Tasks #51409
Updated by Mark Kogan almost 3 years ago
This tracker issue is a TODO list for the remaining tasks for the D3N DataCache following the initial commit. # debug `s3_tests` failures when `--rgw_compression=zlib` # debug s3_tests failures when `rgw_max_chunk_size != rgw_obj_stripe_size` # check if `-o rgw_enable_ops_log=true` is still necesary for D3N operation # does `D3nL1CacheRequest` need to be allocated on the heap? (https://github.com/ceph/ceph/pull/36266/#discussion_r655622746) # does the `aiocb` ilabaio callback structure needs to allocated on the heap? (https://github.com/ceph/ceph/pull/36266/#discussion_r655617364) # check if changing the `d3n_cache_map` from std::unordered_map to `boost::intrusive::list` improves eviction performance (https://github.com/ceph/ceph/pull/36266/#discussion_r494300389) # add perf counters and radosgw-admin & rest facilities to check the amount of d3n cache data stored and object/byte hit ratios additional items from github comment: https://github.com/ceph/ceph/pull/36266/#pullrequestreview-697467454 * support non-yielding version of rgw::d3n_cache_op() * optimize random eviction * user docs (high-level feature description, setup instructions, config options) additional todo items: * add cache-in algorithm selection, ex: option to populate cache on PUT option to populate cache only after certain number of gets during specified time time window * Predictive Cache Analisis - While the Cache disabled, analyza the load and captures Cache statistics to observes what the Cache hit ratios might be with the Cache enabled (Credit Or)