First, the introduction of Metrics

  1. Based on netflix spectator
  2. Foundation-metrics loads all MetricsInitializer implementations via the SPI mechanism. Implementers can use the getOrder in the MetricsInitializer to plan the execution order. The smaller the order number, the earlier it will be executed.
  3. Metrics-core implements 3 types of MetricsInitializer:
    1. DefaultRegistryInitializer: Instantiate and register spectator-reg-servo, set a smaller order, and ensure that it is executed before the following two types of MetricsInitializer
    2. Meters Initializer: Statistics of data such as TPS, delay, thread pool, jvm resources, etc.
    3. Publisher: Output statistics, built-in log output, and output via RESTful interface
    4. Metrics-prometheus provides the ability to interface with prometheus

Second, how to use.

1.Maven dependence.

<dependency>
  <groupId>org.apache.servicecomb</groupId>
  <artifactId>metrics-core</artifactId>
</dependency>

If integrate with prometheus, also need to add dependencies.

<dependency>
  <groupId>org.apache.servicecomb</groupId>
  <artifactId>metrics-prometheus</artifactId>
</dependency>

Note: Please change the version field to the actual version number; if the version number has been declared in the dependencyManagement, then you do not have to write the version number here

2. Configuration instructions

Configuration Item Default Meaning
servicecomb.metrics.window_time 60000 Statistical period, in milliseconds
TPS, delay, etc. Periodic data, updated once per cycle, the value obtained in the cycle, actually the value of the previous cycle
servicecomb.metrics
.invocation.latencyDistribution		 The latency distribution time period definition in milliseconds
for example:0,1,10,100,1000
indicates that the following latency scopes are defined: [0, 1),[1, 10),[10, 100),[100, 1000),[1000, )
servicecomb.metrics
.Consumer.invocation.slow.enabled		 false Whether to enable slow call detection on the Consumer side
Level 4 priority definitions can be supported by adding the suffix .${service}.${schema}.${operation}
servicecomb.metrics
.Consumer.invocation.slow.msTime		 1000 If the latency exceeds the configured value, the log will be output immediately, and the time consumption information of the stage called this time will be recorded.
Level 4 priority definitions can be supported by adding the suffix .${service}.${schema}.${operation}
servicecomb.metrics
.Provider.invocation.slow.enabled		 false Whether to enable slow call detection on the Provider side
Level 4 priority definitions can be supported by adding the suffix .${service}.${schema}.${operation}
servicecomb.metrics
.Provider.invocation.slow.msTime		 1000 If the latency exceeds the configured value, the log will be output immediately, and the time consumption information of the stage called this time will be recorded.
Level 4 priority definitions can be supported by adding the suffix .${service}.${schema}.${operation}
servicecomb.metrics
.prometheus.address		 0.0.0.0:9696 prometheus listen address
servicecomb.metrics.publisher.defaultLog
.enabled		 false Whether to output the default statistics log
servicecomb.metrics.publisher.defaultLog
.endpoints.client.detail.enabled		 false Whether to output each client endpoint statistics log, because it is related to the target ip:port number, there may be a lot of data, so the default is not output

3. Slow call detection

After slow call detection is enabled, if there is a slow call, the corresponding log will be output immediately:

2019-04-02 23:01:09,103[WARN][pool-7-thread-74][5ca37935c00ff2c7-350076] - slow(40 ms) invocation, CONSUMER highway perf1.impl.syncQuery
  http method: GET
  url        : /v1/syncQuery/{id}/
  server     : highway://192.168.0.152:7070?login=true
  status code: 200
  total      : 50.760 ms
    prepare                : 0.0 ms
    handlers request       : 0.0 ms
    client filters request : 0.0 ms
    send request           : 0.5 ms
    get connection         : 0.0 ms
    write to buf           : 0.5 ms
    wait response          : 50.727 ms
    wake consumer          : 0.23 ms
    client filters response: 0.2 ms
    handlers response      : 0.0 ms (SlowInvocationLogger.java:121)

Where 5ca37935c00ff2c7-350076 is the structure of ${traceId}-${invocationId}, referenced by %marker in the output format of log4j2 or logback

4. Access via RESTful

As long as the microservices open the rest port, use a browser to access http://ip:port/metrics. will get json data in the following format:

{
  "servicecomb.vertx.endpoints(address=192.168.0.124:7070,statistic=connectCount,type=client)": 0.0,
  "servicecomb.vertx.endpoints(address=192.168.0.124:7070,statistic=disconnectCount,type=client)": 0.0,
  "servicecomb.vertx.endpoints(address=192.168.0.124:7070,statistic=connections,type=client)": 1.0,
  "servicecomb.vertx.endpoints(address=192.168.0.124:7070,statistic=bytesRead,type=client)": 508011.0,
  "servicecomb.vertx.endpoints(address=192.168.0.124:7070,statistic=bytesWritten,type=client)": 542163.0,
  "servicecomb.vertx.endpoints(address=192.168.0.124:7070,statistic=queueCount,type=client)": 0.0,

