FusionReactor Agent Metrics
The FusionReactor Agent Metrics page provides a comprehensive reference for all metrics collected by the FusionReactor agent across application, JVM, request, and cloud infrastructure layers. These metrics are essential for performance monitoring, alerting, and anomaly detection in both traditional and cloud-native environments.
Metrics are grouped into categories based on the type of data they represent (e.g., CPU, memory, disk, transactions), and each entry includes a description and unit of measurement. Many of these metrics are designed to support real-time observability and are commonly used to configure alerts and build custom dashboards.
Use this reference to:
Understand what each metric represents
Identify which metrics are alertable
Configure meaningful dashboards and threshold-based alerts
Understanding metric labels
All FusionReactor Agent metrics include a standard set of default labels . These provide important context and make it easier to filter, group, and analyze data in cloud or containerized environments.
Default labels (applied to all metrics):
client_idcontainer_iddockerfusionreactorgroupinstancejob
These labels are automatically attached to each metric and do not need to be configured manually.
Some metrics also include additional labels
jvm_threads_state includes a state label (e.g. RUNNABLE, WAITING, BLOCKED).fr_cf_requests_throughput_error_time may include status to distinguish between successful vs. failed requests (e.g., 200, 404, 500) and type to categorize request origin or type — such as api, static, internal, etc.
When extra labels are used, they are shown in the Labels column of the tables below. If a metric only uses the default labels, this is marked as Default .
Metrics
Service uptime & Instance info
Name
Description
Labels
Unit
up
Indicates the instance is up.
Labels
fusionreactor_build_info
FusionReactor build info.
Labels
fr_server_info
FusionReactor server info.
Labels
fusionreactor_license_info
FusionReactor license info.
Labels
CPU usage
Metric Name
Description
Labels
Unit
process_cpu_usage
CPU utilization (%) of the instance across all cores
Default
%
process_cpu_total_usage
Total CPU utilization (%) across all cores and all processes
Default
%
Memory usage
Metric Name
Description
Labels
Unit
jvm_memory_pool_bytes_committed
Committed memory per memory pool
Labels MiB
jvm_memory_pool_bytes_max
Maximum memory per memory pool
Labels MiB
jvm_memory_pool_bytes_used
Used memory per memory pool
Labels MiB
jvm_memory_pool_bytes_total
Total memory pool size
Labels MiB
jvm_memory_bytes_committed
Committed memory
Labels MiB
jvm_memory_bytes_max
Maximum available memory
Labels MiB
jvm_memory_bytes_used
Used memory
Labels MiB
jvm_memory_bytes_used_percent
Percentage of memory used
Labels %
jvm_memory_bytes_committed_percent
Percentage of memory committed
Labels %
jvm_gc_collection_seconds
Time spent in GC, per GC type
Labels ms/s
jvm_gc_collection_calls
Number of GC invocations, per GC type
Labels GC/s
Thread & Class activity
Metric Name
Description
Labels
Unit
jvm_threads_current
Number of live JVM threads
Default
jvm_threads_state
JVM threads by state
Labels
jvm_classes_loaded
Count of classes loaded in the JVM
Default
jvm_classes_unloaded
Count of classes unloaded from the JVM
Default
jvm_classes_loaded_total
Cumulative total of loaded classes
Default
Application
Metric Name
Description
Labels
Unit
app_database_throughput
Per-application average duration (ms) of database transactions over the past minute.
Labels ms
app_database_throughput_cnt
Per-application count of database transactions over the past minute.
Labels
app_database_throughput_sum
The application's total database transaction duration (in ms) for the last minute.
Labels ms
app_database_error
Per-application average duration (ms) of database error transactions over the past minute.
Labels ms
app_database_error_cnt
Per-application count of database error transactions over the past minute.
Labels
app_database_error_sum
Per-application total duration (ms) of database error transactions over the past minute.
Labels ms
app_cpu
Per-application total CPU time (ms) over the past minute.
Labels ms
app_cpu_cnt
Per-application total CPU time (ms) over the past minute. (Count)
Labels
app_cpu_sum
Per-application total CPU time (ms) over the past minute. (Sum)
Labels ms
app_memory
Per-application total memory usage (bytes) over the past minute.
Labels bytes
app_memory_cnt
Per-application total memory usage (bytes) over the past minute. (Count)
Labels
app_memory_sum
Per-application total memory usage (bytes) over the past minute. (Sum)
Labels bytes
app_client_error_count
Per-application average duration (ms) of WebRequest 4xx responses over the past minute.
Labels ms
app_client_error_count_cnt
Per-application count of WebRequest 4xx responses over the past minute.
Labels
app_client_error_count_sum
Per-application total duration (ms) of WebRequest 4xx responses over the past minute.
Labels ms
app_server_error_count
Per-application average duration (ms) of WebRequest 5xx responses over the past minute.
