diff options
| -rw-r--r-- | CHANGES.rst | 9 | ||||
| -rw-r--r-- | UPGRADE.rst | 9 | ||||
| -rw-r--r-- | docs/metrics-howto.rst | 11 | ||||
| -rw-r--r-- | synapse/http/server.py | 26 | ||||
| -rw-r--r-- | synapse/util/metrics.py | 25 |
5 files changed, 28 insertions, 52 deletions
diff --git a/CHANGES.rst b/CHANGES.rst index 38372381ac..5fbad54427 100644 --- a/CHANGES.rst +++ b/CHANGES.rst @@ -1,3 +1,12 @@ +Changes in synapse v0.28.0 (2018-xx-xx) +======================================= + +As previously advised, this release removes a number of redundant Prometheus +metrics. Administrators may need to update their dashboards and alerting rules +to use the updated metric names, if they have not already done so. See +`docs/metrics-howto.rst <docs/metrics-howto.rst#deprecated-metrics-removed-in-0-28-0>`_ +for more details. + Changes in synapse v0.27.2 (2018-03-26) ======================================= diff --git a/UPGRADE.rst b/UPGRADE.rst index f6bb1070b1..39a16b1c0c 100644 --- a/UPGRADE.rst +++ b/UPGRADE.rst @@ -52,7 +52,7 @@ Upgrading to $NEXT_VERSION ==================== This release expands the anonymous usage stats sent if the opt-in -``report_stats`` configuration is set to ``true``. We now capture RSS memory +``report_stats`` configuration is set to ``true``. We now capture RSS memory and cpu use at a very coarse level. This requires administrators to install the optional ``psutil`` python module. @@ -60,6 +60,13 @@ We would appreciate it if you could assist by ensuring this module is available and ``report_stats`` is enabled. This will let us see if performance changes to synapse are having an impact to the general community. +This release also removes a number of redundant Prometheus metrics. +Administrators may need to update their dashboards and alerting rules to use +the updated metric names, if they have not already done so. See +`docs/metrics-howto.rst <docs/metrics-howto.rst#deprecated-metrics-removed-in-0-28-0>`_ +for more details. + + Upgrading to v0.15.0 ==================== diff --git a/docs/metrics-howto.rst b/docs/metrics-howto.rst index 8acc479bc3..5e2d7c52ec 100644 --- a/docs/metrics-howto.rst +++ b/docs/metrics-howto.rst @@ -34,6 +34,17 @@ How to monitor Synapse metrics using Prometheus Restart prometheus. +Deprecated metrics removed in 0.28.0 +------------------------------------ + +Synapse 0.28.0 removes all of the metrics deprecated by 0.27.0, which are those +listed under "Old name" below. This has been done to reduce the bandwidth used +by gathering metrics and the storage requirements for the Prometheus server, as +well as reducing CPU overhead for both Synapse and Prometheus. + +Administrators should update any alerts or monitoring dashboards to use the +"New name" listed below. + Block and response metrics renamed for 0.27.0 --------------------------------------------- diff --git a/synapse/http/server.py b/synapse/http/server.py index f19c068ef6..02c7e46f08 100644 --- a/synapse/http/server.py +++ b/synapse/http/server.py @@ -47,17 +47,6 @@ metrics = synapse.metrics.get_metrics_for(__name__) response_count = metrics.register_counter( "response_count", labels=["method", "servlet", "tag"], - alternative_names=( - # the following are all deprecated aliases for the same metric - metrics.name_prefix + x for x in ( - "_requests", - "_response_time:count", - "_response_ru_utime:count", - "_response_ru_stime:count", - "_response_db_txn_count:count", - "_response_db_txn_duration:count", - ) - ) ) requests_counter = metrics.register_counter( @@ -73,39 +62,24 @@ outgoing_responses_counter = metrics.register_counter( response_timer = metrics.register_counter( "response_time_seconds", labels=["method", "servlet", "tag"], - alternative_names=( - metrics.name_prefix + "_response_time:total", - ), ) response_ru_utime = metrics.register_counter( "response_ru_utime_seconds", labels=["method", "servlet", "tag"], - alternative_names=( - metrics.name_prefix + "_response_ru_utime:total", - ), ) response_ru_stime = metrics.register_counter( "response_ru_stime_seconds", labels=["method", "servlet", "tag"], - alternative_names=( - metrics.name_prefix + "_response_ru_stime:total", - ), ) response_db_txn_count = metrics.register_counter( "response_db_txn_count", labels=["method", "servlet", "tag"], - alternative_names=( - metrics.name_prefix + "_response_db_txn_count:total", - ), ) # seconds spent waiting for db txns, excluding scheduling time, when processing # this request response_db_txn_duration = metrics.register_counter( "response_db_txn_duration_seconds", labels=["method", "servlet", "tag"], - alternative_names=( - metrics.name_prefix + "_response_db_txn_duration:total", - ), ) # seconds spent waiting for a db connection, when processing this request diff --git a/synapse/util/metrics.py b/synapse/util/metrics.py index e4b5687a4b..c3d8237e8f 100644 --- a/synapse/util/metrics.py +++ b/synapse/util/metrics.py @@ -31,53 +31,28 @@ metrics = synapse.metrics.get_metrics_for(__name__) block_counter = metrics.register_counter( "block_count", labels=["block_name"], - alternative_names=( - # the following are all deprecated aliases for the same metric - metrics.name_prefix + x for x in ( - "_block_timer:count", - "_block_ru_utime:count", - "_block_ru_stime:count", - "_block_db_txn_count:count", - "_block_db_txn_duration:count", - ) - ) ) block_timer = metrics.register_counter( "block_time_seconds", labels=["block_name"], - alternative_names=( - metrics.name_prefix + "_block_timer:total", - ), ) block_ru_utime = metrics.register_counter( "block_ru_utime_seconds", labels=["block_name"], - alternative_names=( - metrics.name_prefix + "_block_ru_utime:total", - ), ) block_ru_stime = metrics.register_counter( "block_ru_stime_seconds", labels=["block_name"], - alternative_names=( - metrics.name_prefix + "_block_ru_stime:total", - ), ) block_db_txn_count = metrics.register_counter( "block_db_txn_count", labels=["block_name"], - alternative_names=( - metrics.name_prefix + "_block_db_txn_count:total", - ), ) # seconds spent waiting for db txns, excluding scheduling time, in this block block_db_txn_duration = metrics.register_counter( "block_db_txn_duration_seconds", labels=["block_name"], - alternative_names=( - metrics.name_prefix + "_block_db_txn_duration:total", - ), ) # seconds spent waiting for a db connection, in this block |