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annotate openvz_checker.pl @ 4:c2cff30df6dc

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Add openvz_checker.pl (24:1c29ac915688) form local repo * check ovz setting consistency
author Peter Gervai <grin@grin.hu>
date Thu, 17 Oct 2013 08:49:10 +0200
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c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
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1 #!/usr/bin/perl
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2 #$Id: openvz_checker.pl,v 1c29ac915688 2009/12/09 21:17:13 grin $
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3 #(c)Peter Gervai, 2009
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4 # GPLv2 / CC-BY-SA 3.0
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5 #
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6 # check openvz resource settings
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7 # based on wiki pages
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8 #
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9
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10 use strict;
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11 use warnings;
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12
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13 use IO::File;
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14 use Data::Dumper;
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15
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16 my $dir_bc = "/proc/bc";
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17
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18 my $CUR=0;
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19 my $MAX=1;
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20 my $BAR=2;
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21 my $LIM=3;
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22
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23 # ia32...
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24 my $PAGESIZE=4096;
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25
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26 my @allsocketbuf = qw( tcprcvbuf tcpsndbuf dgramrcvbuf othersockbuf );
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27
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28 opendir( DIR, $dir_bc );
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29 my @veids = grep { /^\d+/ && -d "$dir_bc/$_" } readdir(DIR);
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30 closedir( DIR );
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31
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32 my %res;
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33 for my $veid ( @veids ) {
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34 next if $veid == 0;
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35 my $f = new IO::File "< $dir_bc/$veid/resources" or next;
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36 while( <$f> ) {
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37 chomp;
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38 # trim spaces
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39 s/^\s*(.*?)\s*$/$1/;
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40 my @data = split /\s+/;
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41 # held, maxheld, barrier, limit, failcnt
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42 $res{$veid}{$data[0]} = [ @data[1..5] ];
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43 }
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44 }
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45
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46 ## total ram
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47 my $ram = qx( free | grep Mem: ); chomp $ram;
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48 $ram = (split /\s+/, $ram)[1];
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49 print "RAM=$ram\n";
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50 $ram *= 1024;
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51
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52 ## swap
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53 my $swap = qx( free | grep Swap: ); chomp $swap;
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54 $swap = (split /\s+/, $swap)[1];
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55 print "SWAP=$swap\n";
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56 $swap *= 1024;
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57
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58
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59 my $sum;
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60 ### low mem x86_32
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61 # max lowram 832MB
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62 my $lowram = $ram > 832000000 ? 832000000 : $ram;
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63
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64
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65 ###############################
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66 ####### system wide config
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67 ###############################
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68
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69
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70 ###############################
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71 ## utiliation
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72 $sum=0;
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73 foreach my $veid (keys %res) {
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74 my $b = $res{$veid}{'kmemsize'}->[$CUR];
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75 foreach my $sb (@allsocketbuf) {
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76 $b += $res{$veid}{$sb}->[$CUR];
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77 }
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78 $sum += $b;
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79 }
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80
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81 print "Low memory (x86_32) Utilisation: ", &pretty($sum / (0.4 * $lowram));
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82 print " ( <1 OK; <2 unsafe; >2 dangerous)\n";
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83
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84
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85 ###############################
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86 ## commitment level
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87 $sum=0;
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88 foreach my $veid (keys %res) {
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89 my $b = $res{$veid}{'kmemsize'}->[$LIM];
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90 foreach my $sb (@allsocketbuf) {
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91 $b += $res{$veid}{$sb}->[$LIM];
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92 }
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93 $sum += $b;
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94 }
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95
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96 print "Low memory (x86_32) Commitment: ", &pretty($sum / (0.4 * $lowram));
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97 print " ( <1 OK; <1.5 acceptable; >2 not recommended)\n";
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98
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99
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100 ############################
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101 #### total ram
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102 ## utilisation
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103 $sum=0;
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104 foreach my $veid (keys %res) {
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105 my $b = $res{$veid}{'physpages'}->[$CUR] * $PAGESIZE;
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106 $b += $res{$veid}{'kmemsize'}->[$CUR];
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107 foreach my $sb (@allsocketbuf) {
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108 $b += $res{$veid}{$sb}->[$CUR];
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109 }
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110 $sum += $b;
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111 }
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112 print "Total RAM utilisation: ", &pretty($sum / $ram);
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113 print " ( <0.8 low; <1 ok; >1 impossible)\n";
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114
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115
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116 ############################
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117 #### total ram+swap
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118 ## utilisation
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119 $sum=0;
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parents:
diff changeset
120 foreach my $veid (keys %res) {
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parents:
diff changeset
121 my $b = $res{$veid}{'oomguarpages'}->[$CUR] * $PAGESIZE;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
122 $b += $res{$veid}{'kmemsize'}->[$CUR];
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
123 foreach my $sb (@allsocketbuf) {
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
124 $b += $res{$veid}{$sb}->[$CUR];
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
125 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
126 $sum += $b;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
127 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
