lsst.dax.apdb.timer.Timer Class Reference
Public Member Functions | |
| __init__ (self, str name, *MonAgent|logging.Logger args, _TagsType|None tags=None, int log_level=logging.INFO) | |
| None | add_values (self, **int|float values) |
| Timer | start (self) |
| Timer | stop (self) |
| Timer | dump (self) |
| tuple[float, float, float] | accumulated (self) |
| dict[str, int|float] | as_dict (self, str prefix="") |
| str | __str__ (self) |
| Timer | __enter__ (self) |
| Any | __exit__ (self, type|None exc_type, Any exc_val, Any exc_tb) |
Protected Attributes | |
| _name = name | |
| list | _mon_agents = [] |
| list | _loggers = [] |
| _tags = tags | |
| _log_level = log_level | |
| float | _startReal = -1.0 |
| float | _startUser = -1.0 |
| float | _startSys = -1.0 |
| float | _sumReal = 0.0 |
| float | _sumUser = 0.0 |
| float | _sumSys = 0.0 |
| dict | _extra_values = {} |
Detailed Description
Instance of this class can be used to track consumed time.
Parameters
----------
name : `str`
Timer name, will be use for reporting to both monitoring and logging.
Typically the name should look like an identifier for ease of use with
downstream monitoring software.
*args : `MonAgent` or `logging.Logger`
Positional arguments can include a combination of `MonAgent` and
`logging.Logger` instances. They will be used to report accumulated
times on exit from context or by calling `dump` method directly.
tags : `~collections.abc.Mapping` [`str`, `str` or `int`], optional
Keyword argument, additional tags added to monitoring report and
logging output.
log_level : `int`, optional
Keyword argument, level used for logging output, default is
`logging.INFO`.
Notes
-----
This class is also a context manager and can be used in a `with` statement.
By default it prints consumed CPU time and real time spent in a context.
Example:
with Timer("SelectTimer", logger):
engine.execute('SELECT ...')
Constructor & Destructor Documentation
◆ __init__()
| lsst.dax.apdb.timer.Timer.__init__ | ( | self, | |
| str | name, | ||
| *MonAgent | logging.Logger | args, | ||
| _TagsType | None | tags = None, | ||
| int | log_level = logging.INFO ) |
Definition at line 73 of file timer.py.
79 ):
80 self._name = name
81 self._mon_agents: list[MonAgent] = []
82 self._loggers: list[logging.Logger] = []
83 self._tags = tags
84 self._log_level = log_level
85
86 for arg in args:
87 if isinstance(arg, MonAgent):
88 self._mon_agents.append(arg)
89 elif isinstance(arg, logging.Logger):
90 self._loggers.append(arg)
91
92 self._startReal = -1.0
93 self._startUser = -1.0
94 self._startSys = -1.0
95 self._sumReal = 0.0
96 self._sumUser = 0.0
97 self._sumSys = 0.0
98
99 self._extra_values: dict[str, int | float] = {}
100
Member Function Documentation
◆ __enter__()
| Timer lsst.dax.apdb.timer.Timer.__enter__ | ( | self | ) |
◆ __exit__()
| Any lsst.dax.apdb.timer.Timer.__exit__ | ( | self, | |
| type | None | exc_type, | ||
| Any | exc_val, | ||
| Any | exc_tb ) |
◆ __str__()
| str lsst.dax.apdb.timer.Timer.__str__ | ( | self | ) |
Definition at line 162 of file timer.py.
162 def __str__(self) -> str:
163 real, user, sys = self.accumulated()
164 info = f"real={real:.3f} user={user:.3f} sys={sys:.3f}"
165 if self._name:
166 info = self._name + ": " + info
167 if self._tags:
168 info += f" (tags={self._tags})"
169 return info
170
◆ accumulated()
| tuple[float, float, float] lsst.dax.apdb.timer.Timer.accumulated | ( | self | ) |
Return accumulated real, user, and system times in seconds.
Definition at line 139 of file timer.py.
139 def accumulated(self) -> tuple[float, float, float]:
140 """Return accumulated real, user, and system times in seconds."""
141 real = self._sumReal
142 user = self._sumUser
143 sys = self._sumSys
144 if self._startReal > 0:
145 real += time.time() - self._startReal
146 ru = resource.getrusage(resource.RUSAGE_SELF)
147 user += ru.ru_utime - self._startUser
148 sys += ru.ru_stime - self._startSys
149 return (real, user, sys)
150
◆ add_values()
| None lsst.dax.apdb.timer.Timer.add_values | ( | self, | |
| **int | float | values ) |
Add values to dump together with timing information.
Parameters
----------
**values : int | float
Key/values to add to timer information.
Definition at line 101 of file timer.py.
101 def add_values(self, **values: int | float) -> None:
102 """Add values to dump together with timing information.
103
104 Parameters
105 ----------
106 **values : int | float
107 Key/values to add to timer information.
108 """
109 self._extra_values.update(values)
110
◆ as_dict()
| dict[str, int | float] lsst.dax.apdb.timer.Timer.as_dict | ( | self, | |
| str | prefix = "" ) |
Return timers and extra values as dictionary.
Definition at line 151 of file timer.py.
151 def as_dict(self, prefix: str = "") -> dict[str, int | float]:
152 """Return timers and extra values as dictionary."""
153 real, user, sys = self.accumulated()
154 values = {
155 f"{prefix}real": real,
156 f"{prefix}user": user,
157 f"{prefix}sys": sys,
158 }
159 values.update(self._extra_values)
160 return values
161
◆ dump()
| Timer lsst.dax.apdb.timer.Timer.dump | ( | self | ) |
Dump timer statistics
Definition at line 131 of file timer.py.
131 def dump(self) -> Timer:
132 """Dump timer statistics"""
133 for logger in self._loggers:
134 logger.log(self._log_level, "%s", self)
135 for agent in self._mon_agents:
136 agent.add_record(self._name, values=self.as_dict(), tags=self._tags)
137 return self
138
◆ start()
| Timer lsst.dax.apdb.timer.Timer.start | ( | self | ) |
◆ stop()
| Timer lsst.dax.apdb.timer.Timer.stop | ( | self | ) |
Stop timer.
Definition at line 119 of file timer.py.
119 def stop(self) -> Timer:
120 """Stop timer."""
121 if self._startReal > 0:
122 self._sumReal += time.time() - self._startReal
123 ru = resource.getrusage(resource.RUSAGE_SELF)
124 self._sumUser += ru.ru_utime - self._startUser
125 self._sumSys += ru.ru_stime - self._startSys
126 self._startReal = -1.0
127 self._startUser = -1.0
128 self._startSys = -1.0
129 return self
130
Member Data Documentation
◆ _extra_values
◆ _log_level
◆ _loggers
◆ _mon_agents
◆ _name
◆ _startReal
◆ _startSys
◆ _startUser
◆ _sumReal
◆ _sumSys
◆ _sumUser
◆ _tags
The documentation for this class was generated from the following file:
- /j/snowflake/release/lsstsw/stack/lsst-scipipe-11.0.0/Linux/dax_apdb/g2ac17093b6+61d6563b1e/python/lsst/dax/apdb/timer.py
Generated on Mon Oct 6 2025 07:04:35 for LSST Applications by
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