dm-bufio divides the size of cache by the number of clients and uses it as a per-client limit. However, this is suboptimal when there is large amount of clients.
This patch set introduces global buffer replacement. All the buffers from all the clients are put to a global queue and dm-bufio cleans up old buffers in the queue. This improves cache utilization - if one dm-bufio client uses the cache heavily and another dm-bufio client is not using the cache, dm-bufio will prefer caching buffers from the first client (instead of partitioning the cache equally between the first and second client). -- dm-devel mailing list [email protected] https://www.redhat.com/mailman/listinfo/dm-devel
