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[/] [trunk/] [modules/] [system/] [platform/] [linux.pm] - Blame information for rev 21

 

Line No. Rev Author Line
11simandlpackage HotSaNICmod::OSdep;
2 
3use RRDs;
4 
5eval { require "platform/syssnmp.pm"; };
6$NO_SNMP=1 if($@);
7 
8# return module version
9#
10sub version {
11 ($VERSION = '$Revision: 1.15 $') =~ s/.*(\d+\.\d+).*/$1/;
12 return "$^O.pm $VERSION";
13 }
14 
15# sample data
16#
17sub sample {
18 my %args=@_;
19 if(!defined($NO_SNMP)) {
20 foreach ( keys(%args) ) {
21 syssnmp::do_snmp($args{$_},$args{VARDIR}) if(/HOST/);
22 }
23 }
24 
25 @sections = split " ", ($args{SECTIONS});
26 foreach (@sections){
27 if ($_ eq "cpu") {read_cpu(%args)}
28 elsif ($_ eq "load") {read_load(%args)}
29 elsif ($_ eq "proc") {read_proc(%args)}
30 elsif ($_ eq "mem") {read_mem(%args)}
31 elsif ($_ eq "users") {read_users(%args)}
32 elsif ($_ eq "int") {read_interrupts(%args)}
33 elsif ($_ eq "uptime") {read_uptime(%args)}
34 }
35 
36 }
37 
38# users.rrd -> tty pty pts
39# cpu.rrd -> cpuusr cpusys cpunic cpuidl
40# load.rrd -> load15 load5 load1
41# proc.rrd -> procslp procrun proczmb procstp
42# mem.rrd (Linux) -> memfre memshr membuf memcac swpfre swpuse
43 
44#####################################################################################
45# build CPU statistics
46# in /proc/stat there is a CPU entry which provides us with the
47# number of ticks the CPU was in all states ( user nice system idle )
48# We simply have to gather this information and calculate the actual percentage :)
49# To do this we have to remember the last read values of course!
50#
51sub read_cpu {
52 my %args=@_;
53 my $multicpu=0;
54 
55 # read actual state
56 open(IN,"/proc/stat");
57 while(<IN>) {
58 chomp;
59 if( index($_,"cpu") >=0 ) {
60 ($cpu, $cpu1, $cpu2, $cpu3, $cpu4)=split;
61 $cpu1{$cpu}=$cpu1;
62 $cpu2{$cpu}=$cpu2;
63 $cpu3{$cpu}=$cpu3;
64 $cpu4{$cpu}=$cpu4;
65 $cpu5{$cpu}=0;
66 $cpu1old{$cpu}=0;
67 $cpu2old{$cpu}=0;
68 $cpu3old{$cpu}=0;
69 $cpu4old{$cpu}=0;
70 $cpu5old{$cpu}=0;
71 if ($cpu eq "cpu1") { $multicpu=1; }
72 }
73 }
74 close(IN);
75 
76 # read last state and store actual state
77 # usr nice sys idle int
78 my $DATFILE=$args{VARDIR}."/cpu.dat";
79 if ( -e $DATFILE ) {
80 open(CPU,$DATFILE);
81 while (<CPU>) {
82 $line=$_." 0 0 0 0 0 0";
83 ($cpu, $cpu1old, $cpu2old, $cpu3old, $cpu4old, $cpu5old)=split / /,$line;
84 
85 if ($cpu !~ /cpu/) {
86 $cpu5old=$cpu4old;
87 $cpu4old=$cpu3old;
88 $cpu3old=$cpu2old;
89 $cpu2old=$cpu1old;
90 $cpu1old=$cpu;
91 $cpu="cpu";
92 }
93 
94 $cpu1old{$cpu}=$cpu1old;
95 $cpu2old{$cpu}=$cpu2old;
96 $cpu3old{$cpu}=$cpu3old;
97 $cpu4old{$cpu}=$cpu4old;
98 $cpu5old{$cpu}=$cpu5old;
99 }
100 close(CPU);
101 }
102 
103 open(CPU,">".$DATFILE);
104 
105 foreach $cpu (keys %cpu1) {
106 print CPU $cpu." ".$cpu1{$cpu}." ".$cpu2{$cpu}." ".$cpu3{$cpu}." ".$cpu4{$cpu}." ".$cpu5{$cpu}."\n";
107 
108# calculate everything....
