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Re: Bizarre x86 segment layout problem causing select() slowdown: solved, sort of
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Re: Bizarre x86 segment layout problem causing select() slowdown: solved, sort of


  • Subject: Re: Bizarre x86 segment layout problem causing select() slowdown: solved, sort of
  • From: Jonas Maebe <email@hidden>
  • Date: Wed, 7 Feb 2007 19:49:34 +0100


On 07 Feb 2007, at 19:34, Dave Hayden wrote:

Looking at the code again, I noticed this in the socket setup code:

setsockopt(sock, SOL_SOCKET, SO_RCVBUF, (void*)32768, sizeof(int));

Shouldn't you pass the address of a variable containing the buffer size rather than the actual value? Have you tried checking the return value of that call?


It's still a bug of course if behaviour randomly changes depending on which erroneous parameter you pass (maybe the kernel doesn't deal gracefully with a wrong parameter there and uses an uninitialised value in case it's invalid).


Jonas _______________________________________________ Do not post admin requests to the list. They will be ignored. Xcode-users mailing list (email@hidden) Help/Unsubscribe/Update your Subscription: This email sent to email@hidden
  • Follow-Ups:
    • Re: Bizarre x86 segment layout problem causing select() slowdown: solved, sort of
      • From: Chris Page <email@hidden>
    • Re: Bizarre x86 segment layout problem causing select() slowdown: solved, sort of
      • From: glenn andreas <email@hidden>
References: 
 >Bizarre x86 segment layout problem causing select() slowdown (From: Dave Hayden <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Eric Albert <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Dave Hayden <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: John Daniel <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Dave Hayden <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: John Daniel <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Dave Hayden <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: John Daniel <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: John Daniel <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Shawn Erickson <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Dave Hayden <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Eric Albert <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown (From: Dave Hayden <email@hidden>)
 >Re: Bizarre x86 segment layout problem causing select() slowdown: solved, sort of (From: Dave Hayden <email@hidden>)

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