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sdong e3a82bb934 PosixRandomAccessFile::MultiRead() to use I/O uring if supported (#5881) 
Summary:
Right now, PosixRandomAccessFile::MultiRead() executes read requests in parallel. In this PR, it leverages I/O Uring library to run it in parallel, even when page cache is enabled. This function will fall back if the kernel version doesn't support it.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5881

Test Plan: Run the unit test on a kernel version supporting it and make sure all tests pass, and run a unit test on kernel version supporting it and see it pass. Before merging, will also run stress test and see it passes.

Differential Revision: D17742266

fbshipit-source-id: e05699c925ac04fdb42379456a4e23e4ebcb803a
2019-12-07 20:55:52 -08:00
..
amalgamate.py Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
build_detect_platform PosixRandomAccessFile::MultiRead() to use I/O uring if supported (#5881) 2019-12-07 20:55:52 -08:00
dependencies_4.8.1.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
dependencies_platform007.sh PosixRandomAccessFile::MultiRead() to use I/O uring if supported (#5881) 2019-12-07 20:55:52 -08:00
dependencies.sh Update dependencies (#5777) 2019-09-16 20:44:47 -07:00
dockerbuild.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
error_filter.py Separate crash test with atomic flush (#4945) 2019-02-19 14:08:39 -08:00
fb_compile_mongo.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
fbcode_config4.8.1.sh Clean up + fix build scripts re: USE_SSE= and PORTABLE= (#5800) 2019-09-13 11:07:13 -07:00
fbcode_config_platform007.sh PosixRandomAccessFile::MultiRead() to use I/O uring if supported (#5881) 2019-12-07 20:55:52 -08:00
fbcode_config.sh Clean up + fix build scripts re: USE_SSE= and PORTABLE= (#5800) 2019-09-13 11:07:13 -07:00
format-diff.sh Fix format-diff.sh detecting changes vs. upstream (#5831) 2019-09-23 09:07:00 -07:00
gnu_parallel Fix typos in comments (#4456) 2018-10-04 20:46:50 -07:00
make_package.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
precommit_checker.py build_tools/precommit_checker.py: don't hard-code a platform-afflicted python path (#6124) 2019-12-05 11:49:17 -08:00
regression_build_test.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
rocksdb-lego-determinator Using clang for internal ubsan tests (#5952) 2019-10-21 19:37:00 -07:00
run_ci_db_test.ps1 Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
setup_centos7.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
update_dependencies.sh PosixRandomAccessFile::MultiRead() to use I/O uring if supported (#5881) 2019-12-07 20:55:52 -08:00
version.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00