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MHSanaei
69ad8b76e1
The Usage card showed runtime.MemStats.Sys, a never-shrinking high-water mark of reserved address space that also counts memory already returned to the OS, so it overstated real usage (e.g. ~300 MB on an idle 1-client server). Report process RSS instead so the number matches the OS and drops as memory is freed. Replace the auto GOMEMLIMIT that targeted ~90 percent of total system RAM (a near no-op while the heap sits far below the limit, and a GC-thrash risk on small/shared VPS per go.dev/doc/gc-guide) with: a lower default GOGC (XUI_GOGC, default 75), a periodic debug.FreeOSMemory job (XUI_MEMORY_RELEASE_INTERVAL, default 10m, 0 disables), and a soft limit applied only from an explicit budget (GOMEMLIMIT, XUI_MEMORY_LIMIT, or a real cgroup cap at 90 percent).
35 lines
795 B
Go
35 lines
795 B
Go
package sys
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import (
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"os"
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"sync"
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"github.com/shirou/gopsutil/v4/process"
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)
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var (
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selfProc *process.Process
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selfProcOnce sync.Once
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)
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// SelfRSS returns the resident set size of the current process in bytes — the
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// real physical memory the OS attributes to the panel. Unlike
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// runtime.MemStats.Sys (a never-shrinking high-water mark of reserved address
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// space that also counts memory already returned to the OS), RSS reflects current
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// usage and drops as memory is released. Returns 0 when unavailable.
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func SelfRSS() uint64 {
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selfProcOnce.Do(func() {
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if p, err := process.NewProcess(int32(os.Getpid())); err == nil {
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selfProc = p
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}
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})
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if selfProc == nil {
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return 0
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}
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if mi, err := selfProc.MemoryInfo(); err == nil && mi != nil {
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return mi.RSS
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}
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return 0
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}
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