  "servicecomb.vertx.endpoints(address=0.0.0.0:7070,statistic=connectCount,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=0.0.0.0:7070,statistic=disconnectCount,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=0.0.0.0:7070,statistic=connections,type=server)": 1.0,
  "servicecomb.vertx.endpoints(address=0.0.0.0:7070,statistic=bytesRead,type=server)": 542163.0,
  "servicecomb.vertx.endpoints(address=0.0.0.0:7070,statistic=bytesWritten,type=server)": 508011.0,
  "servicecomb.vertx.endpoints(address=0.0.0.0:7070,statistic=rejectByConnectionLimit,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=localhost:8080,statistic=connectCount,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=localhost:8080,statistic=disconnectCount,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=localhost:8080,statistic=connections,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=localhost:8080,statistic=bytesRead,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=localhost:8080,statistic=bytesWritten,type=server)": 0.0,
  "servicecomb.vertx.endpoints(address=localhost:8080,statistic=rejectByConnectionLimit,type=server)": 0.0,

  "threadpool.completedTaskCount(id=cse.executor.groupThreadPool-group0)": 4320.0,
  "threadpool.rejectedCount(id=cse.executor.groupThreadPool-group0)": 0.0,
  "threadpool.taskCount(id=cse.executor.groupThreadPool-group0)": 4320.0,
  "threadpool.currentThreadsBusy(id=cse.executor.groupThreadPool-group0)": 0.0,
  "threadpool.poolSize(id=cse.executor.groupThreadPool-group0)": 4.0,
  "threadpool.maxThreads(id=cse.executor.groupThreadPool-group0)": 10.0,
  "threadpool.queueSize(id=cse.executor.groupThreadPool-group0)": 0.0,
  "threadpool.corePoolSize(id=cse.executor.groupThreadPool-group0)": 4.0,

  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,scope=[0,1),status=200,transport=highway,type=latencyDistribution)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,scope=[1,3),status=200,transport=highway,type=latencyDistribution)": 0.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,scope=[3,10),status=200,transport=highway,type=latencyDistribution)": 0.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,scope=[10,100),status=200,transport=highway,type=latencyDistribution)": 0.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,scope=[100,),status=200,transport=highway,type=latencyDistribution)": 0.0,

  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,scope=[0,1),status=200,transport=highway,type=latencyDistribution)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,scope=[1,3),status=200,transport=highway,type=latencyDistribution)": 0.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,scope=[3,10),status=200,transport=highway,type=latencyDistribution)": 0.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,scope=[10,100),status=200,transport=highway,type=latencyDistribution)": 0.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,scope=[100,),status=200,transport=highway,type=latencyDistribution)": 0.0,

