 0. If the status is abnormal, the value is 1.	-	N/A	DCS Redis instance	1 minute
command_max_rt	Maximum Latency	Maximum delay from when the node receives commands to when it responds	≥ 0 Unit: μs	N/A	Single-node DCS Redis instance	1 minute
command_avg_rt	Average Latency	Average delay from when the node receives commands to when it responds	≥ 0 Unit: μs	N/A	Single-node DCS Redis instance	1 minute
cpu_avg_usage	Average CPU Usage	Current average usage of CPU resources	≥ 0 Unit: %	N/A	Single-node or master/standby DCS Redis instance	1 minute
blocked_clients	Blocked Clients	Number of clients suspended by block operations	≥ 0	N/A	DCS Redis instance	1 minute
connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	N/A	DCS Redis instance	1 minute
del	DEL	Number of DEL commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period Aggregated from the master and replica nodes.	≥ 0	N/A	DCS Redis instance	1 minute
expire	EXPIRE	Number of EXPIRE commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period Aggregated from the master and replica nodes.	≥ 0	N/A	DCS Redis instance	1 minute
get	GET	Number of GET commands processed per second Aggregated from the master and replica nodes.	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
hdel	HDEL	Number of HDEL commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
hget	HGET	Number of HGET commands processed per second Aggregated from the master and replica nodes.	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
hmget	HMGET	Number of HMGET commands processed per second Aggregated from the master and replica nodes.	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
hmset	HMSET	Number of HMSET commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
hset	HSET	Number of HSET commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
instantaneous_input_kbps	Input Flow	Instantaneous input traffic	≥ 0 Unit: KiB/s	1024(IEC)	DCS Redis instance	1 minute
instantaneous_output_kbps	Output Flow	Instantaneous output traffic	≥ 0 Unit: KiB/s	1024(IEC)	DCS Redis instance	1 minute
memory_frag_ratio	Memory Fragmentation Ratio	Current memory fragmentation	≥ 0	N/A	DCS Redis instance	1 minute
mget	MGET	Number of MGET commands processed per second Aggregated from the master and replica nodes.	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
mset	MSET	Number of MSET commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
pubsub_channels	PubSub Channels	Number of Pub/Sub channels	≥ 0	N/A	DCS Redis instance	1 minute
pubsub_patterns	PubSub Patterns	Number of Pub/Sub patterns	≥ 0	N/A	DCS Redis instance	1 minute
set	SET	Number of SET commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
used_memory_lua	Used Memory Lua	Number of bytes used by the Lua engine	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
used_memory_peak	Used Memory Peak	Peak memory consumed by Redis since the Redis server last started	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
sadd	SADD	Number of SADD commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
smembers	SMEMBERS	Number of SMEMBERS commands processed per second	0–500,000 Unit: count/s	N/A	DCS Redis instance	1 minute
keyspace_misses	Keyspace Misses	Number of failed lookups of keys in the main dictionary during the monitoring period	≥ 0	N/A	DCS Redis instance	1 minute
used_memory_dataset	Used Memory Dataset	Dataset memory that the Redis server has used	≥ 0 Unit: byte	1024(IEC)	DCS Redis instance	1 minute
used_memory_dataset_perc	Used Memory Dataset Ratio	Percentage of dataset memory that server has used	0–100 Unit: %	N/A	DCS Redis instance	1 minute

Redis Server Metrics of DCS Redis Instances

Available for master/standby and cluster DCS Redis instances.

Dimensions lists the metric dimensions.

