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Added node_memory_buffer, node_memory_swaptotal to meminfo_bsd (#451)

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This commit is contained in:
Derek Marcotte 2017-03-01 00:36:02 -05:00 committed by Tobias Schmidt
parent 84eaa8fecd
commit bdc2131332
1 changed files with 46 additions and 13 deletions
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59
collector/meminfo_bsd.go
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@ -22,30 +22,63 @@ import (
"golang.org/x/sys/unix"
)
type sysctlType uint8
const (
sysctlTypeUint32 sysctlType = iota
sysctlTypeUint64
)
type meminfoSysctl struct {
name string
dataType sysctlType
conversion func(uint64) uint64
}
func (c *meminfoCollector) getMemInfo() (map[string]float64, error) {
info := make(map[string]float64)
size, err := unix.SysctlUint32("vm.stats.vm.v_page_size")
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)
}
size := uint64(tmp32)
fromPage := func(v uint64) uint64 {
return v * size
}
for key, v := range map[string]string{
"active": "vm.stats.vm.v_active_count",
"inactive": "vm.stats.vm.v_inactive_count",
"wire": "vm.stats.vm.v_wire_count",
"cache": "vm.stats.vm.v_cache_count",
"free": "vm.stats.vm.v_free_count",
"swappgsin": "vm.stats.vm.v_swappgsin",
"swappgsout": "vm.stats.vm.v_swappgsout",
"total": "vm.stats.vm.v_page_count",
for key, v := range map[string]meminfoSysctl{
"active_bytes": {"vm.stats.vm.v_active_count", sysctlTypeUint32, fromPage},
"inactive_bytes": {"vm.stats.vm.v_inactive_count", sysctlTypeUint32, fromPage},
"wired_bytes": {"vm.stats.vm.v_wire_count", sysctlTypeUint32, fromPage},
"cache_bytes": {"vm.stats.vm.v_cache_count", sysctlTypeUint32, fromPage},
"buffer_bytes": {"vfs.bufspace", sysctlTypeUint32, nil},
"free_bytes": {"vm.stats.vm.v_free_count", sysctlTypeUint32, fromPage},
"size_bytes": {"vm.stats.vm.v_page_count", sysctlTypeUint32, fromPage},
"swap_in_bytes_total": {"vm.stats.vm.v_swappgsin", sysctlTypeUint32, fromPage},
"swap_out_bytes_total": {"vm.stats.vm.v_swappgsout", sysctlTypeUint32, fromPage},
"swap_size_bytes": {"vm.swap_total", sysctlTypeUint64, nil},
} {
value, err := unix.SysctlUint32(v)
var tmp64 uint64
switch v.dataType {
case sysctlTypeUint32:
tmp32, err = unix.SysctlUint32(v.name)
tmp64 = uint64(tmp32)
case sysctlTypeUint64:
tmp64, err = unix.SysctlUint64(v.name)
}
if err != nil {
return nil, err
}
// Convert metrics to kB (same as Linux meminfo).
info[key] = float64(value) * float64(size)
if v.conversion != nil {
// Convert to bytes.
info[key] = float64(v.conversion(tmp64))
continue
}
info[key] = float64(tmp64)
}
return info, nil
}