Add openbsd meminfo (#724)

* Implements meminfo collector for OpenBSD

This is a rework of #151.

* Fix CGO import

* Add some useful metrics

* Rename total -> size for normalization
This commit is contained in:
Matthieu Guegan 2018-01-04 10:32:08 +01:00 committed by Ben Kochie
parent 7f6c59e198
commit d6ef10bb56
2 changed files with 66 additions and 1 deletions

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@ -11,7 +11,7 @@
// See the License for the specific language governing permissions and
// limitations under the License.
// +build darwin dragonfly freebsd linux
// +build darwin dragonfly freebsd linux openbsd
// +build !nomeminfo
package collector

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@ -0,0 +1,65 @@
// 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.
// +build openbsd
// +build !nomeminfo
package collector
import (
"fmt"
)
/*
#include <sys/param.h>
#include <sys/types.h>
#include <sys/sysctl.h>
int
sysctl_uvmexp(struct uvmexp *uvmexp)
{
static int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
size_t sz = sizeof(struct uvmexp);
if(sysctl(uvmexp_mib, 2, uvmexp, &sz, NULL, 0) < 0)
return -1;
return 0;
}
*/
import "C"
func (c *meminfoCollector) getMemInfo() (map[string]float64, error) {
var uvmexp C.struct_uvmexp
if _, err := C.sysctl_uvmexp(&uvmexp); err != nil {
return nil, fmt.Errorf("sysctl CTL_VM VM_UVMEXP failed: %v", err)
}
ps := uvmexp.pagesize
// see uvm(9)
return map[string]float64{
"active_bytes": float64(ps * uvmexp.active),
"cache_bytes": float64(ps * uvmexp.vnodepages),
"free_bytes": float64(ps * uvmexp.free),
"inactive_bytes": float64(ps * uvmexp.inactive),
"size_bytes": float64(ps * uvmexp.npages),
"swap_size_bytes": float64(ps * uvmexp.swpages),
"swap_used_bytes": float64(ps * uvmexp.swpgonly),
"swapped_in_pages_bytes_total": float64(ps * uvmexp.pgswapin),
"swapped_out_pages_bytes_total": float64(ps * uvmexp.pgswapout),
"wired_bytes": float64(ps * uvmexp.wired),
}, nil
}