// two: KiB means 2^10 bytes, MiB means 2^20 bytes, and so on.
//
// SetMemoryLimit returns the previously set memory limit.
// A negative input does not adjust the limit, and allows for
// retrieval of the currently set memory limit.
func SetMemoryLimit(limit int64) int64 {
	return setMemoryLimit(limit)

			humanize.IBytes(vssLimit))
	}

	if ctx.MemLimit > 0 {
		maxLimit = ctx.MemLimit
	}

	if maxLimit > 0 {
		debug.SetMemoryLimit(int64(maxLimit))
	}

	// Do not use RLIMIT_AS as that is not useful and at times on systems < 4Gi
	// this can crash the Go runtime if the value is smaller refer
	// - https://github.com/golang/go/issues/38010

	/gc/gomemlimit:bytes
		Go runtime memory limit configured by the user, otherwise
		math.MaxInt64. This value is set by the GOMEMLIMIT environment
		variable, and the runtime/debug.SetMemoryLimit function.

	/gc/heap/allocs-by-size:bytes
		Distribution of heap allocations by approximate size.
		Bucket counts increase monotonically. Note that this does not

they are based on powers of two: KiB means 2^10 bytes, MiB means 2^20 bytes,
and so on. The default setting is [math.MaxInt64], which effectively disables the
memory limit. [runtime/debug.SetMemoryLimit] allows changing this limit at run
time.

The GODEBUG variable controls debugging variables within the runtime.
It is a comma-separated list of name=val pairs setting these named variables:

	// Run a GC cycle to get some of the stats to be non-zero.
	runtime.GC()

	// Set an arbitrary memory limit to check the metric for it
	limit := int64(512 * 1024 * 1024)
	oldLimit := debug.SetMemoryLimit(limit)
	defer debug.SetMemoryLimit(oldLimit)

	// Set a GC percent to check the metric for it
	gcPercent := 99
	oldGCPercent := debug.SetGCPercent(gcPercent)
	defer debug.SetGCPercent(oldGCPercent)