**Table 4** Redis Server metrics
Metric ID	Metric	Description	Value Range	Conversion Rule	Monitored Object (Dimension)	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	The monitored object's maximum CPU usage among multiple sampling values in a monitoring period	0–100 Unit: %	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object	0–100 Unit: %	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
client_longest_out_list	Client Longest Output List	Longest output list among current client connections	≥ 0	N/A	Redis Server of a master/standby or cluster DCS Redis 4.0 or later instance	1 minute
client_biggest_in_buf	Client Biggest Input Buf	Maximum input data length among current client connections	≥ 0 Unit: byte	1024(IEC)	Redis Server of a master/standby or cluster DCS Redis 4.0 or later instance	1 minute
blocked_clients	Blocked Clients	Number of clients suspended by block operations such as BLPOP, BRPOP, and BRPOPLPUSH	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
used_memory	Used Memory	Number of bytes used by the Redis server	≥ 0 Unit: byte	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
used_memory_rss	Used Memory RSS	RSS memory that the Redis server has used, which including all stack and heap memory but not swapped-out memory	≥ 0 Unit: byte	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
used_memory_peak	Used Memory Peak	Peak memory consumed by Redis since the Redis server last started	≥ 0 Unit: byte	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
used_memory_lua	Used Memory Lua	Number of bytes used by the Lua engine	≥ 0 Unit: byte	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
memory_frag_ratio	Memory Fragmentation Ratio	Current memory fragmentation, which is the ratio between used_memory_rss/used_memory.	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
total_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
total_commands_processed	Commands Processed	Number of commands processed during the monitoring period	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
total_net_input_bytes	Network Input Bytes	Number of bytes received during the monitoring period	≥ 0 Unit: byte	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
total_net_output_bytes	Network Output Bytes	Number of bytes sent during the monitoring period	≥ 0 Unit: byte	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
instantaneous_input_kbps	Input Flow	Instantaneous input traffic	≥ 0 Unit: KiB/s	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
instantaneous_output_kbps	Output Flow	Instantaneous output traffic	≥ 0 Unit: KiB/s	1024(IEC)	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
rejected_connections	Rejected Connections	Number of connections that have exceeded maxclients and been rejected during the monitoring period	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
pubsub_channels	PubSub Channels	Number of Pub/Sub channels	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
pubsub_patterns	PubSub Patterns	Number of Pub/Sub patterns	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
keyspace_hits_perc	Hit Rate	Ratio of the number of Redis cache hits to the number of lookups. Calculation: keyspace_hits/(keyspace_hits + keyspace_misses)	0–100 Unit: %	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
command_max_delay	Maximum Command Latency	Maximum latency of commands	≥ 0 Unit: ms	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the node NOTE: Slow queries caused by the MIGRATE, SLAVEOF, CONFIG, BGSAVE, and BGREWRITEAOF commands are not counted.	1: yes 0: no	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
keys	Keys	Number of keys in Redis	≥ 0	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
sadd	SADD	Number of SADD commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
smembers	SMEMBERS	Number of SMEMBERS commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
ms_repl_offset	Replication Gap	Data synchronization gap between the master and the replica	-	N/A	Replica of a cluster DCS Redis 4.0 or 5.0 instance	1 minute
del	DEL	Number of DEL commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
expire	EXPIRE	Number of EXPIRE commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
get	GET	Number of GET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
hdel	HDEL	Number of HDEL commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
hget	HGET	Number of HGET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
hmget	HMGET	Number of HMGET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
hmset	HMSET	Number of HMSET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
hset	HSET	Number of HSET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
mget	MGET	Number of MGET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
mset	MSET	Number of MSET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
set	SET	Number of SET commands processed per second	0–500,000 Unit: count/s	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
rx_controlled	Flow Control Times	Number of flow control times during the monitoring period	≥ 0 Unit: count	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute
bandwidth_usage	Bandwidth Usage	Percentage of the used bandwidth to the maximum bandwidth limit	0–200 Unit: %	N/A	Redis Server of a cluster instance Redis Server of a master/standby DCS Redis 4.0 or later instance	1 minute

Proxy Metrics

Available for Proxy Cluster instances.
Dimensions lists the metric dimensions.

