1 Messenger throttle (number and size)
2 |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
3 FileStore op_queue throttle (number and size, includes a soft throttle based on filestore_expected_throughput_(ops|bytes))
4 |--------------------------------------------------------|
6 |---------------------------------------------------------------------------------------------------------|
7 Journal (size, includes a soft throttle based on filestore_expected_throughput_bytes)
8 |-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
9 |----------------------------------------------------------------------------------------------------> flushed ----------------> synced
11 Op: Read Header --DispatchQ--> OSD::_dispatch --OpWQ--> PG::do_request --journalq--> Journal --FileStore::OpWQ--> Apply Thread --Finisher--> op_applied -------------------------------------------------------------> Complete
13 SubOp: --Messenger--> ReadHeader --DispatchQ--> OSD::_dispatch --OpWQ--> PG::do_request --journalq--> Journal --FileStore::OpWQ--> Apply Thread --Finisher--> sub_op_applied -
15 |-----------------------------> flushed ----------------> synced
16 |------------------------------------------------------------------------------------------|
18 |---------------------------------|
20 |-----------------------------------------------------|
21 FileStore op_queue throttle (number and size)