Hi All, I’m trying to understand the throttlers in Ceph, and I may need suggestions from the community. I plan to run some experiments against the throttler in the BlueStore to measure the latency performance. The parameters of interest include: bluestore_throttle_bytes bluestore_throttle_deferred_bytes bluestore_throttle_cost_per_io bluestore_throttle_cost_per_io_hdd bluestore_throttle_cost_per_io_ssd I’ll change these parameter and workload(size, type) to measure latency over time. The goal is to Propose a new throttler that can Keep as few operations in the BlueStore work queue as possible without increasing latency. Is this the right direction to go? Is there internal classifications for requests(onode, omap, collection obj, data blob) to be throttled in ObjectStore layer? Please feel free to comment. Thanks, Yiming
