/[vz-tools]/trunk/vz-optimize.pl
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /trunk/vz-optimize.pl

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Revision 15 - (show annotations)
Thu Feb 1 10:40:05 2007 UTC (15 years, 10 months ago) by dpavlin
File MIME type: text/plain
File size: 1608 byte(s)
extract parametars in variables (pending options addition)

1 #!/usr/bin/perl -w
2
3 use strict;
4
5 use Data::Dump qw/dump/;
6
7 my $watch_current = 'held';
8 my $watch_max = 'limit';
9
10 # tune optimizer
11 my $increase_over = 0.95; # 95% of resource $watch used
12 my $increase_limit = 1.1;
13 my $increase_barrier = 1.2;
14
15 ($watch_current,$watch_max) = ('maxheld','barrier');
16
17 my $debug = 0;
18
19 my $proc='/proc/user_beancounters';
20 $proc='./user_beancounters' if (! -e $proc);
21
22 open(my $bc, '<', $proc) || die "can't open $proc: $!";
23
24 my @cols;
25 my $vmid;
26
27 my $d;
28
29 warn "increasing $proc if $watch_current > $watch_max * $increase_over\n";
30
31 while(<$bc>) {
32 chomp;
33 next if (/^Version/);
34
35 $vmid = $1 if (s/^\s+(\d+):\s+//);
36 s/^\s+//;
37
38 my @d = split(/\s+/,$_);
39
40 if ($#d == 6 && $d[0] =~ m/^\w+$/) {
41 @cols = splice(@d,1);
42 # warn "## found cols: ", dump(@cols), "\n";
43 next;
44 }
45
46 my $res = $d[0];
47
48 foreach my $i ( 1 .. $#cols ) {
49 $d->{ $vmid }->{ $res }->{ $cols[$i] } = $d[$i];
50 }
51
52 my $r = $d->{ $vmid }->{ $res };
53
54
55 if ($r->{failcnt} > 0) {
56 if ( ($r->{ $watch_current } / $r->{ $watch_max }) > $increase_over ) {
57 my $new_limit = int( $r->{ $watch_max } * $increase_limit );
58 my $new_barr = int( $r->{ $watch_max } * $increase_barrier );
59 warn "# $vmid $res $r->{ $watch_max } -> $new_limit:$new_barr\n";
60 my $cmd = "vzctl set $vmid --${res} $new_limit:$new_barr --save";
61 warn $cmd,$/;
62 system $cmd if (! $debug);
63 } else {
64 warn sprintf("%s/%s failed, but not used %d%% [%d/%d %d%%]\n",
65 $vmid, $res, $increase_over * 100, $r->{ $watch_current }, $r->{ $watch_max }, ($r->{ $watch_current }/$r->{ $watch_max })*100
66 );
67 }
68
69 }
70 }
71 close($bc);
72
73 #print dump($d);

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