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doc: free.1 total memory doesn't include reserved memory

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Updated the definition of total, because its not *all* of
the installed memory but close to it.

References:
 procps-ng/procps#247

Signed-off-by: Craig Small <csmall@dropbear.xyz>
This commit is contained in:
Craig Small 2023-01-16 17:29:36 +11:00
parent 647a2aa9e1
commit dbde44b528
1 changed files with 3 additions and 2 deletions
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man/free.1
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@ -2,7 +2,7 @@
.\" This page Copyright (C) 1993 Matt Welsh, mdw@sunsite.unc.edu. .\" This page Copyright (C) 1993 Matt Welsh, mdw@sunsite.unc.edu.
.\" Long options where added at April 15th, 2011. .\" Long options where added at April 15th, 2011.
.\" Freely distributable under the terms of the GPL .\" Freely distributable under the terms of the GPL
.TH FREE 1 "2022-06-25" "procps-ng" "User Commands" .TH FREE 1 "2023-01-16" "procps-ng" "User Commands"
.SH NAME .SH NAME
free \- Display amount of free and used memory in the system free \- Display amount of free and used memory in the system
.SH SYNOPSIS .SH SYNOPSIS
@ -16,7 +16,8 @@ information is gathered by parsing /proc/meminfo. The displayed
columns are: columns are:
.TP .TP
\fBtotal\fR \fBtotal\fR
Total installed memory (MemTotal and SwapTotal in /proc/meminfo) Total usable memory (MemTotal and SwapTotal in /proc/meminfo). This includes
the physical and swap memory minus a few reserved bits and kernel binary code.
.TP .TP
\fBused\fR \fBused\fR
Used or unavailable memory (calculated as \fBtotal\fR - \fBavailable\fR) Used or unavailable memory (calculated as \fBtotal\fR - \fBavailable\fR)