Metrics

Some metrics are emitted when replication occurs to a remote destination. The granularity of the metrics recorded is at destination level, however when a particular project replication is flagged as slow. This happens when the replication took longer than allowed threshold (see remote.NAME.slowLatencyThreshold in config.md)

The reason only slow metrics are published, rather than all, is to contain their number, which, on a big Gerrit installation could potentially be considerably big.

Project level

• plugins_replication_latency_slower_than_ - Time spent pushing to remote (in ms)

Destination level

• plugins_replication_replication_delay_ - Time spent waiting before pushing to remote (in ms)
• plugins_replication_replication_retries_ - Number of retries when pushing to remote
• plugins_replication_replication_latency_ - Time spent pushing to remote (in ms)

Example

# HELP plugins_replication_replication_delay_destination Generated from Dropwizard metric import (metric=plugins/replication/replication_delay/destination, type=com.codahale.metrics.Histogram)
# TYPE plugins_replication_replication_delay_destination summary
plugins_replication_replication_delay_destinationName{quantile="0.5",} 65726.0
plugins_replication_replication_delay_destinationName{quantile="0.75",} 65726.0
plugins_replication_replication_delay_destinationName{quantile="0.95",} 65726.0
plugins_replication_replication_delay_destinationName{quantile="0.98",} 65726.0
plugins_replication_replication_delay_destinationName{quantile="0.99",} 65726.0
plugins_replication_replication_delay_destinationName{quantile="0.999",} 65726.0
plugins_replication_replication_delay_destinationName_count 3.0

# HELP plugins_replication_replication_retries_destination Generated from Dropwizard metric import (metric=plugins/replication/replication_retries/destination, type=com.codahale.metrics.Histogram)
# TYPE plugins_replication_replication_retries_destination summary
plugins_replication_replication_retries_destinationName{quantile="0.5",} 1.0
plugins_replication_replication_retries_destinationName{quantile="0.75",} 1.0
plugins_replication_replication_retries_destinationName{quantile="0.95",} 1.0
plugins_replication_replication_retries_destinationName{quantile="0.98",} 1.0
plugins_replication_replication_retries_destinationName{quantile="0.99",} 1.0
plugins_replication_replication_retries_destinationName{quantile="0.999",} 1.0
plugins_replication_replication_retries_destinationName_count 3.0

# HELP plugins_replication_replication_latency_destinationName Generated from Dropwizard metric import (metric=plugins/replication/replication_latency/destinationName, type=com.codahale.metrics.Timer)
# TYPE plugins_replication_replication_latency_destinationName summary
plugins_replication_replication_latency_destinationName{quantile="0.5",} 0.21199641400000002
plugins_replication_replication_latency_destinationName{quantile="0.75",} 0.321083881
plugins_replication_replication_latency_destinationName{quantile="0.95",} 0.321083881
plugins_replication_replication_latency_destinationName{quantile="0.98",} 0.321083881
plugins_replication_replication_latency_destinationName{quantile="0.99",} 0.321083881
plugins_replication_replication_latency_destinationName{quantile="0.999",} 0.321083881
plugins_replication_replication_latency_destinationName_count 2.0

# HELP plugins_replication_latency_slower_than_60_destinationName_projectName Generated from Dropwizard metric import (metric=plugins/replication/latency_slower_than/60/destinationName/projectName, type=com.codahale.metrics.Histogram)
# TYPE plugins_replication_latency_slower_than_60_destinationName_projectName summary
plugins_replication_latency_slower_than_60_destinationName_projectName{quantile="0.5",} 278.0
plugins_replication_latency_slower_than_60_destinationName_projectName{quantile="0.75",} 278.0
plugins_replication_latency_slower_than_60_destinationName_projectName{quantile="0.95",} 278.0
plugins_replication_latency_slower_than_60_destinationName_projectName{quantile="0.98",} 278.0
plugins_replication_latency_slower_than_60_destinationName_projectName{quantile="0.99",} 278.0
plugins_replication_latency_slower_than_60_destinationName_projectName{quantile="0.999",} 278.0
plugins_replication_latency_slower_than_60_destinationName_projectName 1.0