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: glenn andreas <email@hidden>
• Date: Wed, 7 Feb 2007 12:56:40 -0600
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On Feb 7, 2007, at 12:49 PM, Jonas Maebe wrote:

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).

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