  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=total,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=total,statistic=totalTime,status=200,transport=highway,type=stage)": 0.25269420000000004,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=total,statistic=max,status=200,transport=highway,type=stage)": 2.7110000000000003E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=handlers_request,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=handlers_request,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0079627,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=handlers_request,statistic=max,status=200,transport=highway,type=stage)": 1.74E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=handlers_response,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=handlers_response,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0060666,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=handlers_response,statistic=max,status=200,transport=highway,type=stage)": 1.08E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=prepare,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=prepare,statistic=totalTime,status=200,transport=highway,type=stage)": 0.016679600000000003,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=prepare,statistic=max,status=200,transport=highway,type=stage)": 2.68E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=queue,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=queue,statistic=totalTime,status=200,transport=highway,type=stage)": 0.08155480000000001,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=queue,statistic=max,status=200,transport=highway,type=stage)": 2.1470000000000001E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=execution,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=execution,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0098285,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=execution,statistic=max,status=200,transport=highway,type=stage)": 4.3100000000000004E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=server_filters_request,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=server_filters_request,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0170669,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=server_filters_request,statistic=max,status=200,transport=highway,type=stage)": 3.6400000000000004E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=server_filters_response,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=server_filters_response,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0196985,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=server_filters_response,statistic=max,status=200,transport=highway,type=stage)": 4.8100000000000004E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=producer_send_response,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=producer_send_response,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0880885,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=PRODUCER,stage=producer_send_response,statistic=max,status=200,transport=highway,type=stage)": 1.049E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=total,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=total,statistic=totalTime,status=200,transport=highway,type=stage)": 0.9796976000000001,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=total,statistic=max,status=200,transport=highway,type=stage)": 6.720000000000001E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=handlers_request,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=handlers_request,statistic=totalTime,status=200,transport=highway,type=stage)": 0.012601500000000002,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=handlers_request,statistic=max,status=200,transport=highway,type=stage)": 3.5000000000000004E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=handlers_response,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=handlers_response,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0066785,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=handlers_response,statistic=max,status=200,transport=highway,type=stage)": 3.21E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=prepare,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=prepare,statistic=totalTime,status=200,transport=highway,type=stage)": 0.010363800000000001,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=prepare,statistic=max,status=200,transport=highway,type=stage)": 2.85E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=client_filters_request,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=client_filters_request,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0060282,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=client_filters_request,statistic=max,status=200,transport=highway,type=stage)": 9.2E-6,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_send_request,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_send_request,statistic=totalTime,status=200,transport=highway,type=stage)": 0.099984,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_send_request,statistic=max,status=200,transport=highway,type=stage)": 1.1740000000000001E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_get_connection,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_get_connection,statistic=totalTime,status=200,transport=highway,type=stage)": 0.006916800000000001,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_get_connection,statistic=max,status=200,transport=highway,type=stage)": 5.83E-5,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_write_to_buf,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_write_to_buf,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0930672,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_write_to_buf,statistic=max,status=200,transport=highway,type=stage)": 1.1580000000000001E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_wait_response,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_wait_response,statistic=totalTime,status=200,transport=highway,type=stage)": 0.7654931,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_wait_response,statistic=max,status=200,transport=highway,type=stage)": 5.547E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_wake_consumer,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_wake_consumer,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0502085,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=consumer_wake_consumer,statistic=max,status=200,transport=highway,type=stage)": 3.7370000000000003E-4,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=client_filters_response,statistic=count,status=200,transport=highway,type=stage)": 4269.0,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=client_filters_response,statistic=totalTime,status=200,transport=highway,type=stage)": 0.0227188,
  "servicecomb.invocation(operation=perf1.impl.syncQuery,role=CONSUMER,stage=client_filters_response,statistic=max,status=200,transport=highway,type=stage)": 4.0E-5
}

Third, the summary of statistical items

1. CPU

Name Tag keys Tag values Description
os type cpu System CPU usage in the current period, Solaris mode
processCpu Microservice process CPU usage in the current period, IRIX mode
processCpu divided by cpu is equal to the number of system CPUs

2. NET

Name Tag keys Tag values Description
os type net
statistic send Average number of bytes sent per second during the current period (Bps)
receive Average number of bytes received per second during the current period (Bps)
sendPackets Average number of packets sent per second (pps) during the current period
receivePackets Average number of packets received per second (pps) during the current period
interface net dev name

3. vertx client endpoints

Name Tag keys Tag values Description
servicecomb
.vertx
.endpoints		 type client
address ${ip}:${port} server ip:port
statistic connectCount Number of connections have been initiated in the current period
disconnectCount Number of disconnections in the current period
queueCount The number of requests in the http connection pool that are waiting to get a connection
connections Current connection number
bytesRead Average number of bytes sent per second during the current period (Bps)
Business layer statistics, relative to the data obtained from the network card, the data here does not include the size of the header
For http messages, does not include http header size
bytesWritten Average number of bytes received per second during the current period (Bps)
Business layer statistics, relative to the data obtained from the network card, the data here does not include the size of the header
For http messages, does not include http header size

4. vertx server endpoints

Name Tag keys Tag values Description
servicecomb
.vertx
.endpoints		 type server
address ${ip}:${port} listen ip:port
statistic connectCount Number of connections are connected in the current period
disconnectCount Number of disconnections in the current period
rejectByConnectionLimit Number of active disconnections due to exceeding the number of connections in the current period
connections Current connection number
bytesRead Average number of bytes sent per second during the current period (Bps)
Business layer statistics, relative to the data obtained from the network card, the data here does not include the size of the header
For http messages, does not include http header size
bytesWritten Average number of bytes received per second during the current period (Bps)
Business layer statistics, relative to the data obtained from the network card, the data here does not include the size of the header
For http messages, does not include http header size

5. Invocation latency distribution

Name Tag keys Tag values Description
servicecomb
.invocation		 role CONSUMER、PRODUCER、EDGE Is the CONSUMER, PRODUCER or EDGE side statistics
operation ${microserviceName}
.${schemaId}
.${operationName}		 Method name called
transport highway or rest On which transmission channel the call is made
status http status code
type latencyDistribution invocation latency distribution
scope [${min}, ${max}) The call count in the current period that latency is greater than or equal to min, less than max
[${min},) means max is infinite