Labels ms
app_server_error_count_cnt
Per-application count of WebRequest 5xx responses over the past minute.
Labels
app_server_error_count_sum
Per-application total duration (ms) of WebRequest 5xx responses over the past minute.
Labels ms
app_WebRequest
Per-application average duration (ms) of WebRequest transactions over the past minute.
Labels ms
app_WebRequest_cnt
Per-application count of WebRequest transactions over the past minute.
Labels
app_WebRequest_sum
Per-application total duration (ms) of WebRequest transactions over the past minute.
Labels ms
app_up
Indicates the application was active in the past minute.
Labels
app_error_count
Per-application total errors over the last minute.
Labels
app_error_count_cnt
Per-application total errors over the last minute. (Count)
Labels
app_error_count_sum
Per-application total errors over the last minute. (Sum)
Labels
app_throughput
Per-application average duration (ms) of master transactions over the past minute.
Labels ms
app_throughput_cnt
Per-application count of master transactions over the past minute.
Labels
app_throughput_sum
Per-application total duration (ms) of master transactions over the past minute.
Labels ms
app_txn_error_count
Per-transaction total errors over the last minute.
Labels
app_txn_error_count_cnt
Per-transaction total errors over the last minute. (Count)
Labels
app_txn_error_count_sum
Per-transaction total errors over the last minute. (Sum)
Labels
app_txn_throughput
Per-transaction average duration (ms) of master transactions over the past minute.
Labels ms
app_txn_throughput_cnt
Per-transaction count of master transactions over the past minute.
Labels
app_txn_throughput_sum
Per-transaction total duration (ms) of master transactions over the past minute.
Labels ms
Transactions
Metric Name
Description
Labels
Unit
txn_active_activity
Number of active transactions per second, per-flavor, 1-min avg.
Labels
txn_active_activity_cnt
Number of samples taken for the base metric over the past minute.
Labels
txn_active_activity_sum
Total sum of values from all samples for the base metric over the past minute.
Labels
txn_active_time
Avg. duration of active transactions per second (ms), per-flavor, 1-min avg.
Labels ms/s
txn_active_time_cnt
Number of samples taken for the base metric over the past minute.
Labels
txn_active_time_sum
Total sum of values from all samples for the base metric over the past minute.
Labels
txn_error_activity
Number of transactions with errors per second, per-flavor, 1-min avg.
Labels
txn_error_activity_cnt
Number of samples taken for the base metric over the past minute.
Labels
txn_error_activity_sum
Total sum of values from all samples for the base metric over the past minute.
Labels
txn_error_time
Avg. duration of transactions with errors per second (ms), per-flavor, 1-min avg.
Labels ms/s
txn_error_time_cnt
Number of samples taken for the base metric over the past minute.
Labels
txn_error_time_sum
Total sum of values from all samples for the base metric over the past minute.
Labels
txn_history_activity
Number of completed transactions per second, per-flavor, 1-min avg.
Labels
txn_history_activity_cnt
Number of samples taken for the base metric over the past minute.
Labels
txn_history_activity_sum
Total sum of values from all samples for the base metric over the past minute.
Labels
txn_history_time
Avg. duration of completed transactions per second (ms), per-flavor, 1-min avg.
Labels ms/s
txn_history_time_cnt
Number of samples taken for the base metric over the past minute.
Labels
txn_history_time_sum
Total sum of values from all samples for the base metric over the past minute.
Labels
System
Metric Name
Description
Labels
Unit
fr_filesystem_transmitted_bytes
Data transmitted since boot (per network device)
Labels B
fr_filesystem_received_bytes
Data received since boot (per network device)
Labels B
fr_filesystem_read_bytes_total
Total disk read since boot
Labels B
fr_filesystem_write_bytes_total
Total disk write since boot
Labels B
fr_filesystem_avail_bytes
Available disk space
Labels B
fr_filesystem_total_bytes
Total disk space
Labels B
fr_filesystem_used_bytes
Used disk space
Labels B
fr_system_cpu_seconds_total
Cumulative CPU seconds by system, per-CPU-category
Labels s
fr_cf_system_cached_queries
ColdFusion cached query count, 1-min avg.
Default
count
fr_cf_system_cached_templates
ColdFusion template cache count,
Default
count
fr_cf_system_template_cache_hit_ratio
ColdFusion template cache hit ratio, 1-
Default
ratio (%)
fr_cf_system_throttled_memory
ColdFusion total throttle memory used, 1-min avg.
Default
bytes
fr_cf_system_throttled_queue_size
ColdFusion throttle queue size, 1-m
Default
count
fr_cf_system_concurrent_users
ColdFusion concurrent user count, 1-
Default
count
fr_cf_system_cf_thread_throughput
ColdFusion thread count per 5 seconds, per-thread-status, 1-min avg
Labels count/5s
fr_cf_system_scopes_size_kilobytes
ColdFusion cache/scope size (KB), per-cache/scope, 1-min avg.