109#
110 
111 $all{$cpu}=($cpu1{$cpu}+$cpu2{$cpu}+$cpu3{$cpu}+$cpu4{$cpu}+$cpu5{$cpu})-($cpu1old{$cpu}+$cpu2old{$cpu}+$cpu3old{$cpu}+$cpu4old{$cpu}+$cpu5old{$cpu});
112 
113 $cpuusr{$cpu}=($cpu1{$cpu}-$cpu1old{$cpu})/$all{$cpu};
114 $cpunic{$cpu}=($cpu2{$cpu}-$cpu2old{$cpu})/$all{$cpu};
115 $cpusys{$cpu}=($cpu3{$cpu}-$cpu3old{$cpu})/$all{$cpu};
116 $cpuidl{$cpu}=($cpu4{$cpu}-$cpu4old{$cpu})/$all{$cpu};
117 $cpuint{$cpu}=($cpu5{$cpu}-$cpu5old{$cpu})/$all{$cpu};
118 
119# store data
120#
121 if ( ! -e "rrd/".$cpu.".rrd" ) { system("./makerrd",$cpu); }
122 RRDs::update "rrd/".$cpu.".rrd", time.":".$cpuusr{$cpu}.":".$cpunic{$cpu}.":".$cpusys{$cpu}.":".$cpuidl{$cpu};
123 if ($ERROR = RRDs::error) { print time," ",$args{MODNAME},": unable to update cpu.rrd: $ERROR\n"; }
124 
125# on single-cpu machines only the global database has to be updated.
126#
127 last if ($multicpu==0);
128 
129 }
130 close(CPU);
131 }
132 
133 
134 
135#####################################################################################
136# here we go with the load-average value ...
137#
138sub read_load {
139 my %args=@_;
140 open(IN,"/proc/loadavg"); ($load1,$load5,$load15)=split(/ /,<IN>); close(IN);
141 
142 if ( ! -e "rrd/load.rrd" ) { system("./makerrd","load") }
143 RRDs::update "rrd/load.rrd", time.":".$load15.":".$load5.":".$load1;
144 if ($ERROR = RRDs::error) { print time," ",$args{MODNAME},": unable to update load.rrd: $ERROR\n"; }
145 }
146 
147 
148 
149#####################################################################################
150# now the processes. We have to check how many processes are sleeping,
151# running, zombieng spwapped to disc or stopped. To do this we simply
152# have to walk through the /proc tree, check all "stat" files of each
153# process-id subdir and increment the according state-counter.
154#
155sub read_proc {
156 my %args=@_;
157 ($procslp,$procrun,$proczmb,$procstp,$procdsc)=(0,0,0,0,0);
158 opendir (DIR,"/proc");@dir=readdir (DIR);closedir(DIR);
159 foreach $entry (@dir) {
160 # check if entry is a numeric one
161 if (($entry =~ /^\d+$/) && ( -e "/proc/$entry/stat" )) {
162 open (STAT,"/proc/$entry/stat");$_=<STAT>;close(STAT);
163 if (index($_," S ") >=0 ) { $procslp++ }
164 elsif (index($_," D ") >=0 ) { $procdsc++ }
165 elsif (index($_," R ") >=0 ) { $procrun++ }
166 elsif (index($_," Z ") >=0 ) { $proczmb++ }
167 elsif (index($_," T ") >=0 ) { $procstp++ }
168 }
169 }
170 
171 if ( ! -e "rrd/proc.rrd" ) { system("./makerrd","proc") }
172 RRDs::update "rrd/proc.rrd", time.":".$procslp.":".$procrun.":".$proczmb.":".$procstp.":".$procdsc;
173 if ($ERROR = RRDs::error) { print time," ",$args{MODNAME},": nable to update proc.rrd: $ERROR\n"; }
174 }
175 
176#####################################################################################
177# read users stats
178#
179sub read_users {
180 my %args=@_;
181 
182 
183 # build users-table first
184 #
185 my $command="/usr/bin/who";
186 open FILE,"$command|" || print time," ",$MODNAME,": unable to run '$command': $!\n";
187 my @users=(<FILE>);
188 close FILE;
189 
190 ($tty,$pty,$pts)=(0,0,0);
191 foreach (@users) {
192 # print $_;
193 if (index($_," tty") >=0 ) { $tty++; }
194 elsif (index($_," pty") >=0 ) { $pty++; }
195 elsif (index($_," pts") >=0 ) { $pts++; }
196 }
197 
198 if ( ! -e "rrd/users.rrd" ) { system("./makerrd","users") }
199 RRDs::update "rrd/users.rrd", time.":".$tty.":".$pty.":".$pts;
200 if ($ERROR = RRDs::error) { print time," ",$args{MODNAME},": nable to update users.rrd: $ERROR\n"; }
201 }
202 
203####################################################################################
204# here we go with the memory and swapfile statistics...
