nilmdb/nilmdb/timer.py
Jim Paris 97bec3b1ee Optimization that uses slices on the table rather than checking each
row individually, when extracting data.

Switch to using bisect module when doing the bisection, to lessen the
chance of errors.

Added syslog ability for timer module, for timing stuff deep inside
the server.

Make the chunked/non-chunked test just give a warning, rather than
failing the tests, for debugging purposes.  Alternate approach would
be to disable "die on error" for the tests.


git-svn-id: https://bucket.mit.edu/svn/nilm/nilmdb@10896 ddd99763-3ecb-0310-9145-efcb8ce7c51f
2012-06-04 23:46:33 +00:00

22 lines
512 B
Python

# -*- coding: utf-8 -*-
# Simple timer to time a block of code, for optimization debugging
# use like:
# with nilmdb.Timer("flush"):
# foo.flush()
import contextlib
import time
@contextlib.contextmanager
def Timer(name = None, tosyslog = False):
start = time.time()
yield
elapsed = int((time.time() - start) * 1000)
msg = (name or 'elapsed') + ": " + str(elapsed) + " ms"
if tosyslog: # pragma: no cover
import syslog
syslog.syslog(msg)
else:
print msg