apt install eatmydata

git clone https://github.com/stewartsmith/libeatmydata.git # (or extract from source tarball)
cd libeatmydata
autoreconf -i # (if building from git only)
./configure
make
make check
sudo make install

eatmydata foo

TEST                           RESULT         TIME (ms)   TIME (with libeatmydata)
----------------------------------------------------------------------------------
main.innodb-lock               [ pass ]           4523     4323
main.innodb-replace            [ pass ]            102       56
main.innodb-ucs2               [ pass ]           5786     1084
main.innodb                    [ pass ]          78306    24900
main.innodb_gis                [ pass ]           2647     1544
main.innodb_mysql              [ pass ]          86810    68579
main.innodb_notembedded        [ pass ]            198      150
main.innodb_timeout_rollback   [ pass ]           2990     2750
main.innodb_trx_weight         [ pass ]           1608      841
---------------------------------------------------------------
Stopping All Servers
All 9 tests were successful.
The servers were restarted 7 times
WITHOUT: Spent 182.97 seconds actually executing testcases
WITH   : Spent 104.227 seconds actually executing testcases
WITHOUT:               WITH:
real    3m36.053s      real    2m10.610s
user    0m42.323s      user    0m41.939s
sys     0m2.844s       sys     0m2.356s