node_exporter/collector/meminfo_bsd.go

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// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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// +build freebsd dragonfly
// +build !nomeminfo
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package collector
import (
"fmt"
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"golang.org/x/sys/unix"
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)
func (c *meminfoCollector) getMemInfo() (map[string]float64, error) {
info := make(map[string]float64)
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tmp32, err := unix.SysctlUint32("vm.stats.vm.v_page_size")
if err != nil {
return nil, fmt.Errorf("sysctl(vm.stats.vm.v_page_size) failed: %s", err)
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}
size := float64(tmp32)
fromPage := func(v float64) float64 {
return v * size
}
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for _, ctl := range []bsdSysctl{
{name: "active_bytes", mib: "vm.stats.vm.v_active_count", conversion: fromPage},
{name: "inactive_bytes", mib: "vm.stats.vm.v_inactive_count", conversion: fromPage},
{name: "wired_bytes", mib: "vm.stats.vm.v_wire_count", conversion: fromPage},
{name: "cache_bytes", mib: "vm.stats.vm.v_cache_count", conversion: fromPage},
{name: "buffer_bytes", mib: "vfs.bufspace"},
{name: "free_bytes", mib: "vm.stats.vm.v_free_count", conversion: fromPage},
{name: "size_bytes", mib: "vm.stats.vm.v_page_count", conversion: fromPage},
{name: "swap_in_bytes_total", mib: "vm.stats.vm.v_swappgsin", conversion: fromPage},
{name: "swap_out_bytes_total", mib: "vm.stats.vm.v_swappgsout", conversion: fromPage},
{name: "swap_size_bytes", mib: "vm.swap_total", dataType: bsdSysctlTypeUint64},
} {
v, err := ctl.Value()
if err != nil {
return nil, err
}
info[ctl.name] = v
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}
return info, nil
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}