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get rid of most slowdown at notebook loading....
get rid of most slowdown at notebook loading. 1) Do not setOption('mode',new_mode) on CM if new and old mode are the same. It triggert **a lot** of calculation of bounding box in the end. 2) Do **not** select cell when loading the notebook it triggers **a lot** of CM even that check visible things and so on and so forth. So add a option to add_cell_at_index not to select it 3) jQuery $.attr has some magics, but has a slight overhead on real native ELEM.setAttribute DOM method. Seem slight improvement when loads of PNGs on one page
MinRK - - Load All Authors

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handlers.py
72 lines | 2.2 KiB | text/x-python | PythonLexer
/ IPython / html / services / clusters / handlers.py
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"""Tornado handlers for cluster web service.
Authors:
* Brian Granger
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from tornado import web
from zmq.utils import jsonapi
from ...base.handlers import IPythonHandler
#-----------------------------------------------------------------------------
# Cluster handlers
#-----------------------------------------------------------------------------
class MainClusterHandler(IPythonHandler):
@web.authenticated
def get(self):
self.finish(jsonapi.dumps(self.cluster_manager.list_profiles()))
class ClusterProfileHandler(IPythonHandler):
@web.authenticated
def get(self, profile):
self.finish(jsonapi.dumps(self.cluster_manager.profile_info(profile)))
class ClusterActionHandler(IPythonHandler):
@web.authenticated
def post(self, profile, action):
cm = self.cluster_manager
if action == 'start':
n = self.get_argument('n', default=None)
if not n:
data = cm.start_cluster(profile)
else:
data = cm.start_cluster(profile, int(n))
if action == 'stop':
data = cm.stop_cluster(profile)
self.finish(jsonapi.dumps(data))
#-----------------------------------------------------------------------------
# URL to handler mappings
#-----------------------------------------------------------------------------
_cluster_action_regex = r"(?P<action>start|stop)"
_profile_regex = r"(?P<profile>[^\/]+)" # there is almost no text that is invalid
default_handlers = [
(r"/clusters", MainClusterHandler),
(r"/clusters/%s/%s" % (_profile_regex, _cluster_action_regex), ClusterActionHandler),
(r"/clusters/%s" % _profile_regex, ClusterProfileHandler),
]