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.. _Optimization:
Optimization
============
If you're feeling your Buildbot is running a bit slow, here are some tricks that may help you, but use them at your own risk.
Properties load speedup
-----------------------
For example, if most of your build properties are strings, you can gain an approx.
30% speedup if you put this snippet of code inside your master.cfg file::
def speedup_json_loads():
import json, re
original_decode = json._default_decoder.decode
my_regexp = re.compile(r'^\[\"([^"]*)\",\s+\"([^"]*)\"\]$')
def decode_with_re(str, *args, **kw):
m = my_regexp.match(str)
try:
return list(m.groups())
except:
return original_decode(str, *args, **kw)
json._default_decoder.decode = decode_with_re
speedup_json_loads()
It patches json decoder so that it would first try to extract a value from JSON that is a list of two strings (which is the case for a property being a string), and would fallback to general JSON decoder on any error.
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