Hi, Are there any performance tuning settings for RGW that you can share please ? With the hardware I have, I believe I should be able to "squeeze" more 7 Supermicro dual CPU, 128 cores ( Intel Gold 6530), 1 TB RAM, 2 x 100GB bonded cluster network, 2 x 25 GB bonded private network cephadm, 5 RGW daemons (one per server) with haproxy in front of them Uploading a 5.5 GB file using s3cmd takes 2m21 ( the client has a 10GB connection) hardware/other tweaks HDD +DB/WAL on NVME pool EC 4+2 with meta on NVME vm.swapineess = 0 CPU intel_idle.max_cstate=0 processor.max_cstate=0 The servers have a less than 2 % CPU utilization and 30% memory usage Cluster is not under heavy usage - I only have one client using the bucket which has 7001 shards I have been trying these ones with very little success (taken from here https://links.imagerelay.com/cdn/3404/ql/3cd809aeba7c42f395ca8a7256ba488a/BP... ) rgw thread pool size = 512 #default 100, increase for heavier load rgw max chunk size = 4194304# default is 128k, increase to 4MB helps with larger objects rgw_obj_stripe_size = 4194304 # (default 4M for luminous) rgw_list_bucket_min_readahead = 4000 #(default 1000) rgw_max_listing_results = 4000 rgw_cache_expiry_interval = 1800 #(default 900s) rgw_enable_usage_log = false rgw_enable_ops_log = false rgw dynamic resharding = false rgw override bucket index max shards = 50 # rgw bucket index max aio = 16 # default 8 rgw cache lru size = 50000 #number of entries in the cache rgw_gc_obj_min_wait = 21600 #in seconds(default 2_hr) rgw gc processor period = 7200 #(default 1hr) rgw objexp gc interval = 3600 # default 10_min, objecter inflight op bytes = 1073741824 # default 100_M, this is 1GB objecter inflight ops = 24576 Many thanks Steven