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Article #41494

Performance problem or bad installation?

#41494
From: mkearney
Date: Fri, 22 Mar 1996 00:00
16 lines
1402 bytes
We've started migrating to gcc 2.7.0 having been happily running 2.6.3
for quite a while. We run our gcc on pc's running linux installed from
slackware. The motivation for the move is to start exploiting the presumed
benefits of ELF format. HOWEVER, with the new gcc there appears to have
been a precipitous drop in performance. A compilation which formerly took
10 seconds now takes 5 minutes. Watching the system using top, the time
is spent in   as   . The cpu is virtually idle, there is no paging, there
is plenty of swap space and memory (64 M machine). I've rebuilt the kernel.
Actually the 5 minute number is from after rebuilding the kernel. The
performance was initially even worse. I've rebuilt the compiler and binutils
all to no effect. 

Has anyone experienced a comparable problem and solved it? Is this a gcc
problem or a linux problem? Both perhaps?

-m
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From: <mkearney@speedsim.com>
Subject: Performance problem or bad installation?
Date: 1996/03/22
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