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implement cpuunit with cgroups

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Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
This commit is contained in:
Alexandre Derumier 2015-06-02 08:06:45 +02:00 committed by Dietmar Maurer
parent 98af06a56b
commit 58be00f10a
1 changed files with 10 additions and 1 deletions
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11
PVE/QemuServer.pm
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@ -123,7 +123,7 @@ my $confdesc = {
cpulimit => {
optional => 1,
type => 'integer',
description => "Limit of CPU usage in per cent. Note if the computer has 2 CPUs, it has total of 200% CPU time. Value '0' indicates no CPU limit.\n\nNOTE: This option is currently ignored.",
description => "Limit of CPU usage in per cent. Note if the computer has 2 CPUs, it has total of 200% CPU time. Value '0' indicates no CPU limit.\n\n.",
minimum => 0,
default => 0,
},
@ -2562,6 +2562,10 @@ sub config_to_command {
push @$cmd, '--slice', "qemu";
push @$cmd, '--unit', $vmid;
push @$cmd, '-p', "CPUShares=$cpuunits";
if ($conf->{cpulimit}) {
my $cpulimit = $conf->{cpulimit} * 100;
push @$cmd, '-p', "CPUQuota=$cpulimit"."\%";
}
push @$cmd, '/usr/bin/kvm';
@ -3831,6 +3835,8 @@ sub vmconfig_hotplug_pending {
qemu_memory_hotplug($vmid, $conf, $defaults, $opt);
} elsif ($opt eq 'cpuunits') {
cgroups_write("cpu", $vmid, "cpu.shares", $defaults->{cpuunits});
} elsif ($opt eq 'cpulimit') {
cgroups_write("cpu", $vmid, "cpu.cfs_quota_us", -1);
} else {
die "skip\n";
}
@ -3886,6 +3892,9 @@ sub vmconfig_hotplug_pending {
$value = qemu_memory_hotplug($vmid, $conf, $defaults, $opt, $value);
} elsif ($opt eq 'cpuunits') {
cgroups_write("cpu", $vmid, "cpu.shares", $conf->{pending}->{$opt});
} elsif ($opt eq 'cpulimit') {
my $cpulimit = $conf->{pending}->{$opt} == 0 ? -1 : $conf->{pending}->{$opt} * 100000;
cgroups_write("cpu", $vmid, "cpu.cfs_quota_us", $cpulimit);
} else {
die "skip\n"; # skip non-hot-pluggable options
}