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MDEV-20907 Set innodb_log_files_in_group=1 by default

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Historically, InnoDB split the redo log into at least 2 files.
MDEV-12061 allowed the minimum to be innodb_log_files_in_group=1,
but it kept the default at innodb_log_files_in_group=2.

Because performance seems to be slightly better with only one log file,
and because implementing an append-only variant of the log would require
a single file, let us define the default to be 1, and have
innodb_log_file_size=96M, to retain the same default total size.
This commit is contained in:
Marko Mäkelä
2019-10-28 17:11:10 +02:00
parent 3043f38436
commit 613e9e7d4d
24 changed files with 59 additions and 66 deletions
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mysql-test/mysql-test-run.pl
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@ -3348,7 +3348,7 @@ sub mysql_install_db {
mtr_add_arg($args, "--loose-skip-plugin-$_") for @optional_plugins;
# starting from 10.0 bootstrap scripts require InnoDB
mtr_add_arg($args, "--loose-innodb");
mtr_add_arg($args, "--loose-innodb-log-file-size=5M");
mtr_add_arg($args, "--loose-innodb-log-file-size=10M");
mtr_add_arg($args, "--disable-sync-frm");
mtr_add_arg($args, "--tmpdir=%s", "$opt_vardir/tmp/");
mtr_add_arg($args, "--core-file");