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proc.5: /proc/sys/fs/inode-max went away in Linux 2.4 

Also, the 'preshrink' field in /proc/sys/fs/inode-state became
a dummy value in Linux 2.4.

See https://bugzilla.kernel.org/show_bug.cgi?id=60836

Reported-by: Marko Myllynen <myllynen@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2013-09-04 10:00:05 +02:00
parent ac8727b68c
commit 7ab222df40
1 changed files with 13 additions and 16 deletions
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29
man5/proc.5
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@ -2497,15 +2497,6 @@ The kernel constant
imposes an upper limit on the value that may be placed in
.IR file-max .
If you increase
.IR /proc/sys/fs/file-max ","
be sure to increase
.I /proc/sys/fs/inode-max
to 3-4 times the new
value of
.IR /proc/sys/fs/file-max ","
or you will run out of inodes.
Privileged processes
.RB ( CAP_SYS_ADMIN )
can override the
@ -2531,15 +2522,18 @@ a past peak in the usage of open file handles.
Since Linux 2.6, the kernel does deallocate freed file handles,
and the "free file handles" value is always zero.
.TP
.I /proc/sys/fs/inode-max
.IR /proc/sys/fs/inode-max " (only present until Linux 2.2)"
This file contains the maximum number of in-memory inodes.
On some (2.4) systems, it may not be present.
This value should be 3-4 times larger
than the value in
.IR file-max ,
since \fIstdin\fP, \fIstdout\fP
and network sockets also need an inode to handle them.
When you regularly run out of inodes, you need to increase this value.
Starting with Linux 2.4,
there is no longer a static limit on the number of inodes,
and this file is removed.
.TP
.I /proc/sys/fs/inode-nr
This file contains the first two values from
@ -2551,20 +2545,23 @@ contains seven numbers:
.IR nr_inodes ,
.IR nr_free_inodes ,
.IR preshrink ,
and four dummy values.
and four dummy values (always zero).
.I nr_inodes
is the number of inodes the system has allocated.
This can be slightly more than
.I inode-max
because Linux allocates them one page full at a time.
.\" This can be slightly more than
.\" .I inode-max
.\" because Linux allocates them one page full at a time.
.I nr_free_inodes
represents the number of free inodes.
.I preshrink
is nonzero when the
.I nr_inodes
>
.I inode-max
and the system needs to prune the inode list instead of allocating more.
and the system needs to prune the inode list instead of allocating more;
since Linux 2.4, this field is a dummy value (always zero).
.TP
.IR /proc/sys/fs/inotify " (since Linux 2.6.13)"
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