On 09/26, Steve French wrote:
Does anyone have perf data on enabling esize (minimum size to determine if worth offloading for decryption) and what size (e.g. I was thinking 256K or 512K minimum encryption offload size)? Does setting esize help any workloads you have tried - and which ones?
On my very shallow tests, with esize=1, offloading decryption has a 2x perf improvement. Decryption is (currently?) very costly -- I see an average of 700ms per 4MiB payload on my test VM (with a high of 900ms!). IMHO the "inflight > 1" criteria is the best way to determine whether to offload decryption. I don't really have an opinion on esize/min_enc_offload, but if it's so hard to determine a default or minimum value to it, imagine leaving that choice to the user. My 2c, Enzo
