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Re: Does CFSocket use efficient polling?

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Re: Does CFSocket use efficient polling?

Subject: Re: Does CFSocket use efficient polling?
From: Mark Pauley <email@hidden>
Date: Fri, 13 Feb 2009 16:35:57 -0800

Did you sample test #1 to see where the time is spent? Repeated appends to an NSMutableData will do a lot of memcpy's as it grows its buffer, with performance roughly O(n^2).

If that's the case, you may be able to pre-initialize your NSMutableData with the value of the Content-Length header field (when present) in -didRecieveResponse:

http://developer.apple.com/documentation/Cocoa/Reference/Foundation/Classes/NSMutableData_Class/Reference/NSMutableData.html#/ /apple_ref/occ/instm/NSMutableData/initWithCapacity:


_Mark
email@hidden


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Follow-Ups:

Re: Does CFSocket use efficient polling?
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Re: Does CFSocket use efficient polling?
From: Jeremy Wyld <email@hidden>


References:  
  >Re: Does CFSocket use efficient polling? (From: Scott Ribe <email@hidden>)
  >Re: Does CFSocket use efficient polling? (From: Josh Graessley <email@hidden>)
  >Re: Does CFSocket use efficient polling? (From: Ladd Van Tol <email@hidden>)
  >Re: Does CFSocket use efficient polling? (From: Jens Alfke <email@hidden>)




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