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Merge pull request #3066 from matrix-org/rav/remove_redundant_metrics
Remove redundant metrics which were deprecated in 0.27.0.
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commit
d1679a4ed7
@ -1,3 +1,12 @@
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Changes in synapse v0.28.0 (2018-xx-xx)
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=======================================
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As previously advised, this release removes a number of redundant Prometheus
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metrics. Administrators may need to update their dashboards and alerting rules
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to use the updated metric names, if they have not already done so. See
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`docs/metrics-howto.rst <docs/metrics-howto.rst#deprecated-metrics-removed-in-0-28-0>`_
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for more details.
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Changes in synapse v0.27.2 (2018-03-26)
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Changes in synapse v0.27.2 (2018-03-26)
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=======================================
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=======================================
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@ -60,6 +60,13 @@ We would appreciate it if you could assist by ensuring this module is available
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and ``report_stats`` is enabled. This will let us see if performance changes to
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and ``report_stats`` is enabled. This will let us see if performance changes to
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synapse are having an impact to the general community.
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synapse are having an impact to the general community.
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This release also removes a number of redundant Prometheus metrics.
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Administrators may need to update their dashboards and alerting rules to use
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the updated metric names, if they have not already done so. See
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`docs/metrics-howto.rst <docs/metrics-howto.rst#deprecated-metrics-removed-in-0-28-0>`_
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for more details.
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Upgrading to v0.15.0
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Upgrading to v0.15.0
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====================
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====================
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@ -34,6 +34,17 @@ How to monitor Synapse metrics using Prometheus
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Restart prometheus.
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Restart prometheus.
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Deprecated metrics removed in 0.28.0
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------------------------------------
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Synapse 0.28.0 removes all of the metrics deprecated by 0.27.0, which are those
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listed under "Old name" below. This has been done to reduce the bandwidth used
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by gathering metrics and the storage requirements for the Prometheus server, as
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well as reducing CPU overhead for both Synapse and Prometheus.
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Administrators should update any alerts or monitoring dashboards to use the
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"New name" listed below.
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Block and response metrics renamed for 0.27.0
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Block and response metrics renamed for 0.27.0
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---------------------------------------------
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---------------------------------------------
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@ -47,17 +47,6 @@ metrics = synapse.metrics.get_metrics_for(__name__)
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response_count = metrics.register_counter(
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response_count = metrics.register_counter(
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"response_count",
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"response_count",
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labels=["method", "servlet", "tag"],
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labels=["method", "servlet", "tag"],
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alternative_names=(
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# the following are all deprecated aliases for the same metric
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metrics.name_prefix + x for x in (
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"_requests",
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"_response_time:count",
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"_response_ru_utime:count",
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"_response_ru_stime:count",
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"_response_db_txn_count:count",
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"_response_db_txn_duration:count",
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)
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)
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)
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)
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requests_counter = metrics.register_counter(
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requests_counter = metrics.register_counter(
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@ -73,39 +62,24 @@ outgoing_responses_counter = metrics.register_counter(
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response_timer = metrics.register_counter(
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response_timer = metrics.register_counter(
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"response_time_seconds",
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"response_time_seconds",
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labels=["method", "servlet", "tag"],
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labels=["method", "servlet", "tag"],
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alternative_names=(
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metrics.name_prefix + "_response_time:total",
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),
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)
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)
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response_ru_utime = metrics.register_counter(
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response_ru_utime = metrics.register_counter(
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"response_ru_utime_seconds", labels=["method", "servlet", "tag"],
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"response_ru_utime_seconds", labels=["method", "servlet", "tag"],
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alternative_names=(
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metrics.name_prefix + "_response_ru_utime:total",
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),
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)
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)
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response_ru_stime = metrics.register_counter(
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response_ru_stime = metrics.register_counter(
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"response_ru_stime_seconds", labels=["method", "servlet", "tag"],
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"response_ru_stime_seconds", labels=["method", "servlet", "tag"],
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alternative_names=(
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metrics.name_prefix + "_response_ru_stime:total",
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),
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)
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)
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response_db_txn_count = metrics.register_counter(
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response_db_txn_count = metrics.register_counter(
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"response_db_txn_count", labels=["method", "servlet", "tag"],
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"response_db_txn_count", labels=["method", "servlet", "tag"],
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alternative_names=(
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metrics.name_prefix + "_response_db_txn_count:total",
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),
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)
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)
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# seconds spent waiting for db txns, excluding scheduling time, when processing
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# seconds spent waiting for db txns, excluding scheduling time, when processing
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# this request
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# this request
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response_db_txn_duration = metrics.register_counter(
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response_db_txn_duration = metrics.register_counter(
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"response_db_txn_duration_seconds", labels=["method", "servlet", "tag"],
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"response_db_txn_duration_seconds", labels=["method", "servlet", "tag"],
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alternative_names=(
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metrics.name_prefix + "_response_db_txn_duration:total",
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),
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)
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)
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# seconds spent waiting for a db connection, when processing this request
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# seconds spent waiting for a db connection, when processing this request
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@ -31,53 +31,28 @@ metrics = synapse.metrics.get_metrics_for(__name__)
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block_counter = metrics.register_counter(
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block_counter = metrics.register_counter(
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"block_count",
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"block_count",
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labels=["block_name"],
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labels=["block_name"],
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alternative_names=(
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# the following are all deprecated aliases for the same metric
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metrics.name_prefix + x for x in (
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"_block_timer:count",
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"_block_ru_utime:count",
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"_block_ru_stime:count",
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"_block_db_txn_count:count",
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"_block_db_txn_duration:count",
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)
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)
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)
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)
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block_timer = metrics.register_counter(
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block_timer = metrics.register_counter(
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"block_time_seconds",
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"block_time_seconds",
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labels=["block_name"],
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labels=["block_name"],
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alternative_names=(
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metrics.name_prefix + "_block_timer:total",
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),
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)
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)
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block_ru_utime = metrics.register_counter(
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block_ru_utime = metrics.register_counter(
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"block_ru_utime_seconds", labels=["block_name"],
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"block_ru_utime_seconds", labels=["block_name"],
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alternative_names=(
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metrics.name_prefix + "_block_ru_utime:total",
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),
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)
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)
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block_ru_stime = metrics.register_counter(
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block_ru_stime = metrics.register_counter(
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"block_ru_stime_seconds", labels=["block_name"],
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"block_ru_stime_seconds", labels=["block_name"],
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alternative_names=(
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metrics.name_prefix + "_block_ru_stime:total",
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),
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)
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)
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block_db_txn_count = metrics.register_counter(
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block_db_txn_count = metrics.register_counter(
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"block_db_txn_count", labels=["block_name"],
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"block_db_txn_count", labels=["block_name"],
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alternative_names=(
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metrics.name_prefix + "_block_db_txn_count:total",
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),
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)
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)
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# seconds spent waiting for db txns, excluding scheduling time, in this block
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# seconds spent waiting for db txns, excluding scheduling time, in this block
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block_db_txn_duration = metrics.register_counter(
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block_db_txn_duration = metrics.register_counter(
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"block_db_txn_duration_seconds", labels=["block_name"],
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"block_db_txn_duration_seconds", labels=["block_name"],
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alternative_names=(
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metrics.name_prefix + "_block_db_txn_duration:total",
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),
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)
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)
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# seconds spent waiting for a db connection, in this block
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# seconds spent waiting for a db connection, in this block
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