6. invocation consumer stage latency

Name Tag keys Tag values Description
servicecomb
.invocation		 role CONSUMER Statistics on the CONSUMER side
operation ${microserviceName}
.${schemaId}
.${operationName}		 Method name called
transport highway or rest On which transmission channel the call is made
status http status code
type stage stage latency
stage total The whole process
prepare
handlers_request Handler chain request process
client_filters_request Http client filter chain request process
Only the rest transport has this stage.
consumer_send_request Send request stage, including consumer_get_connection and consumer_write_to_buf
consumer_get_connection Get a connection from the connection pool
consumer_write_to_buf Write data to the network buffer
consumer_wait_response Waiting for the server to answer
consumer_wake_consumer In the synchronization process, after receiving the response, it takes time from waking up the waiting thread to waiting for the thread to start processing the response.
client_filters_response Http client filter chain response process
handlers_response Handler chain response process
statistic count Average number of calls per second (TPS)
Count=Number of calls/period in the statistical period (seconds)
totalTime In seconds
totalTime=The total duration of the call in the current period (seconds)
AverageTime divided by count to get the average latency
max In seconds
Maximum latency in the current period

7. invocation producer stage latency

Name Tag keys Tag values Description
servicecomb
.invocation		 role PRODUCER Statistics on the PRODUCER side
operation ${microserviceName}
.${schemaId}
.${operationName}		 Method name called
transport highway or rest On which transmission channel the call is made
status http status code
type stage stage latency
stage total The whole process
prepare
queue Meaning only when using a thread pool
Indicates the length of time the call is queued in the thread pool
server_filters_request Http server filter chain request process
Only the rest transport has this stage.
handlers_request Handler chain request process
execution Business method
handlers_response Handler chain response process
server_filters_response Http server filter chain response process
producer_send_response Send a response
statistic count Average number of calls per second (TPS)
Count=Number of calls/period in the statistical period (seconds)
totalTime In seconds
totalTime=The total duration of the call in the current period (seconds)
AverageTime divided by count to get the average latency
max In seconds
Maximum latency in the current period

8. invocation edge stage latency

Name Tag keys Tag values Description
servicecomb
.invocation		 role EDGE EDGE statistics
operation ${microserviceName}
.${schemaId}
.${operationName}		 Method name called
transport highway or rest On which transmission channel the call is made
status http status code
type stage stage latency
stage total The whole process
prepare
queue Meaning only when using a thread pool
Indicates the length of time the call is queued in the thread pool
server_filters_request Http server filter chain request process
handlers_request Handler chain request process
client_filters_request Http client filter chain request process
consumer_send_request Send request stage, including consumer_get_connection and consumer_write_to_buf
consumer_get_connection Get a connection from the connection pool
consumer_write_to_buf Write data to the network buffer
consumer_wait_response Waiting for the server to answer
consumer_wake_consumer In the synchronization process, after receiving the response, it takes time from waking up the waiting thread to waiting for the thread to start processing the response.
client_filters_response Http client filter chain response process
handlers_response Handler chain response process
server_filters_response Http server filter chain response process
producer_send_response Send a response
statistic count Average number of calls per second (TPS)
Count=Number of calls/period in the statistical period (seconds)
totalTime In seconds
totalTime=The total duration of the call in the current period (seconds)
AverageTime divided by count to get the average latency
max In seconds
Maximum latency in the current period

9. threadpool

Name Tag keys Tag values Description
threadpool.corePoolSize id ${threadPoolName} Minimum number of threads
threadpool.maxThreads Maximum number of threads allowed
threadpool.poolSize Current actual number of threads
threadpool.currentThreadsBusy The current number of active threads, which is the number of tasks currently being executed
threadpool.queueSize Number of tasks currently queued
threadpool.rejectedCount The average number of tasks rejected per second during the current period
threadpool.taskCount Average number of tasks submitted per second during the statistical period
taskCount=(completed + queue + active)/period (seconds)
threadpool.completedTaskCount The average number of tasks completed per second during the statistical period
completedTaskCount=completed/period (seconds)

Fourth, business customization

Because ServiceComb has initialized the registry's registry, the business no longer has to create a registry.

Implement the MetricsInitializer interface, define the business-level Meters, or implement a custom Publisher, and then declare your implementation through the SPI mechanism.

1.Meters:

Creating Meters capabilities is provided by spectator, available in the [netflix spectator] (https://github.com/Netflix/spectator) documentation

2.Publisher:

Periodically output scenarios, such as log scenarios, subscribe to org.apache.servicecomb.foundation.metrics.PolledEvent via eventBus, PolledEvent.getMeters() is the statistical result of this cycle. Non-periodic output scenarios, such as access through the RESTful interface, the statistical results of this cycle can be obtained through globalRegistry.iterator()

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