Function cache_size::l3_cache_line_size

pub fn l3_cache_line_size() -> Option<usize>

Returns the line size in bytes of the unified L3 cache.

The only possibilities for this returning None are if the system does not support cache parameters, in which case get_cache_parameters() will fail, or if the system has no unified L3 cache.

This is computed from coherency_line_size(), and if there are multiple caches available, it returns the size of the smallest cache.