]>
Commit | Line | Data |
---|---|---|
e143e9d8 DM |
1 | package PVE::ProcFSTools; |
2 | ||
3 | use strict; | |
4 | use POSIX; | |
5 | use Time::HiRes qw (gettimeofday); | |
6 | use IO::File; | |
7 | use PVE::Tools; | |
8 | ||
9 | my $clock_ticks = POSIX::sysconf(&POSIX::_SC_CLK_TCK); | |
10 | ||
11 | my $cpuinfo; | |
12 | ||
e143e9d8 DM |
13 | sub read_cpuinfo { |
14 | my $fn = '/proc/cpuinfo'; | |
15 | ||
16 | return $cpuinfo if $cpuinfo; | |
17 | ||
18 | my $res = { | |
8104dfe3 | 19 | user_hz => $clock_ticks, |
e143e9d8 DM |
20 | model => 'unknown', |
21 | mhz => 0, | |
22 | cpus => 1, | |
66bda4e0 | 23 | sockets => 1, |
e143e9d8 DM |
24 | }; |
25 | ||
26 | my $fh = IO::File->new ($fn, "r"); | |
27 | return $res if !$fh; | |
28 | ||
29 | my $count = 0; | |
30 | while (defined(my $line = <$fh>)) { | |
31 | if ($line =~ m/^processor\s*:\s*\d+\s*$/i) { | |
32 | $count++; | |
33 | } elsif ($line =~ m/^model\s+name\s*:\s*(.*)\s*$/i) { | |
34 | $res->{model} = $1 if $res->{model} eq 'unknown'; | |
35 | } elsif ($line =~ m/^cpu\s+MHz\s*:\s*(\d+\.\d+)\s*$/i) { | |
36 | $res->{mhz} = $1 if !$res->{mhz}; | |
e143e9d8 DM |
37 | } elsif ($line =~ m/^flags\s*:.*(vmx|svm)/) { |
38 | $res->{hvm} = 1; # Hardware Virtual Machine (Intel VT / AMD-V) | |
66bda4e0 DM |
39 | } elsif ($line =~ m/^physical id\s*:\s*(\d+)\s*$/i) { |
40 | my $sid = $1 + 1; | |
41 | $res->{sockets} = $sid if $sid > $res->{sockets}; | |
e143e9d8 | 42 | } |
66bda4e0 | 43 | |
e143e9d8 DM |
44 | } |
45 | ||
46 | $res->{cpus} = $count; | |
47 | ||
48 | $fh->close; | |
49 | ||
50 | $cpuinfo = $res; | |
51 | ||
52 | return $res; | |
53 | } | |
54 | ||
55 | sub read_proc_uptime { | |
56 | my $ticks = shift; | |
57 | ||
58 | my $line = PVE::Tools::file_read_firstline("/proc/uptime"); | |
59 | if ($line && $line =~ m|^(\d+\.\d+)\s+(\d+\.\d+)\s*$|) { | |
60 | if ($ticks) { | |
5157a3a2 | 61 | return (int($1*$clock_ticks), int($2*$clock_ticks)); |
e143e9d8 DM |
62 | } else { |
63 | return (int($1), int($2)); | |
64 | } | |
65 | } | |
66 | ||
67 | return (0, 0); | |
68 | } | |
69 | ||
70 | sub read_loadavg { | |
71 | ||
72 | my $line = PVE::Tools::file_read_firstline('/proc/loadavg'); | |
73 | ||
74 | if ($line =~ m|^(\d+\.\d+)\s+(\d+\.\d+)\s+(\d+\.\d+)\s+\d+/\d+\s+\d+\s*$|) { | |
75 | return wantarray ? ($1, $2, $3) : $1; | |
76 | } | |
77 | ||
78 | return wantarray ? (0, 0, 0) : 0; | |
79 | } | |
80 | ||
81 | my $last_proc_stat; | |
82 | ||
83 | sub read_proc_stat { | |
84 | my $res = { user => 0, nice => 0, system => 0, idle => 0 , sum => 0}; | |
85 | ||
86 | my $cpucount = 0; | |
87 | ||
88 | if (my $fh = IO::File->new ("/proc/stat", "r")) { | |
89 | while (defined (my $line = <$fh>)) { | |
90 | if ($line =~ m|^cpu\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s|) { | |
91 | $res->{user} = $1; | |
92 | $res->{nice} = $2; | |
93 | $res->{system} = $3; | |
94 | $res->{idle} = $4; | |
95 | $res->{used} = $1+$2+$3; | |
96 | $res->{iowait} = $5; | |
97 | } elsif ($line =~ m|^cpu\d+\s|) { | |
98 | $cpucount++; | |
99 | } | |
100 | } | |
101 | $fh->close; | |
102 | } | |
103 | ||
104 | $cpucount = 1 if !$cpucount; | |
105 | ||
106 | my $ctime = gettimeofday; # floating point time in seconds | |
107 | ||
108 | $res->{ctime} = $ctime; | |
109 | $res->{cpu} = 0; | |
110 | $res->{wait} = 0; | |
111 | ||
112 | $last_proc_stat = $res if !$last_proc_stat; | |
113 | ||
114 | my $diff = ($ctime - $last_proc_stat->{ctime}) * $clock_ticks * $cpucount; | |
115 | ||
116 | if ($diff > 1000) { # don't update too often | |
117 | my $useddiff = $res->{used} - $last_proc_stat->{used}; | |
118 | $useddiff = $diff if $useddiff > $diff; | |
119 | $res->{cpu} = $useddiff/$diff; | |
