Comment 1 for bug 1283754

This was easy to confirm with 5.6.19 and version 2.2.10 of the toolkit:

[openxs@centos ~]$ mysql -uroot -e 'select version(), @@sort_buffer_size'
+-------------+--------------------+
| version() | @@sort_buffer_size |
+-------------+--------------------+
| 5.6.19-67.0 | 262144 |
+-------------+--------------------+
[openxs@centos ~]$ pt-variable-advisor --version
pt-variable-advisor 2.2.10
[openxs@centos ~]$ pt-variable-advisor h=localhost | grep sort
# NOTE sort_buffer_size-1: The sort_buffer_size variable should generally be left at its default unless an expert determines it is necessary to change it.
[openxs@centos ~]$ mysql -uroot -e 'set global sort_buffer_size=DEFAULT'
[openxs@centos ~]$ mysql -uroot -e 'select version(), @@sort_buffer_size'
+-------------+--------------------+
| version() | @@sort_buffer_size |
+-------------+--------------------+
| 5.6.19-67.0 | 262144 |
+-------------+--------------------+