Labels kilobytes
fr_cf_requests_throughput
ColdFusion request count per 5 seconds, per-request-type and per-request-status, 1-min avg.
Labels count/5s
Sessions
Metric Name
Description
Unit
Labels
sessions_created_total
Total number of sessions created
Default
sessions_active_total
Total number of active sessions
Default
sessions_rejected_total
Total number of rejected sessions
Default
sessions_destryed_total
Total number of sessions destroyed, 1-min avg.
Default
Coldfusion Metrics
Metric Name
Description
Unit
Labels
fr_cf_hitcounts_total
Total ColdFusion template hits
Labels
fr_cf_system_cached_templates
ColdFusion cached template count
Default
Labels
Labels are key-value pairs attached to metrics that provide additional context. They help distinguish between different dimensions of the same metric, such as the source, type, or environment. Labels are essential for querying, filtering, grouping, and visualizing metric data effectively.
app_database_throughput / app_database_error
Name
Description
Example
More info
app_name
Application Name
JSP Test App
database
The database by name
DerbyMemoryDB
table
Database table
company_d
action
Database action
insert
app_cpu / app_memory
Name
Description
Example
More info
app_name
Application Name
JSP Test App
app_client_error_count / app_server_error_count
Name
Description
Example
More info
app_name
Application Name
JSP Test App
app_WebRequest
Name
Description
Example
More info
app_name
Application Name
JSP Test App
status
Status code
Not present on status code
app_up / app_error_count / app_throughput
Name
Description
Example
More info
app_name
Application Name
JSP Test App
app_txn_error_count / app_txn_throughput
Name
Description
Example
More Info
app_name
Application Name
JSP Test App
txn_name
Transaction name
controls.print_00… (truncated)
max 2048 chars
fusionreactor_build_info
Name
Description
Example
More info
version
FR version
12.1.1
build_no
CI Build number
11408
branch
Git branch name
12.1.1
revision
Git commit hash
c83b8bbf
fr_server_info
Name
Description
Example
More info
java_runtime_name
Java runtime name
OpenJDK Runtime
java_runtime_version
Java runtime ver
13.0.2+8
type
Server type
TOMCAT
Can be UNKNOWN
home
Server home
/home/luke/app/fr
Not present if not defined
version
Server version
9.0.50
server_name
Server name
page
UNKNOWN if not detected
engine
ColdFusion engine
lucee_version
Lucee version
UNKNOWN if not detected
tomcat_version
Tomcat version
9.0.93
Not present if not detected
coldfusion_version
ColdFusion version
CommandBox only
coldfusion_product_name
ColdFusion prod ID
CF only
coldfusion_build
ColdFusion build
330808
CF only
coldfusion_major
ColdFusion major
2023
CF only
coldfusion_minor
ColdFusion minor
0
CF only
coldfusion_service
ColdFusion service
CF only
coldfusion_hotfix
ColdFusion hotfix
hf-2023-00010-3
CF only
fusionreactor_license_info
Name
Description
Example
More info
type
License type
ULT
state
License state
active
cloud
Is Cloud lic
true
fr_cf_hitcounts_total
Name
Description
Example
More info
type
Hit count type
One of: ref, web
fr_cf_system_cf_thread_throughput
Name
Description
Example
More info
status
CF thread status
running
fr_cf_system_scopes_size_kilobytes
Name
Description
Example
More info
scope
CF scope type
session_scope
template_cache
fr_cf_requests_throughput
Name
Description
Example
More info
status
Request status
running
type
Request type
web service
fr_system_cpu_seconds_total
Name
Description
Example
More info
mode
Category of CPU time
nice
fr_network_received_bytes_total / fr_network_transmitted_bytes_total
Name
Description
Example
More info
device
Network device
enp59s0f1
fr_filesystem_read_bytes_total
Name
Description
Example
More info
device
Disk name
/dev/nvme0n1p1
jvm_gc_collection_seconds / jvm_gc_collection_calls
Name
Description
Example
More info
gc
GC type
G1 Young Gen
jvm_threads_state
Name
Description
Example
More info
state
Thread state
runnable
jvm_memory_pool_bytes_committed \ jvm_memory_pool_bytes_used \ jvm_memory_pool_bytes_max
Name
Description
Example
More info
pool
Memory space
G1 Old Gen
jvm_memory_bytes_used / jvm_memory_bytes_committed / jvm_memory_bytes_ma / jvm_memory_bytes_used_percentage / jvm_memory_bytes_committed_percentage
Name
Description
Example
More info
area
Memory area
heap
txn_activity / txn_history / txn_error
Name
Description
Example
More info
flavor
Transaction flavor
WebRequest
Can only be one of: WebRequest, CFML, REST, etc.
uem
Name
Description
Example
More info
type
UEM type
wr
up
Name
Description
Example
More info
start_ts
Start time of the JVM in milliseconds
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