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这是unix网络编程一书的源代码希望能对大家的学习提供一种便利

From [e-mail]  Wed Apr 22 19:49:55 1998
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Date: Wed, 22 Apr 1998 21:49:46 -0500 (CDT)
From: Bob Friesenhahn <[e-mail]>
X-Sender: bfriesen@scooby
To: "W. Richard Stevens" <[e-mail]>
Subject: Re: Book Review
In-Reply-To: <[e-mail]>
Message-ID: <Pine.GSO.3.95.980422213657.567C-100000@scooby>
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Status: ORr

Richard,

I tried running your benchmark code under Solaris 2.6 and ran into some
peculiar problems with bw_lat.sh.  It seems that the shell was not happy about
something.  At any rate, I made a few edits (including adding a missing 
argument to the doors benchmark) and things seem to run mostly ok now.  I
notice that the doors benchmark returns an error sometimes.  I also notice
that when running the bw_svmsg benchmark, the benchmark hangs if xfersize is
set greater than 2048 (a Solaris limit according to your draft book).

I am attaching a diff containing my modifications.

Bob
======================================
Bob Friesenhahn
[e-mail]
http://www.cyberramp.net/~bfriesen

--- bw_lat.sh.old	Wed Apr 22 21:40:56 1998
+++ bw_lat.sh	Wed Apr 22 21:31:37 1998
@@ -1,13 +1,14 @@
-# !/usr/dt/bin/dtksh
-# !/bin/ksh
-# set -x
+#!/usr/dt/bin/dtksh
+#!/bin/ksh
+#set -x
 
 # Requires a ksh newer than 11/16/88 because it uses floating point
 # arithmetic and printf.  /usr/dt/bin/dtksh on Solaris and Digital Unix
 # is such a beast, as are some vendor's ksh93 binary.
 # /usr/dt/bin/dtksh on Digital Unix 4.0B appears brain dead.
 
-float sum=0.0 usec=0.0
+float sum=0.0
+float usec=0.0
 
 function doit
 {
@@ -69,7 +70,7 @@
 
 if [ -x bw_svmsg ]
 then
-	for xfersize in 1024 2048 4096 8192 16384
+	for xfersize in 1024 2048 #4096 8192 16384
 	do
 		for i in 1 2 3 4 5
 		do
@@ -116,7 +117,7 @@
 then
 	for i in 1 2 3 4 5
 	do
-		doit "lat_door 10000"
+		doit "lat_door /tmp/bench 10000"
 	done
 	echo "*****"
 	average_lat 5