[GR-74008] Use memory_pressure for free memory on macOS.#13141
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The numbers reported by
vm_statappear to be notoriously off from the actual memory pressure, especially on machines that have been running for some time. This PR changes the detection to usememory_pressureinstead ofvm_stat.On my MacBook that's been up for some days, the
vm_stat-based detection reports only ~38,75% of free memory.memory_pressure, on the other hand, reports ~81% which matches what Activity Monitor and iStat Menus report.