Re: Bizarre x86 segment layout problem causing select() slowdown: solved, sort of
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: Eric Albert <email@hidden>
- Date: Wed, 7 Feb 2007 21:11:27 -0800
On Feb 7, 2007, at 12:53 PM, Steve Sisak wrote:
At 11:22 AM -0800 2/7/07, Dave Hayden wrote:
On Feb 7, 2007, at 10:56 AM, glenn andreas wrote:
32768 ends up being smack in the middle of the __TEXT segment, so
whatever is at that address is part of the program. Thus adding
dummy routines will change what part of the program that points
to, and thus alter the behavior.
Yeah, and when it's at that "magic" value, the contents of (int*)
32768 is 583, what I was seeing returned from read().
Well, I'm going to go crawl under a rock now.. Thanks for your
help, everyone.
Someone really should collect this thread up into a "Kon and Bal's
Puzzle Page".
This has been an entertaining saga to follow.
I'll second that. Dave, thanks for a fascinating problem and for
adding additional details at the right rate to remind lots of us of
those columns. :)
-Eric
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