Red Hat ENTERPRISE LINUX 4.5.0 Reference Manual page 99

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If RAID support is compiled into the kernel, a
available with at least two files in it:
determine the acceleration of RAID devices for I/O intensive tasks, such as resyncing the disks.
3.9.2.
/proc/sys/fs/
This directory contains an array of options and information concerning various aspects of the file
system, including quota, file handle, inode, and dentry information.
The
directory is used to provide kernel support for miscellaneous binary formats.
binfmt_misc/
The important files in
/proc/sys/fs/
— Provides the status of the directory cache. The file looks similar to the
dentry-state
following:
57411 52939 45 0 0 0
The first number reveals the total number of directory cache entries, while the second number
displays the number of unused entries. The third number tells the number of seconds
between when a directory has been freed and when it can be reclaimed, and the fourth
measures the pages currently requested by the system. The last two numbers are not used
and display only zeros.
— Lists the maximum number of cached disk quota entries.
dquot-nr
— Lists the maximum number of file handles that the kernel allocates. Raising the
file-max
value in this file can resolve errors caused by a lack of available file handles.
— Lists the number of allocated file handles, used file handles, and the maximum
file-nr
number of file handles.
and
overflowgid
overflowuid
use with file systems that only support 16-bit group and user IDs.
— Controls the maximum number of superblocks available.
super-max
— Displays the current number of superblocks in use.
super-nr
3.9.3.
/proc/sys/kernel/
This directory contains a variety of different configuration files that directly affect the operation of
the kernel. Some of the most important files include:
— Controls the suspension of process accounting based on the percentage of free
acct
/proc/sys/dev/raid/
and
speed_limit_min
include:
— Defines the fixed group ID and user ID, respectively, for
directory becomes
. These settings
speed_limit_max
/proc/sys/
75

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