prometheusmetricshost-metricsmachine-metricsnode-metricsprocfsprometheus-exportersystem-informationsystem-metrics
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44 lines
1.6 KiB
44 lines
1.6 KiB
// Copyright 2020 The Prometheus Authors |
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// Licensed under the Apache License, Version 2.0 (the "License") |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// +build !nomeminfo |
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package collector |
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import ( |
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"golang.org/x/sys/unix" |
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"unsafe" |
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) |
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func (c *meminfoCollector) getMemInfo() (map[string]float64, error) { |
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uvmexpb, err := unix.SysctlRaw("vm.uvmexp") |
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if err != nil { |
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return nil, err |
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} |
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uvmexp := *(*unix.Uvmexp)(unsafe.Pointer(&uvmexpb[0])) |
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ps := float64(uvmexp.Pagesize) |
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// see uvm(9) |
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return map[string]float64{ |
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"active_bytes": ps * float64(uvmexp.Active), |
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"cache_bytes": ps * float64(uvmexp.Vnodepages), |
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"free_bytes": ps * float64(uvmexp.Free), |
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"inactive_bytes": ps * float64(uvmexp.Inactive), |
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"size_bytes": ps * float64(uvmexp.Npages), |
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"swap_size_bytes": ps * float64(uvmexp.Swpages), |
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"swap_used_bytes": ps * float64(uvmexp.Swpginuse), |
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"swapped_in_pages_bytes_total": ps * float64(uvmexp.Pgswapin), |
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"swapped_out_pages_bytes_total": ps * float64(uvmexp.Pgswapout), |
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"wired_bytes": ps * float64(uvmexp.Wired), |
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}, nil |
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}
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