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#!/usr/bin/perl
# Print numa statistics for all nodes
# Copyright (C) 2003,2004 Andi Kleen, SuSE Labs.
#
# numastat is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation; version
# 2.
#
# numastat is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
# You should find a copy of v2 of the GNU General Public License somewhere
# on your Linux system; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#
# Example: NUMASTAT_WIDTH=80 watch -n1 numastat
#
# output width
$WIDTH=80;
if (defined($ENV{'NUMASTAT_WIDTH'})) {
$WIDTH=$ENV{'NUMASTAT_WIDTH'};
} else {
use POSIX;
if (POSIX::isatty(fileno(STDOUT))) {
if (open(R, "resize |")) {
while (<R>) {
$WIDTH=$1 if /COLUMNS=(\d+)/;
}
close R;
}
} else {
# don't split it up for easier parsing
$WIDTH=10000000;
}
}
$WIDTH = 32 if $WIDTH < 32;
if (! -d "/sys/devices/system/node" ) {
print STDERR "sysfs not mounted or system not NUMA aware\n";
exit 1;
}
%stat = ();
$title = "";
opendir(NODES, "/sys/devices/system/node") || exit 1;
foreach $nd (readdir(NODES)) {
next unless $nd =~ /node(\d+)/;
open(STAT, "/sys/devices/system/node/$nd/numastat") ||
die "cannot open $nd: $!\n";
$title = sprintf("%16s",$nd) . $title;
@fields = ();
while (<STAT>) {
($name, $val) = split;
$stat{$name} = sprintf("%16u", $val) . $stat{$name};
push(@fields, $name);
}
close STAT;
}
closedir NODES;
$numfields = int(($WIDTH - 16) / 16);
$l = 16 * $numfields;
for ($i = 0; $i < length($title); $i += $l) {
print "\n" if $i > 0;
printf "%16s%s\n","",substr($title,$i,$l);
foreach (@fields) {
printf "%-16s%s\n",$_,substr($stat{$_},$i,$l);
}
}
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