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https://github.com/ethereum/go-ethereum.git
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d93dda49c8
Currently geth ignores the docker `--memory` directive and doesn't adjust its cache size downward when necessary, potentially running into OOM. while gopsutil has functions like `docker/CgroupMem()` they are rather for reading cgroup memory limit of a container from the host.
59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright 2026 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Package memlimit detects the effective memory limit of the current
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// process. On Linux the cgroup limit is consulted first, with total
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// system memory as the fallback on all platforms.
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package memlimit
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import (
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gopsutil "github.com/shirou/gopsutil/mem"
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)
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// Source identifies which mechanism produced the limit value.
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type Source int
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const (
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SourceUnknown Source = iota
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SourceCgroupV2
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SourceCgroupV1
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SourceSystem
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)
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func (s Source) String() string {
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switch s {
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case SourceCgroupV2:
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return "cgroup-v2"
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case SourceCgroupV1:
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return "cgroup-v1"
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case SourceSystem:
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return "system"
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default:
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return "unknown"
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}
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}
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// Limit returns the memory limit visible to this process in bytes and
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// the source that produced it.
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func Limit() (bytes uint64, source Source) {
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if v, src, ok := platformLimit(); ok {
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return v, src
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}
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if mem, err := gopsutil.VirtualMemory(); err == nil {
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return mem.Total, SourceSystem
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}
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return 0, SourceUnknown
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}
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