1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
# $Header: /cvsroot/nsnam/ns-2/indep-utils/webtrace-conv/README,v 1.2 2002/03/13 00:20:42 haoboy Exp $
1. Traces
---------
This directory contains parsers to convert 4 types of proxy traces to input
files as required by PagePool/ProxyTrace.
ucb/: UCB Home-IP trace, available at
The code is partially taken from Steven Gribble's
original trace parser.
dec/: DEC proxy trace, available at
ftp://ftp.digital.com/pub/DEC/traces/proxy/webtraces.html. The code is
partially taken from Alex Rousskov's trace parser (available at
ftp://ftp.digital.com/pub/DEC/traces/proxy/contrib/proxytrace2any.tar.gz).
epa/: EPA server trace, available at
http://ita.ee.lbl.gov/html/contrib/EPA-HTTP.html.
nlanr/: NLANR proxy trace, refreshed daily and available at:
ftp://ircache.nlanr.net/Traces/
2. Usage
--------
In any of these directories, doing a make will produce an executable
'tr-stat'. It assigns a unique integer ID to every client, server, and page
appeared in the trace, and generates two output files which can be used to
drive PagePool/ProxyTrace. It reads from standard input. Its usage is:
tr-stat MaxReqNum [Duration StartTime] < trace_file
MaxReqNum: the maximum number of requests in a trace file
Duration: the length of the trace to be converted.
Its default value is the entire trace.
StartTime: the starting time of the trace where to start conversion.
Its default value is the starting time of the first
record in the trace.
Note that the paths and libraries in these makefiles are set ad hoc. For
different installations, users have to change the paths and libraries.
The output of 'tr-stat' consists of two files: reqlog, and pglog. 'reqlog'
contains the request stream extracted from the trace, its format is:
{<time> <clientID> <serverID> <URL_ID>}
i <Duration> <Number_of_unique_URLs>
The format of pglog is
<serverID> <URL_ID> <PageSize> <AccessCount>
For an example as how to use these files with PagePool/ProxyTrace, please
look at ~ns/tcl/ex/simple-webcache-trace.tcl.
|
