minio/cmd/metrics-v3-system-memory.go
Shireesh Anjal 6df76ca73c
Add system memory metrics in v3 (#19486)
Following memory metrics will be added under /system/memory

- available
- buffers
- cache
- free
- shared
- total
- used
- used_perc
2024-04-16 22:10:25 -07:00

66 lines
2.2 KiB
Go

// Copyright (c) 2015-2024 MinIO, Inc.
//
// # This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
)
const (
memTotal = "total"
memUsed = "used"
memFree = "free"
memBuffers = "buffers"
memCache = "cache"
memUsedPerc = "used_perc"
memShared = "shared"
memAvailable = "available"
)
var (
memTotalMD = NewGaugeMD(memTotal, "Total memory on the node")
memUsedMD = NewGaugeMD(memUsed, "Used memory on the node")
memUsedPercMD = NewGaugeMD(memUsedPerc, "Used memory percentage on the node")
memFreeMD = NewGaugeMD(memFree, "Free memory on the node")
memBuffersMD = NewGaugeMD(memBuffers, "Buffers memory on the node")
memCacheMD = NewGaugeMD(memCache, "Cache memory on the node")
memSharedMD = NewGaugeMD(memShared, "Shared memory on the node")
memAvailableMD = NewGaugeMD(memAvailable, "Available memory on the node")
)
// loadMemoryMetrics - `MetricsLoaderFn` for node memory metrics.
func loadMemoryMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {
memMetrics, err := c.memoryMetrics.Get()
if err != nil {
metricsLogIf(ctx, err)
return err
}
m.Set(memTotal, float64(memMetrics.Total))
m.Set(memUsed, float64(memMetrics.Used))
usedPerc := float64(memMetrics.Used) * 100 / float64(memMetrics.Total)
m.Set(memUsedPerc, usedPerc)
m.Set(memFree, float64(memMetrics.Free))
m.Set(memBuffers, float64(memMetrics.Buffers))
m.Set(memCache, float64(memMetrics.Cache))
m.Set(memShared, float64(memMetrics.Shared))
m.Set(memAvailable, float64(memMetrics.Available))
return nil
}