205#
206sub read_mem {
207 
208 my %args=@_;
209 my $KERNEL=HotSaNICparser::identify_kernel();
210 
211 if ( ! -e "rrd/mem.rrd" ) { system("./makerrd","mem") }
212 open(IN,"/proc/meminfo");
213 while(<IN>) {
214 chomp;
215 if (index($_,"Mem:")>=0) { (undef,$memtot,undef,$memfre,$memshr,$membuf,$memcac)=split; }
216 elsif (index($_,"Swap:")>=0) { (undef,undef,$swpuse,$swpfre)=split; }
217 
218 if ($KERNEL>2.4) {
219 # This is kernel >= 2.5 code
220 if ($_ =~ /^MemTotal:/) { (undef,$memtot,undef)=split; $memtot*=1024; }
221 elsif ($_ =~ /^MemFree:/) { (undef,$memfre,undef)=split; $memfre*=1024; }
222 elsif ($_ =~ /^Buffers:/) { (undef,$membuf,undef)=split; $membuf*=1024; }
223 elsif ($_ =~ /^Cached:/) { (undef,$memcac,undef)=split; $memcac*=1024; }
224 elsif ($_ =~ /^SwapTotal:/) { (undef,$swptot,undef)=split; $swptot*=1024; }
225 elsif ($_ =~ /^SwapFree:/) { (undef,$swpfre,undef)=split; $swpfre*=1024; }
226 }
227 
228 }
229 close(IN);
230 
231 if ($KERNEL>2.4) { $swpuse=$swptot-$swpfre; }
232 $memshr=$memtot-$memfre-$membuf-$memcac;
233 
234 RRDs::update "rrd/mem.rrd", time.":".$memfre.":".$memshr.":".$membuf.":".$memcac.":".$swpfre.":".$swpuse;
235 if ($ERROR = RRDs::error) { print time," ",$args{MODNAME},": nable to update `mem.rrd': $ERROR\n"; }
236 }
237 
238sub read_interrupts {
239 my %args=@_;
240 
241 # intr 905974335 490612570 3015 0 0 0 3 3 3 2 71611549 0 145961329 197785844 0 0 17 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
242 
243 my @stats;
244 open FILE,"/proc/stat";
245 while (<FILE>) { (undef,@stats)=split if /intr/; }
246 close FILE;
247 
248 # need first 17 values from array
249 my $result=join(":",@stats[0..16]);
250 
251 if ( ! -e "rrd/irq.rrd" ) { system("./makerrd","irq") }
252 RRDs::update "rrd/irq.rrd",time.":".$result;
253 if ($ERROR = RRDs::error) { print time," ",$args{MODNAME},": unable to update `irq.rrd': $ERROR\n"; }
254 }
255 
256 
257 
258#####################################################################################
259# here we go with the load-average value ...
260#
261sub read_uptime {
262 my %args=@_;
263 open(IN,"/proc/uptime"); ($up,$idle)=split(/ /,<IN>); close(IN);
264 $up/=86400;
265 $idle/=86400;
266 
267 if ( ! -e "rrd/uptime.rrd" ) { system("./makerrd","uptime") }
268 RRDs::update "rrd/uptime.rrd", time.":".$up.":".$idle;
269 if ($ERROR = RRDs::error) { print time," ",$args{MODNAME},": unable to update uptime.rrd: $ERROR\n"; }
270 }
271 
2721;

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