/usr/bin/llobdstat is in lustre-utils 1.8.5+dfsg-3ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 | #!/usr/bin/perl
# llobdstat is a utility that parses obdfilter statistics files
# found at proc/fs/lustre/<ostname>/stats.
# It is mainly useful to watch the statistics change over time.
my $pname = $0;
my $defaultpath = "/proc/fs/lustre";
my $obdstats = "stats";
sub usage()
{
print STDERR "Usage: $pname <ost_name> [<interval> [<count>}]\n";
print STDERR "where ost_name : ost name under $defaultpath/obdfilter\n";
print STDERR " interval : sample interaval in seconds\n";
print STDERR "example: $pname lustre-OST0000 2\n";
print STDERR "Use CTRL + C to stop statistics printing\n";
exit 1;
}
my $statspath = "None";
my $interval = 0;
my $counter = undef;
if (($#ARGV < 0) || ($#ARGV > 2)) {
usage();
} else {
if ( $ARGV[0] =~ /help$/ ) {
usage();
}
if ( -f $ARGV[0] ) {
$statspath = $ARGV[0];
} elsif ( -f "$ARGV[0]/$obdstats" ) {
$statspath = "$ARGV[0]/$obdstats";
} else {
my $st = `ls $defaultpath/obdfilter/$ARGV[0]/$obdstats 2> /dev/null`;
chop $st;
if ( -f "$st" ) {
$statspath = $st;
}
}
if ( $statspath =~ /^None$/ ) {
die "Cannot locate stat file for: $ARGV[0]\n";
}
if ($#ARGV > 0) {
$interval = $ARGV[1];
}
if ($#ARGV > 1) {
$counter = $ARGV[2];
}
}
print "$pname on $statspath\n";
my %cur;
my %last;
my $mhz = 0;
# Removed some statstics like open, close that obdfilter doesn't contain.
# To add statistics parameters one needs to specify parameter names in the
# below declarations in the same sequence.
my ($read_bytes, $write_bytes, $create, $destroy, $statfs, $punch,
$snapshot_time) = ("read_bytes", "write_bytes", "create", "destroy",
"statfs", "punch", "snapshot_time");
my @extinfo = ($create, $destroy, $statfs, $punch);
my %shortname = ($create => "cx", $destroy => "dx", $statfs => "st", $punch => "pu");
sub get_cpumhz()
{
my $cpu_freq;
my $itc_freq; # On Itanium systems use this
if (open(CPUINFO, "/proc/cpuinfo")==0) {
return;
}
while (<CPUINFO>) {
if (/^cpu MHz\s+:\s*([\d\.]+)/) { $cpu_freq=$1; }
elsif (/^itc MHz\s+:\s*([\d\.]+)/) { $itc_freq=$1; }
}
if (defined($itc_freq)) {
$mhz = $itc_freq;
} elsif (defined($cpu_freq)) {
$mhz = $cpu_freq;
} else {
$mhz = 1;
}
close CPUINFO;
}
get_cpumhz();
print "Processor counters run at $mhz MHz\n";
# read statistics from obdfilter stats file.
# This subroutine gets called after every interval specified by user.
sub readstat()
{
my $prevcount;
my @iodata;
seek STATS, 0, 0;
while (<STATS>) {
chop;
# ($name, $cumulcount, $samples, $unit, $min, $max, $sum, $sumsquare)
@iodata = split(/\s+/, $_);
my $name = $iodata[0];
$prevcount = $cur{$name};
if (defined($prevcount)) {
$last{$name} = $prevcount;
}
if ($name =~ /^read_bytes$/ || $name =~ /^write_bytes$/) {
$cur{$name} = $iodata[6];
}
elsif ($name =~ /^snapshot_time$/) {
# $cumulcount =~ /(\d+)/;
$cur{$name} = $iodata[1];
} else {
$cur{$name} = $iodata[1];
}
}
}
# process stats information read from obdfilter stats file.
# This subroutine gets called after every interval specified by user.
sub process_stats()
{
my $delta;
my $data;
my $last_time = $last{$snapshot_time};
if (!defined($last_time)) {
printf "Read: %-g, Write: %-g, create/destroy: %-g/%-g, stat: %-g, punch: %-g\n",
$cur{$read_bytes}, $cur{$write_bytes},
$cur{$create}, $cur{$destroy},
$cur{$statfs}, $cur{$punch};
if ($interval) {
print "[NOTE: cx: create, dx: destroy, st: statfs, pu: punch ]\n\n";
print "Timestamp Read-delta ReadRate Write-delta WriteRate\n";
print "--------------------------------------------------------\n";
}
} else {
my $timespan = $cur{$snapshot_time} - $last{$snapshot_time};
my $rdelta = $cur{$read_bytes} - $last{$read_bytes};
my $rrate = ($rdelta) / ($timespan * ( 1 << 20 ));
my $wdelta = $cur{$write_bytes} - $last{$write_bytes};
my $wrate = ($wdelta) / ($timespan * ( 1 << 20 ));
$rdelta = ($rdelta) / (1024 * 1024);
$wdelta = ($wdelta) / (1024 * 1024);
# This print repeats after every interval.
printf "%10lu %6.2fMB %6.2fMB/s %6.2fMB %6.2fMB/s",
$cur{$snapshot_time}, $rdelta, $rrate, $wdelta, $wrate;
$delta = $cur{$getattr} - $last{$getattr};
if ( $delta != 0 ) {
$rdelta = int ($delta/$timespan);
print " ga:$delta,$rdelta/s";
}
for $data ( @extinfo ) {
$delta = $cur{$data} - $last{$data};
if ($delta != 0) {
print " $shortname{$data}:$delta";
}
}
print "\n";
$| = 1;
}
}
#Open the obdfilter stat file with STATS
open(STATS, $statspath) || die "Cannot open $statspath: $!\n";
do {
# read the statistics from stat file.
readstat();
process_stats();
if ($interval) {
sleep($interval);
%last = %cur;
}
# Repeat the statistics printing after every "interval" specified in
# command line, up to counter times, if specified
} while ($interval && (defined($counter) ? $counter-- > 0 : 1));
close STATS;
# llobdfilter.pl ends here.
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