minhtrannhat/os161
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial Spring 2016 commit.

Browse Source
This commit is contained in:
Geoffrey Challen
2015-12-23 00:50:04 +00:00
commit cafa9f5690
732 changed files with 92195 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
man/testbin/dirconc.html Normal file
View File

@@ -0,0 +1,90 @@
<!--
Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009, 2013
The President and Fellows of Harvard College.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the University nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
-->
<html>
<head>
<title>dirconc</title>
<link rel="stylesheet" type="text/css" media="all" href="../man.css">
</head>
<body bgcolor=#ffffff>
<h2 align=center>dirconc</h2>
<h4 align=center>OS/161 Reference Manual</h4>
<h3>Name</h3>
<p>
dirconc - concurrent file system test
</p>
<h3>Synopsis</h3>
<p>
<tt>/testbin/dirconc</tt> <em>path</em> [<em>randomseed</em>]
</p>
<h3>Description</h3>
<p>
<tt>dirconc</tt> does random directory operations from many processes
concurrently. This is a fairly difficult stress test as it exercises
cross-directory rename. Quite a number of real-world systems have
failed to handle it or larger/longer builds of it.
</p>
<p>
It does its work in a subdirectory of <em>path</em>, so you can run it
against whatever filesystem you prefer.
</p>
<p>
If your system survives a <tt>dirconc</tt> run, be sure to check the
integrity of the filesystem as well. It's not uncommon for
<tt>dirconc</tt> to provoke filesystem corruption.
</p>
<h3>Requirements</h3>
<p>
<tt>dirconc</tt> uses the following system calls:
<ul>
<li> <A HREF=../syscall/getpid.html>getpid</A>
<li> <A HREF=../syscall/fork.html>fork</A>
<li> <A HREF=../syscall/waitpid.html>waitpid</A>
<li> <A HREF=../syscall/mkdir.html>mkdir</A>
<li> <A HREF=../syscall/rmdir.html>rmdir</A>
<li> <A HREF=../syscall/chdir.html>chdir</A>
<li> <A HREF=../syscall/rename.html>rename</A>
<li> <A HREF=../syscall/write.html>write</A>
<li> <A HREF=../syscall/_exit.html>_exit</A>
</ul>
</p>
<p>
<tt>dirconc</tt> should work properly on SFS once the file system
assignment is complete. It won't do much of interest on emufs,
however.
</p>
</body>
</html>