Subject: Re: ELF slower than A_OUT?
To: Gandhi woulda smacked you <firstname.lastname@example.org>
From: Michael Richardson <email@example.com>
Date: 09/02/1999 11:05:44
>>>>> "Gandhi" == Gandhi woulda smacked you <firstname.lastname@example.org> writes:
Gandhi> I ran the tests (a.out vs. ELF) on two identical machines down to
Gandhi> the point that /usr/share was local to both machines (each had
Gandhi> their own copy), the file on which I ran the test was /etc/passwd
Gandhi> which was the same length on both machines.
But was it identical? File may have to do more work on one machine.
Gandhi> Moreover, it's startup time which is the problem, not run-time.
How can you be sure? File does very little, true, but it does do some.
Gandhi> If I passed many files on the command line, file waited for about
Gandhi> five or six seconds and then processed the files as if there were
Gandhi> no other difficulties.
Gandhi> Most of the execution time differences are nowhere near this
Gandhi> severe, but in general the ELF times are higher than the a.out
I'm disputing this, it even seems reasonable as ELF is more complicated.
Gandhi> Someone mentioned alignment issues. Anyone else have a clue?
Gandhi> On Tue, 31 Aug 1999, Michael Richardson wrote:
Gandhi> # # Try it on identical files.... #
Gandhi> Which I did.
Then why did "file" return different answers?
] Out and about in Ottawa. hmmm... beer. | firewalls [
] Michael Richardson, Sandelman Software Works, Ottawa, ON |net architect[
] email@example.com http://www.sandelman.ottawa.on.ca/ |device driver[
] panic("Just another NetBSD/notebook using, kernel hacking, security guy"); [