To modify warmup behavior by changing the setting for ep_warmup_min_items_threshold use the command-line tool provided with your Couchbase Server installation, cbepctl. This indicates the number of items loaded in RAM that must be reached for Couchbase Server to begin serving data. The lower this number, the sooner your server can begin serving data. Be aware, however that if you set this value to be too low, once requests come in for items, the item may not be in memory and Couchbase Server will experience cache-miss errors.