document metrics changes
Richard van der Hoff
parent
39f4e29d01
commit
ee7a1cabd8
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@ -2,7 +2,10 @@ Unreleased
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==========
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synctl no longer starts the main synapse when using ``-a`` option with workers.
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A new worker file should be added with ``worker_app: synapse.app.homeserver``
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A new worker file should be added with ``worker_app: synapse.app.homeserver``.
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This release also begins the process of renaming a number of the metrics
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reported to prometheus. See `docs/metrics-howto.rst <docs/metrics-howto.rst#block-and-response-metrics-renamed-for-0-27-0>`_.
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Changes in synapse v0.26.0 (2018-01-05)
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@ -16,7 +16,7 @@ How to monitor Synapse metrics using Prometheus
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metrics_port: 9092
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Also ensure that ``enable_metrics`` is set to ``True``.
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Restart synapse.
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3. Add a prometheus target for synapse.
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@ -28,11 +28,58 @@ How to monitor Synapse metrics using Prometheus
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static_configs:
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- targets: ["my.server.here:9092"]
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If your prometheus is older than 1.5.2, you will need to replace
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If your prometheus is older than 1.5.2, you will need to replace
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``static_configs`` in the above with ``target_groups``.
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Restart prometheus.
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Block and response metrics renamed for 0.27.0
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---------------------------------------------
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Synapse 0.27.0 begins the process of rationalising the duplicate ``*:count``
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metrics reported for the resource tracking for code blocks and HTTP requests.
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At the same time, the corresponding ``*:total`` metrics are being renamed, as
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the ``:total`` suffix no longer makes sense in the absence of a corresponding
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``:count`` metric.
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To enable a graceful migration path, this release just adds new names for the
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metrics being renamed. A future release will remove the old ones.
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The following table shows the new metrics, and the old metrics which they are
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replacing.
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==================================================== ===================================================
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New name Old name
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==================================================== ===================================================
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synapse_util_metrics_block_count synapse_util_metrics_block_timer:count
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synapse_util_metrics_block_count synapse_util_metrics_block_ru_utime:count
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synapse_util_metrics_block_count synapse_util_metrics_block_ru_stime:count
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synapse_util_metrics_block_count synapse_util_metrics_block_db_txn_count:count
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synapse_util_metrics_block_count synapse_util_metrics_block_db_txn_duration:count
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synapse_util_metrics_block_time_seconds synapse_util_metrics_block_timer:total
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synapse_util_metrics_block_ru_utime_seconds synapse_util_metrics_block_ru_utime:total
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synapse_util_metrics_block_ru_stime_seconds synapse_util_metrics_block_ru_stime:total
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synapse_util_metrics_block_db_txn_count synapse_util_metrics_block_db_txn_count:total
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synapse_util_metrics_block_db_txn_duration_seconds synapse_util_metrics_block_db_txn_duration:total
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synapse_http_server_response_count synapse_http_server_requests
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synapse_http_server_response_count synapse_http_server_response_time:count
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synapse_http_server_response_count synapse_http_server_response_ru_utime:count
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synapse_http_server_response_count synapse_http_server_response_ru_stime:count
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synapse_http_server_response_count synapse_http_server_response_db_txn_count:count
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synapse_http_server_response_count synapse_http_server_response_db_txn_duration:count
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synapse_http_server_response_time_seconds synapse_http_server_response_time:total
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synapse_http_server_response_ru_utime_seconds synapse_http_server_response_ru_utime:total
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synapse_http_server_response_ru_stime_seconds synapse_http_server_response_ru_stime:total
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synapse_http_server_response_db_txn_count synapse_http_server_response_db_txn_count:total
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synapse_http_server_response_db_txn_duration_seconds synapse_http_server_response_db_txn_duration:total
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==================================================== ===================================================
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Standard Metric Names
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---------------------
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@ -42,7 +89,7 @@ have been changed to seconds, from miliseconds.
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================================== =============================
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New name Old name
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---------------------------------- -----------------------------
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================================== =============================
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process_cpu_user_seconds_total process_resource_utime / 1000
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process_cpu_system_seconds_total process_resource_stime / 1000
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process_open_fds (no 'type' label) process_fds
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@ -52,8 +99,8 @@ The python-specific counts of garbage collector performance have been renamed.
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=========================== ======================
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New name Old name
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--------------------------- ----------------------
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python_gc_time reactor_gc_time
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=========================== ======================
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python_gc_time reactor_gc_time
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python_gc_unreachable_total reactor_gc_unreachable
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python_gc_counts reactor_gc_counts
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=========================== ======================
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@ -62,7 +109,7 @@ The twisted-specific reactor metrics have been renamed.
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==================================== =====================
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New name Old name
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------------------------------------ ---------------------
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==================================== =====================
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python_twisted_reactor_pending_calls reactor_pending_calls
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python_twisted_reactor_tick_time reactor_tick_time
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==================================== =====================
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