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Track db txn time in millisecs

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... to reduce the amount of floating-point foo we do.
This commit is contained in:
Richard van der Hoff 2018-01-11 18:17:54 +00:00
parent 44a498418c
commit 6324b65f08
4 changed files with 17 additions and 10 deletions
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8
synapse/util/metrics.py
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@ -72,6 +72,7 @@ block_db_txn_count = metrics.register_counter(
),
)
# 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=(
@ -95,7 +96,7 @@ def measure_func(name):
class Measure(object):
__slots__ = [
"clock", "name", "start_context", "start", "new_context", "ru_utime",
"ru_stime", "db_txn_count", "db_txn_duration", "created_context"
"ru_stime", "db_txn_count", "db_txn_duration_ms", "created_context"
]
def __init__(self, clock, name):
@ -115,7 +116,7 @@ class Measure(object):
self.ru_utime, self.ru_stime = self.start_context.get_resource_usage()
self.db_txn_count = self.start_context.db_txn_count
self.db_txn_duration = self.start_context.db_txn_duration
self.db_txn_duration_ms = self.start_context.db_txn_duration_ms
def __exit__(self, exc_type, exc_val, exc_tb):
if isinstance(exc_type, Exception) or not self.start_context:
@ -145,7 +146,8 @@ class Measure(object):
context.db_txn_count - self.db_txn_count, self.name
)
block_db_txn_duration.inc_by(
context.db_txn_duration - self.db_txn_duration, self.name
(context.db_txn_duration_ms - self.db_txn_duration_ms) / 1000.,
self.name
)
if self.created_context: