O+P Insights: Improving Linux performance by preserving Buffer Cache StateThe file system cache (buffer cache) helps programs to get to their data blocks faster by keeping recently used file blocks in memory. If you copy a large file tree, this has a devestating effect on the cache since all the copied data will also end up in the cache, force other data blocks out of the cache. This is very bad for system performance since of all the other processes on the system that