**Table 5** Proxy metrics of Proxy Cluster DCS Redis 3.0 instances
Metric ID	Metric	Description	Value Range	Conversion Rule	Monitored Object (Dimension)	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	The monitored object's maximum CPU usage among multiple sampling values in a monitoring period	0–100 Unit: %	N/A	Proxy	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object	0–100 Unit: %	N/A	Proxy	1 minute
p_connected_clients	Connected Clients	Number of connected clients	≥ 0	N/A	Proxy	1 minute
max_rxpck_per_sec	Max. NIC Data Packet Receive Rate	Maximum number of data packets received by the proxy NIC per second during the monitoring period	0–10,000,000 Unit: Packet/s	N/A	Proxy	1 minute
max_txpck_per_sec	Max. NIC Data Packet Transmit Rate	Maximum number of data packets transmitted by the proxy NIC per second during the monitoring period	0–10,000,000 Unit: Packet/s	N/A	Proxy	1 minute
max_rxkB_per_sec	Maximum Inbound Bandwidth	Largest volume of data received by the proxy NIC per second	≥ 0 Unit: KiB/s	1024(IEC)	Proxy	1 minute
max_txkB_per_sec	Maximum Outbound Bandwidth	Largest volume of data transmitted by the proxy NIC per second	≥ 0 Unit: KiB/s	1024(IEC)	Proxy	1 minute
avg_rxpck_per_sec	Average NIC Data Packet Receive Rate	Average number of data packets received by the proxy NIC per second during the monitoring period	0–10,000,000 Unit: Packet/s	N/A	Proxy	1 minute
avg_txpck_per_sec	Average NIC Data Packet Transmit Rate	Average number of data packets transmitted by the proxy NIC per second during the monitoring period	0–10,000,000 Unit: Packet/s	N/A	Proxy	1 minute
avg_rxkB_per_sec	Average Inbound Bandwidth	Average volume of data received by the proxy NIC per second	≥ 0 Unit: KiB/s	1024(IEC)	Proxy	1 minute
avg_txkB_per_sec	Average Outbound Bandwidth	Average volume of data transmitted by the proxy NIC per second	≥ 0 Unit: KiB/s	1024(IEC)	Proxy	1 minute

DCS Memcached Instance Metrics

Dimensions lists the metric dimensions.