120 | my $waitdiff = $res->{iowait} - $last_proc_stat->{iowait}; | |
121 | $waitdiff = $diff if $waitdiff > $diff; | |
122 | $res->{wait} = $waitdiff/$diff; | |
123 | $last_proc_stat = $res; | |
124 | } else { | |
125 | $res->{cpu} = $last_proc_stat->{cpu}; | |
126 | $res->{wait} = $last_proc_stat->{wait}; | |
127 | } | |
128 | ||
129 | return $res; | |
130 | } | |
131 | ||
5157a3a2 | 132 | sub read_proc_pid_stat { |
e143e9d8 DM |
133 | my $pid = shift; |
134 | ||
135 | my $statstr = PVE::Tools::file_read_firstline("/proc/$pid/stat"); | |
136 | ||
5157a3a2 DM |
137 | 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+/) { |
138 | return { | |
139 | status => $1, | |
140 | utime => $3, | |
141 | stime => $4, | |
142 | starttime => $7, | |
143 | vsize => $8, | |
144 | rss => $9 * 4096, | |
145 | }; | |
e143e9d8 DM |
146 | } |
147 | ||
5157a3a2 DM |
148 | return undef; |
149 | } | |
150 | ||
151 | sub check_process_running { | |
152 | my ($pid, $pstart) = @_; | |
153 | ||
154 | # note: waitpid only work for child processes, but not | |
155 | # for processes spanned by other processes. | |
156 | # kill(0, pid) return succes for zombies. | |
157 | # So we read the status form /proc/$pid/stat instead | |
158 | ||
159 | my $info = read_proc_pid_stat($pid); | |
160 | ||
5399d422 | 161 | return $info && (!$pstart || ($info->{starttime} eq $pstart)) && ($info->{status} ne 'Z') ? $info : undef; |
5157a3a2 DM |
162 | } |
163 | ||
164 | sub read_proc_starttime { | |
165 | my $pid = shift; | |
166 | ||
167 | my $info = read_proc_pid_stat($pid); | |
168 | return $info ? $info->{starttime} : 0; | |
e143e9d8 DM |
169 | } |
170 | ||
171 | sub read_meminfo { | |
172 | ||
173 | my $res = { | |
174 | memtotal => 0, | |
175 | memfree => 0, | |
176 | memused => 0, | |
177 | swaptotal => 0, | |
178 | swapfree => 0, | |
179 | swapused => 0, | |
180 | }; | |
181 | ||
182 | my $fh = IO::File->new ("/proc/meminfo", "r"); | |
183 | return $res if !$fh; | |
184 | ||
185 | my $d = {}; | |
186 | while (my $line = <$fh>) { | |
187 | if ($line =~ m/^(\S+):\s+(\d+)\s*kB/i) { | |
188 | $d->{lc ($1)} = $2 * 1024; | |
189 | } | |
190 | } | |
191 | close($fh); | |
192 | ||
193 | $res->{memtotal} = $d->{memtotal}; | |
194 | $res->{memfree} = $d->{memfree} + $d->{buffers} + $d->{cached}; | |
195 | $res->{memused} = $res->{memtotal} - $res->{memfree}; | |
196 | ||
197 | $res->{swaptotal} = $d->{swaptotal}; | |
198 | $res->{swapfree} = $d->{swapfree}; | |
199 | $res->{swapused} = $res->{swaptotal} - $res->{swapfree}; | |
200 | ||
201 | return $res; | |
202 | } | |
203 | ||
204 | # memory usage of current process | |
205 | sub read_memory_usage { | |
206 | ||
207 | my $res = { size => 0, resident => 0, shared => 0 }; | |
208 | ||
209 | my $ps = 4096; | |
210 | ||
211 | my $line = PVE::Tools::file_read_firstline("/proc/$$/statm"); | |
212 | ||
213 | if ($line =~ m/^(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)\s+/) { | |
214 | $res->{size} = $1*$ps; | |
215 | $res->{resident} = $2*$ps; | |
216 | $res->{shared} = $3*$ps; | |
217 | } | |
218 | ||
219 | return $res; | |
220 | } | |
221 | ||
222 | sub read_proc_net_dev { | |
223 | ||
224 | my $res = {}; | |
225 | ||
226 | my $fh = IO::File->new ("/proc/net/dev", "r"); | |
227 | return $res if !$fh; | |
228 | ||
229 | while (defined (my $line = <$fh>)) { | |
230 | if ($line =~ m/^\s*(.*):\s*(\d+)\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+\d+\s+(\d+)\s+/) { | |
231 | $res->{$1} = { | |
232 | receive => $2, | |
233 | transmit => $3, | |
234 | }; | |
235 | } | |
236 | } | |
237 | ||
238 | close($fh); | |
239 | ||
240 | return $res; | |
241 | } | |
242 | ||
243 | 1; |