]>
git.proxmox.com Git - pve-common.git/blob - data/PVE/ProcFSTools.pm
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1 package PVE
::ProcFSTools
;
5 use Time
::HiRes qw
(gettimeofday
);
9 my $clock_ticks = POSIX
::sysconf
(&POSIX
::_SC_CLK_TCK
);
14 my $fn = '/proc/cpuinfo';
16 return $cpuinfo if $cpuinfo;
19 user_hz
=> $clock_ticks,
25 my $fh = IO
::File-
>new ($fn, "r");
29 while (defined(my $line = <$fh>)) {
30 if ($line =~ m/^processor\s*:\s*\d+\s*$/i) {
32 } elsif ($line =~ m/^model\s+name\s*:\s*(.*)\s*$/i) {
33 $res->{model
} = $1 if $res->{model
} eq 'unknown';
34 } elsif ($line =~ m/^cpu\s+MHz\s*:\s*(\d+\.\d+)\s*$/i) {
35 $res->{mhz
} = $1 if !$res->{mhz
};
36 } elsif ($line =~ m/^flags\s*:.*(vmx|svm)/) {
37 $res->{hvm
} = 1; # Hardware Virtual Machine (Intel VT / AMD-V)
41 $res->{cpus
} = $count;
50 sub read_proc_uptime
{
53 my $line = PVE
::Tools
::file_read_firstline
("/proc/uptime");
54 if ($line && $line =~ m
|^(\d
+\
.\d
+)\s
+(\d
+\
.\d
+)\s
*$|) {
56 return (int($1*$clock_ticks), int($2*$clock_ticks));
58 return (int($1), int($2));
67 my $line = PVE
::Tools
::file_read_firstline
('/proc/loadavg');
69 if ($line =~ m
|^(\d
+\
.\d
+)\s
+(\d
+\
.\d
+)\s
+(\d
+\
.\d
+)\s
+\d
+/\d
+\s
+\d
+\s
*$|) {
70 return wantarray ?
($1, $2, $3) : $1;
73 return wantarray ?
(0, 0, 0) : 0;
79 my $res = { user
=> 0, nice
=> 0, system => 0, idle
=> 0 , sum
=> 0};
83 if (my $fh = IO
::File-
>new ("/proc/stat", "r")) {
84 while (defined (my $line = <$fh>)) {
85 if ($line =~ m
|^cpu\s
+(\d
+)\s
+(\d
+)\s
+(\d
+)\s
+(\d
+)\s
+(\d
+)\s
|) {
90 $res->{used
} = $1+$2+$3;
92 } elsif ($line =~ m
|^cpu\d
+\s
|) {
99 $cpucount = 1 if !$cpucount;
101 my $ctime = gettimeofday
; # floating point time in seconds
103 $res->{ctime
} = $ctime;
107 $last_proc_stat = $res if !$last_proc_stat;
109 my $diff = ($ctime - $last_proc_stat->{ctime
}) * $clock_ticks * $cpucount;
111 if ($diff > 1000) { # don't update too often
112 my $useddiff = $res->{used
} - $last_proc_stat->{used
};
113 $useddiff = $diff if $useddiff > $diff;
114 $res->{cpu
} = $useddiff/$diff;
115 my $waitdiff = $res->{iowait
} - $last_proc_stat->{iowait
};
116 $waitdiff = $diff if $waitdiff > $diff;
117 $res->{wait} = $waitdiff/$diff;
118 $last_proc_stat = $res;
120 $res->{cpu
} = $last_proc_stat->{cpu
};
121 $res->{wait} = $last_proc_stat->{wait};
127 sub read_proc_pid_stat
{
130 my $statstr = PVE
::Tools
::file_read_firstline
("/proc/$pid/stat");
132 if ($statstr && $statstr =~ m/^$pid \(.*\) (\S) (-?\d+) -?\d+ -?\d+ -?\d+ -?\d+ \d+ \d+ \d+ \d+ \d+ (\d+) (\d+) (-?\d+) (-?\d+) -?\d+ -?\d+ -?\d+ 0 (\d+) (\d+) (-?\d+) \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ -?\d+ -?\d+ \d+ \d+ \d+/) {
146 sub check_process_running
{
147 my ($pid, $pstart) = @_;
149 # note: waitpid only work for child processes, but not
150 # for processes spanned by other processes.
151 # kill(0, pid) return succes for zombies.
152 # So we read the status form /proc/$pid/stat instead
154 my $info = read_proc_pid_stat
($pid);
156 return $info && ($info->{starttime
} eq $pstart) && ($info->{status
} ne 'Z') ?
$info : undef;
159 sub read_proc_starttime
{
162 my $info = read_proc_pid_stat
($pid);
163 return $info ?
$info->{starttime
} : 0;
177 my $fh = IO
::File-
>new ("/proc/meminfo", "r");
181 while (my $line = <$fh>) {
182 if ($line =~ m/^(\S+):\s+(\d+)\s*kB/i) {
183 $d->{lc ($1)} = $2 * 1024;
188 $res->{memtotal
} = $d->{memtotal
};
189 $res->{memfree
} = $d->{memfree
} + $d->{buffers
} + $d->{cached
};
190 $res->{memused
} = $res->{memtotal
} - $res->{memfree
};
192 $res->{swaptotal
} = $d->{swaptotal
};
193 $res->{swapfree
} = $d->{swapfree
};
194 $res->{swapused
} = $res->{swaptotal
} - $res->{swapfree
};
199 # memory usage of current process
200 sub read_memory_usage
{
202 my $res = { size
=> 0, resident
=> 0, shared
=> 0 };
206 my $line = PVE
::Tools
::file_read_firstline
("/proc/$$/statm");
208 if ($line =~ m/^(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+/) {
209 $res->{size
} = $1*$ps;
210 $res->{resident
} = $2*$ps;
211 $res->{shared
} = $3*$ps;
217 sub read_proc_net_dev
{
221 my $fh = IO
::File-
>new ("/proc/net/dev", "r");
224 while (defined (my $line = <$fh>)) {
225 if ($line =~ m/^\s*(.*):\s*(\d+)\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+(\d+)\s+/) {