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Path: utzoo!watmath!clyde!bonnie!akgua!mcnc!decvax!decwrl!sun!amdahl!sjl
From: sjl@amdahl.UUCP (Steve Langdon)
Newsgroups: net.unix-wizards
Subject: Re: Relative speed of Bourne vs. C Shells - Korn is faster.
Message-ID: <1341@amdahl.UUCP>
Date: Thu, 28-Mar-85 17:57:24 EST
Article-I.D.: amdahl.1341
Posted: Thu Mar 28 17:57:24 1985
Date-Received: Mon, 1-Apr-85 03:17:30 EST
References: <216@sdcc12.UUCP> <12138@watmath.UUCP> <1339@amdahl.UUCP>
Organization: Amdahl Corp, Sunnyvale CA
Lines: 25

Rewriting the script to use ksh integer arithmetic (see below) adds the
following times.

    > Shell  -Amdahl 470 V/8-    ----Vax11/780---
    >          UTS/V (SVR2)           4.2 bsd
    >        User System Total   User System Total
    > csh    1.21  0.38   1.59    11     4    15
    >  sh    0.96  1.76   2.72    25   138   163
    > ksh    0.91  2.05   2.96    --    --    --
  new ksh    0.16  0.05   0.21    --    --    --


#!/bin/ksh
integer x=1
while (( $x < 100 )); do
	((x = $x + 1))
	if (( $x > 10 )); then
		echo Hi! $x
	fi
done
-- 
Stephen J. Langdon                  ...!{ihnp4,hplabs,sun,nsc}!amdahl!sjl

[ The article above is not an official statement from any organization
  in the known universe. ]