**Table 6** DCS Memcached instance metrics
Metric ID	Metric	Description	Value Range	Conversion Rule	Monitored Object (Dimension)	Monitoring Period (Raw Data)
cpu_usage	CPU Usage	The monitored object's maximum CPU usage among multiple sampling values in a monitoring period	0–100 Unit: %	N/A	DCS Memcached instance	1 minute
memory_usage	Memory Usage	Memory consumed by the monitored object	0–100 Unit: %	N/A	DCS Memcached instance	1 minute
net_in_throughput	Network Input Throughput	Inbound throughput per second on a port	≥ 0 Unit: byte/s	1024(IEC)	DCS Memcached instance	1 minute
net_out_throughput	Network Output Throughput	Outbound throughput per second on a port	≥ 0 Unit: byte/s	1024(IEC)	DCS Memcached instance	1 minute
mc_connected_clients	Connected Clients	Number of connected clients (excluding those from slave nodes)	≥ 0	N/A	DCS Memcached instance	1 minute
mc_used_memory	Used Memory	Number of bytes used by Memcached	≥ 0 Unit: byte	1024(IEC)	DCS Memcached instance	1 minute
mc_used_memory_rss	Used Memory RSS	RSS memory used is the memory that actually resides in the memory, including all stack and heap memory but not swapped-out memory	≥ 0 Unit: byte	1024(IEC)	DCS Memcached instance	1 minute
mc_used_memory_peak	Used Memory Peak	Peak memory consumed since the server last started	≥ 0 Unit: byte	1024(IEC)	DCS Memcached instance	1 minute
mc_memory_frag_ratio	Memory Fragmentation Ratio	Current memory fragmentation, which is the ratio between used_memory_rss/used_memory.	≥ 0	N/A	DCS Memcached instance	1 minute
mc_connections_received	New Connections	Number of connections received during the monitoring period	≥ 0	N/A	DCS Memcached instance	1 minute
mc_commands_processed	Commands Processed	Number of commands processed during the monitoring period	≥ 0	N/A	DCS Memcached instance	1 minute
mc_instantaneous_ops	Ops per Second	Number of commands processed per second	≥ 0	N/A	DCS Memcached instance	1 minute
mc_net_input_bytes	Network Input Bytes	Number of bytes received during the monitoring period	≥ 0 Unit: byte	1024(IEC)	DCS Memcached instance	1 minute
mc_net_output_bytes	Network Output Bytes	Number of bytes sent during the monitoring period	≥ 0 Unit: byte	1024(IEC)	DCS Memcached instance	1 minute
mc_instantaneous_input_kbps	Input Flow	Instantaneous input traffic	≥ 0 Unit: KiB/s	1024(IEC)	DCS Memcached instance	1 minute
mc_instantaneous_output_kbps	Output Flow	Instantaneous output traffic	≥ 0 Unit: KiB/s	1024(IEC)	DCS Memcached instance	1 minute
mc_rejected_connections	Rejected Connections	Number of connections that have exceeded maxclients and been rejected during the monitoring period	≥ 0	N/A	DCS Memcached instance	1 minute
mc_expired_keys	Expired Keys	Number of keys that have expired and been deleted during the monitoring period	≥ 0	N/A	DCS Memcached instance	1 minute
mc_evicted_keys	Evicted Keys	Number of keys that have been evicted and deleted during the monitoring period	≥ 0	N/A	DCS Memcached instance	1 minute
mc_cmd_get	Number of Retrieval Requests	Number of received data retrieval requests	≥ 0	N/A	DCS Memcached instance	1 minute
mc_cmd_set	Number of Storage Requests	Number of received data storage requests	≥ 0	N/A	DCS Memcached instance	1 minute
mc_cmd_flush	Number of Flush Requests	Number of received data clearance requests	≥ 0	N/A	DCS Memcached instance	1 minute
mc_cmd_touch	Number of Touch Requests	Number of received requests for modifying the validity period of data	≥ 0	N/A	DCS Memcached instance	1 minute
mc_get_hits	Number of Retrieval Hits	Number of successful data retrieval operations	≥ 0	N/A	DCS Memcached instance	1 minute
mc_get_misses	Number of Retrieval Misses	Number of failed data retrieval operations due to key nonexistence	≥ 0	N/A	DCS Memcached instance	1 minute
mc_delete_hits	Number of Delete Hits	Number of successful data deletion operations	≥ 0	N/A	DCS Memcached instance	1 minute
mc_delete_misses	Number of Delete Misses	Number of failed data deletion operations due to key nonexistence	≥ 0	N/A	DCS Memcached instance	1 minute
mc_incr_hits	Number of Increment Hits	Number of successful increment operations	≥ 0	N/A	DCS Memcached instance	1 minute
mc_incr_misses	Number of Increment Misses	Number of failed increment operations due to key nonexistence	≥ 0	N/A	DCS Memcached instance	1 minute
mc_decr_hits	Number of Decrement Hits	Number of successful decrement operations	≥ 0	N/A	DCS Memcached instance	1 minute
mc_decr_misses	Number of Decrement Misses	Number of failed decrement operations due to key nonexistence	≥ 0	N/A	DCS Memcached instance	1 minute
mc_cas_hits	Number of CAS Hits	Number of successful CAS operations	≥ 0	N/A	DCS Memcached instance	1 minute
mc_cas_misses	Number of CAS Misses	Number of failed CAS operations due to key nonexistence	≥ 0	N/A	DCS Memcached instance	1 minute
mc_cas_badval	Number of CAS Values Not Matched	Number of failed CAS operations due to CAS value mismatch	≥ 0	N/A	DCS Memcached instance	1 minute
mc_touch_hits	Number of Touch Hits	Number of successful requests for modifying the validity period of data	≥ 0	N/A	DCS Memcached instance	1 minute
mc_touch_misses	Number of Touch Misses	Number of failed requests for modifying the validity period of data due to key nonexistence	≥ 0	N/A	DCS Memcached instance	1 minute
mc_auth_cmds	Authentication Requests	Number of authentication requests	≥ 0	N/A	DCS Memcached instance	1 minute
mc_auth_errors	Authentication Failures	Number of failed authentication requests	≥ 0	N/A	DCS Memcached instance	1 minute
mc_curr_items	Number of Items Stored	Number of stored data items	≥ 0	N/A	DCS Memcached instance	1 minute
mc_command_max_delay	Maximum Command Latency	Maximum latency of commands	≥ 0 Unit: ms	N/A	DCS Memcached instance	1 minute
mc_is_slow_log_exist	Slow Query Logs	Existence of slow query logs in the instance	1: yes 0: no	N/A	DCS Memcached instance	1 minute
mc_keyspace_hits_perc	Hit Rate	Ratio of the number of Memcached cache hits to the number of lookups	0–100 Unit: %	N/A	DCS Memcached instance	1 minute

Dimensions

Key	Value
dcs_instance_id	DCS Redis instance
dcs_cluster_redis_node	Redis Server
dcs_cluster_proxy_node	Proxies (Redis 3.0)
dcs_memcached_instance_id	DCS Memcached instance

DCS Metrics