Xavier Deguillard a3d6554a8c store: speed up HgImportRequestQueue::enqueue 1.5x ... Summary: When turning on the native prefetch, EdenFS will enqueue tons of blob requests to the import request queue. The expectation is then that the threads will dequeue batch of requests and run them. What is being observed is however vastly different: the dequeued batches are barely bigger than 10, far lower than the batch capacity, leading to fetching inefficiencies. The reason for this is that enqueuing is too costly. The first step in making enqueuing less costly is to reduce the number of times the lock needs to be acquired by moving the de-duplication inside the enqueue function itself. On top of reducing the number of times the lock is held, it also halves the number of allocation done under the lock. Reviewed By: chadaustin Differential Revision: D30520226 fbshipit-source-id: 52f6e3c1ec45caa5c47e3fd122b3a933b0448e7c		2021-08-26 12:28:50 -07:00
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future.cpp	utils: add default constructor to ImmediateFuture	2021-05-11 08:05:11 -07:00
get_sha1_thrift.cpp	Remove dead includes in eden	2020-10-09 15:25:47 -07:00
glob.cpp	pool eden thrift connections	2021-08-10 18:57:52 -07:00
hg_import_request_queue.cpp	store: speed up HgImportRequestQueue::enqueue 1.5x	2021-08-26 12:28:50 -07:00
open_close_parallel.cpp	move benchmarks/ into eden/fs/	2020-05-04 11:33:12 -07:00
random_writes.cpp	add 4k random writes benchmark	2020-07-14 16:13:37 -07:00
stat.cpp	add 4k random writes benchmark	2020-07-14 16:13:37 -07:00