128 print "RAM+swap utilisation: ", &pretty($sum / ($ram+$swap));
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
129 my $low_bound = &pretty($ram / ($ram+$swap));
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
130 my $hi_bound = &pretty(($ram + 0.5*$swap) / ($ram+$swap));
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
131 print " ( <$low_bound low; between ok; >$hi_bound bad)\n";
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
132
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
133
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
134 ## commitment
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
135 $sum=0;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
136 foreach my $veid (keys %res) {
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
137 my $b = $res{$veid}{'oomguarpages'}->[$BAR] * $PAGESIZE;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
138 $b += $res{$veid}{'kmemsize'}->[$LIM];
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
139 foreach my $sb (@allsocketbuf) {
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
140 $b += $res{$veid}{$sb}->[$LIM];
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
141 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
142 $sum += $b;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
143 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
144 print "RAM+swap commitment: ", &pretty($sum / ($ram+$swap));
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
145 print " ( <0.8 low; <1 ok; >1 not recommended)\n";
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
146
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
147
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Peter Gervai <grin@grin.hu>
parents:
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148 ## allocations
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
149 $sum=0;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
150 foreach my $veid (keys %res) {
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
151 my $b = $res{$veid}{'privvmpages'}->[$LIM] * $PAGESIZE;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
152 $b += $res{$veid}{'kmemsize'}->[$LIM];
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
153 foreach my $sb (@allsocketbuf) {
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
154 $b += $res{$veid}{$sb}->[$LIM];
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
155 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
156 $sum += $b;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
157 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
158 print "RAM+swap allocations: ", &pretty($sum / ($ram+$swap));
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
159 print " ( <1.5 low; <4 ok; >4 not recommended [oom])\n";
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
160
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
161
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
162 ###############################
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Peter Gervai <grin@grin.hu>
parents:
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163 ####### per VE configs
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
164 ###############################
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
165 foreach my $veid (sort { $a <=> $b } keys %res) {
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
166 # <numproc> should be average process num
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
167 &compare( $veid, $res{$veid}{'kmemsize'}->[$BAR],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
168 40*1024*$res{$veid}{'numproc'}->[$CUR] + $res{$veid}{'dcachesize'}->[$LIM],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
169 "kmemsize(bar)", "numproc~dcachesize", "kmemsize low for # of processes" );
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
170
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
171 &compare( $veid, $res{$veid}{'privvmpages'}->[$BAR], $res{$veid}{'vmguarpages'}->[$BAR],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
172 "privvmpages","vmguarpages", "mem alloc less than guarantee" );
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
173
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
174
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
175 &compare( $veid, $res{$veid}{'tcpsndbuf'}->[$LIM] - $res{$veid}{'tcpsndbuf'}->[$BAR],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
176 2.5*1024*$res{$veid}{'numtcpsock'}->[$LIM],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
177 "tcpsndbuf(lim-bar)", "numtcpsock(lim{bytes})", "tcp may hang");
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
178
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
179
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
180 &compare( $veid, $res{$veid}{'othersockbuf'}->[$LIM] - $res{$veid}{'othersockbuf'}->[$BAR],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
181 2.5*1024*$res{$veid}{'numothersock'}->[$LIM],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
182 "othersockbuf(lim-bar)", "numothersock{bytes}", "othersock may hang");
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
183
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
184
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
185 &compare( $veid, $res{$veid}{'tcprcvbuf'}->[$LIM] - $res{$veid}{'tcprcvbuf'}->[$BAR],
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
186 2.5*1024*$res{$veid}{'numothersock'}->[$LIM],
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
187 "tcprcvbuf(lim-bar)","numothersock{bytes}","may slow tcp" );
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
188
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
189
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
190 if( $res{$veid}{'tcprcvbuf'}->[$BAR] < 65535 ) {
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
191 print "$veid: tcprcvbuf too low (<64k)\n";
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
192 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
193
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
194
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
195 if( $res{$veid}{'tcpsndbuf'}->[$BAR] < 65535 ) {
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
196 print "$veid: tcpsndbuf too low (<64k)\n";
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
197 }
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
198
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
199
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
200 if( $res{$veid}{'dgramrcvbuf'}->[$BAR] < 131200 ) {
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
201 print "$veid: dgramrcvbuf too low (<129k)\n";
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
202 }
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
203
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
204
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
205 if( $res{$veid}{'othersockbuf'}->[$BAR] < 131200 ) {
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
206 print "$veid: othersockbuf too low (<129k)\n";
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
207 }
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
208
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
209
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
210 # numfile < avgnumproc*32
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
211 # ...
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
212
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
213 if( $res{$veid}{'dcachesize'}->[$BAR] <
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
214 $res{$veid}{'numfile'}->[$MAX] * 384 ) {
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
215 print "$veid: dcachesize likely low for dentry and inode allocs\n";
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
216 }
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
217
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
218
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
219 foreach my $param (keys %{$res{$veid}}) {
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
220 &compare( $veid, $res{$veid}{$param}->[$LIM], $res{$veid}{$param}->[$BAR],
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
221 "limit", "barrier", "problem with $param" );
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
222 }
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
223 }
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
224
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
225
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
226
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
227 sub compare {
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
228 my ($veid, $large, $small, $ltext, $stext, $text) = @_;
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
229
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
230 if( $large < $small ) {
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
diff changeset
231 # bad...
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
232 print "VE $veid: $text ($ltext=$large < $stext=$small)\n";
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Peter Gervai <grin@grin.hu>
parents:
diff changeset
233 }
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
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234 return;
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parents:
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235 }
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parents:
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236
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
Peter Gervai <grin@grin.hu>
parents:
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237
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
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238
c2cff30df6dc Add openvz_checker.pl (24:1c29ac915688) form local repo
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239 sub pretty($) {
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Peter Gervai <grin@grin.hu>
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240 return sprintf("%6.4f", shift);
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241 }