In 8.0v6, I get consistent (albeit slow) performance in my own quick test,
averaging a fraction of a second for removal and about 5.5 seconds to add
100 knobs, followed by maybe 4 seconds for Nuke to actually redraw the
panel. 9.0 seems to be slightly slower. Disabling undo doesn't make a
difference either.
class PerfTest(nukescripts.panels.PythonPanel):
def __init__(self):
super(PerfTest, self).__init__('PerfTest', 'something')
self.addKnob(nuke.PyScript_Knob('rebuild'))
self.boolKnobs = []
def knobChanged(self, knob):
if knob.name() == 'rebuild':
self.rebuild()
def rebuild(self):
mark = time.time()
for k in reversed(self.boolKnobs):
self.removeKnob(k)
self.boolKnobs = []
mark 2 = time.time()
print 'knob removal:', mark2 - mark
for i in xrange(100):
k = nuke.Boolean_Knob('bool_' + str(i))
k.setFlag(nuke.STARTLINE)
self.addKnob(k)
self.boolKnobs.append(k)
print 'knob creation:', time.time() - mark2
-Nathan
From: michael vorberg
Sent: Tuesday, February 17, 2015 4:31 AM
To: Nuke Python discussion
Subject: [Nuke-python] nukescript panel add button
hi,
i create a nukescript panel which creates a some (boolean) buttons for nodes
in my script. i filter these nodes in the panel via a user text input.
if i start my panel it set a default filter and everything is fine and fast.
when i hit my update button, i execute a callback function (knobChanged) and
to delete all the create boolean knobs and search again in the nuke script
and create new knobs.
here everything gets slower over time, but i call the same functions as in
the startup.
i guess it will now call the knobChanged callback for every knob i create to
look if they hit a condition in there.
i messured the execution time in the functions and i can see clearly a
dramatic increase in the time taken to create the knobs.
startup call:
search time: 0.00189313135161
clear list time: 2.67769610218e-06
list length 24
added knob time: 5.93556032982e-05
added knob time: 5.71241898797e-05
added knob time: 5.35539275006e-05
added knob time: 5.35539284101e-05
added knob time: 5.35539284101e-05
added knob time: 5.48927755517e-05
added knob time: 5.35539275006e-05
added knob time: 5.44464937775e-05
added knob time: 5.35539275006e-05
added knob time: 5.4446492868e-05
added knob time: 5.44464937775e-05
added knob time: 5.53390582354e-05
added knob time: 5.48927764612e-05
added knob time: 5.48927764612e-05
added knob time: 5.53390582354e-05
added knob time: 5.53390591449e-05
added knob time: 5.62316236028e-05
added knob time: 5.6677907196e-05
added knob time: 8.30085882626e-05
added knob time: 5.04299487147e-05
added knob time: 5.13225149916e-05
added knob time: 5.08762313984e-05
added knob time: 4.9983666031e-05
added knob time: 5.17687967658e-05
total knob time: 0.00277811001069
update call:
search time: 0.00190384213693
clear list time: 3.12397969537e-06
list length 24
added knob time: 0.0111396632883
added knob time: 0.0114480446564
added knob time: 0.0120420469739
added knob time: 0.0123955028985
added knob time: 0.0129551414448
added knob time: 0.0135629785273
added knob time: 0.0142319563429
added knob time: 0.0150205379314
added knob time: 0.0158385741797
added knob time: 0.0169823968236
added knob time: 0.0177259038564
added knob time: 0.0187371805287
added knob time: 0.0198203087202
added knob time: 0.0210083133543
added knob time: 0.0222213098223
added knob time: 0.0236030011629
added knob time: 0.0248650887297
added knob time: 0.0262856066684
added knob time: 0.0277529842924
added knob time: 0.0292618662115
added knob time: 0.0308528641535
added knob time: 0.0329334342532
added knob time: 0.0344815890521
added knob time: 0.0362542240655
total knob time: 0.502958408235
if i have around 100 nodes in my list, the time for the last knobs is over
0.5 seconds.
is there something i can do to prevent that?
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