Welcome to Linux Knowledge Base and Tutorial
"The place where you learn linux"
The ONE Campaign to make poverty history

 Create an AccountHome | Submit News | Your Account  

Tutorial Menu
Linux Tutorial Home
Table of Contents

· Introduction to Operating Systems
· Linux Basics
· Working with the System
· Shells and Utilities
· Editing Files
· Basic Administration
· The Operating System
· The X Windowing System
· The Computer Itself
· Networking
· System Monitoring
· Solving Problems
· Security
· Installing and Upgrading
· Linux and Windows

Glossary
MoreInfo
Man Pages
Linux Topics
Test Your Knowledge

Site Menu
Site Map
FAQ
Copyright Info
Terms of Use
Privacy Info
Disclaimer
WorkBoard
Thanks
Donations
Advertising
Masthead / Impressum
Your Account

Communication
Feedback
Forums
Private Messages
Surveys

Features
HOWTOs
News Archive
Submit News
Topics
User Articles
Web Links

Google
Google


The Web
linux-tutorial.info

Who's Online
There are currently, 57 guest(s) and 0 member(s) that are online.

You are an Anonymous user. You can register for free by clicking here

  

zcav




SYNOPSIS

       zcav [-b block-size] [-c count] [-u uid-to-use:gid-to-use]
       [-g gid-to-use] [-f] file-name


DESCRIPTION

       This manual page documents briefly the zcav, program.

       Modern hard drives have a constant  rotational  speed  but
       have  varying numbers of sectors per track (outside tracks
       are longer and have more sectors). This is referred to  as
       Zoned  Constant  Angular  Velocity  (or  ZCAV).  The outer
       tracks will have a higher data transfer rate due to having
       more  sectors  per  track, these tracks generally have the
       lower track/sector numbers.

       This program tests the ZCAV performance of a  hard  drive,
       by  reading  the  entire  data on it a specified number of
       times. The file name given as the first parameter, it  can
       be  specified  as -, for standard input. This file will be
       opened as read-only and in  usual  operation  it  will  be
       /dev/hdX  or /dev/ide/host0/busX/targetY/lun0/disc depend­
       ing on whether you use devfs or not (NB operating  systems
       other than Linux will have different device names).

       The  output  should be able to be easily graphed with gnu­
       plot which is what I use to view the results.


OPTIONS

       -b     the size of the blocks to read from  disk  (default
              100M).

       -c     the number of times to read the entire disk.

       -f     the file-name for the input data. This isn't needed
              on well configured systems that have a recent Glibc
              where  you can specify the file name without the -f
              flag.

       -u     user-id to use.  When running as root  specify  the
              UID  to  run the tests as, it is not recommended to
              use root, so if you want to  run  as  root  use  -u
              root.  Also if you want to specify the group to run
              as then use the user:group format.  If you  specify
              a  user by name but no group then the primary group
              of that user will be chosen.  If you specify a user
              by  number  and  no  group  then  the group will be

                                                          zcav(1)
  




Login
Nickname

Password

Security Code
Security Code
Type Security Code


Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

Help if you can!


Amazon Wish List

Did You Know?
The Linux Tutorial can use your help.


Friends



Tell a Friend About Us

Bookmark and Share



Web site powered by PHP-Nuke

Is this information useful? At the very least you can help by spreading the word to your favorite newsgroups, mailing lists and forums.
All logos and trademarks in this site are property of their respective owner. The comments are property of their posters. Articles are the property of their respective owners. Unless otherwise stated in the body of the article, article content (C) 1994-2013 by James Mohr. All rights reserved. The stylized page/paper, as well as the terms "The Linux Tutorial", "The Linux Server Tutorial", "The Linux Knowledge Base and Tutorial" and "The place where you learn Linux" are service marks of James Mohr. All rights reserved.
The Linux Knowledge Base and Tutorial may contain links to sites on the Internet, which are owned and operated by third parties. The Linux Tutorial is not responsible for the content of any such third-party site. By viewing/utilizing this web site, you have agreed to our disclaimer, terms of use and privacy policy. Use of automated download software ("harvesters") such as wget, httrack, etc. causes the site to quickly exceed its bandwidth limitation and are therefore expressly prohibited. For more details on this, take a look here

PHP-Nuke Copyright © 2004 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.
Page Generation: 0.17 Seconds