TiKV内存参数以memory-usage-limit、 storage.block-cache.capacity 哪个参数为准?

memory-usage-limit是全局的,是针对tikv整体进程的,而block-cache只是设置缓存的大小

let mut limit =
                (block_cache_cap.0 as f64 / BLOCK_CACHE_RATE * MEMORY_USAGE_LIMIT_RATE) as u64;