Commit 0fb31c06 authored by Jim Fulton's avatar Jim Fulton

Simplified code to get a small reduction in CPU time for object loads.

parent 7a240a29
...@@ -279,26 +279,9 @@ class SizedMessageAsyncConnection(asyncore.dispatcher): ...@@ -279,26 +279,9 @@ class SizedMessageAsyncConnection(asyncore.dispatcher):
else: else:
size += self.__message_output(message, output) size += self.__message_output(message, output)
# Accumulate output into a single string so that we avoid
# multiple send() calls, but avoid accumulating too much v = "".join(output)
# data. If we send a very small string and have more data del output[:]
# to send, we will likely incur delays caused by the
# unfortunate interaction between the Nagle algorithm and
# delayed acks. If we send a very large string, only a
# portion of it will actually be delivered at a time.
l = 0
for i in range(len(output)):
l += len(output[i])
if l > SEND_SIZE:
break
i += 1
# It is very unlikely that i will be 1.
v = "".join(output[:i])
# Note: "output" usually contains the output not yet sent
# The "del" below breaks this invariant temporarily.
# We must ensure its satisfaction again when we leave the loop
del output[:i]
try: try:
n = self.send(v) n = self.send(v)
...@@ -310,8 +293,8 @@ class SizedMessageAsyncConnection(asyncore.dispatcher): ...@@ -310,8 +293,8 @@ class SizedMessageAsyncConnection(asyncore.dispatcher):
break # we couldn't write anything break # we couldn't write anything
raise raise
if n < l: if n < len(v):
output.insert(0, v[n:]) output.append(v[n:])
break # we can't write any more break # we can't write any more
def handle_close(self): def handle_close(self):
......
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