[Python-Dev] how to debug httplib slowness (original) (raw)

Simon Cross hodgestar+pythondev at gmail.com
Fri Sep 4 13:28:35 CEST 2009

On Fri, Sep 4, 2009 at 1:11 PM, Chris Withers<chris at simplistix.co.uk> wrote:

Am I right in reading this as most of the time is being spent in httplib's HTTPResponse.readchunked and none of the methods it calls?

If so, is there a better way that a bunch of print statements to find where in that method the time is being spent?

Well, since the source for _read_chunked includes the comment

    # XXX This accumulates chunks by repeated string concatenation,
    # which is not efficient as the number or size of chunks gets big.

you might gain some speed improvement with minimal effort by gathering the read data chunks into a list and then returning "".join(chunks) at the end.

Schiavo Simon

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