pub fn total_ram_bytes() -> Option<u64>Expand description
Returns the total physical RAM of the machine in bytes, best-effort.
- Linux:
sysconf(_SC_PHYS_PAGES) × sysconf(_SC_PAGE_SIZE). - macOS:
sysctlbyname("hw.memsize", …). - Other targets:
None.
Returns None on any error; never panics. The adaptive controller uses this
as the denominator of its memory-budget guardrail.