Bootstrap tuning #2432

Job	Run time
macOS [UBSAN] [lmdb \| clang]	47m 53s
Linux [UBSAN] [lmdb \| clang]	40m 29s
macOS [ASAN] [lmdb \| clang]	33m 53s
Linux [ASAN] [lmdb \| clang]	37m 40s
macOS [TSAN] [lmdb \| clang]	33m 15s
Linux [ASAN_INT] [lmdb \| clang] (Errors Ignored)	38m 48s
macOS [UBSAN] [rocksdb \| clang]	45m 5s
Linux [TSAN] [lmdb \| clang]	42m 39s
macOS [ASAN] [rocksdb \| clang]	41m 2s
Linux [LEAK] [lmdb \| clang]	41m 22s
macOS [TSAN] [rocksdb \| clang]	51m 38s
Linux [UBSAN] [rocksdb \| clang]	50m 12s
Linux [ASAN] [rocksdb \| clang]	55m 39s
Linux [ASAN_INT] [rocksdb \| clang] (Errors Ignored)	55m 9s
Linux [LEAK] [rocksdb \| clang]	54m 1s
	11h 8m 45s

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