Function readInactiveFile

src/resolution/memory-budget.ts:40–47

`inactive_file` from a cgroup memory.stat file — reclaimable page cache.

(statPath: string)

/** `inactive_file` from a cgroup memory.stat file — reclaimable page cache. */
function readInactiveFile(statPath: string): number {
  try {
    const m = /^inactive_file (\d+)$/m.exec(fs.readFileSync(statPath, 'utf8'));
    return m ? Number.parseInt(m[1]!, 10) : 0;
  } catch {
    return 0;
  }
}

/**
 * Available headroom under the cgroup memory limit (v2 then v1), or null