Disable access time

Most current operating systems use file systems with advanced functions:

rights management, logging ...

Among other things, NTFS (Windows) and ext3 (Linux) are capable of recording the date of last access to a file.

If it's very useful to control when a file is accessed, it means that for every reading file there a. .. writing disk!

Unless you absolutely need this functionality (secure servers,...), you can disable it.

Some experts believe that Linux kernel can earn up to 10% in disk performance.

1.For Windows 2000/XP/2003/Vista (NTFS only)

Command line

Go to Start> All Programs> Accessories
Right-click the Command Prompt> Run as administrator
Type the following command

fsutil behavior set disablelastaccess 1

and press the ENTER key


If no error message appears, then the command has been executed.

By the registry

Save the base register if necessary
Open the Registry Editor
Go to: HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ FileSystem

Create the variable (right-click, New, DWORD value):

NtfsDisableLastAccessUpdate with value 1

The change should take effect immediately.

2.Linux

Type

$ sudo gedit /etc/fstab

and add the options relatime nodiratime to the partition in question.

Example:

# / Etc / fstab: static file system information.
#
#
proc / proc proc defaults 0 0
/ dev/sda1 / ext3 defaults, errors = remount-ro, relatime, nodiratime 0 1
/ dev/sda2 none swap sw 0 0

Then restart for the root.

Note 1: relatime does not disable the script when file access some software need to know the date of last access. There is the noatime option, which disables all the records in the file access. nodiratime disables scripts when accessing files. Watch the mount manual for more information.

Note 2: All the Linux kernel does not have the option relatime.
In this case, use noatime.