Hi, Ian! On May 26, Ian Gilfillan wrote:

What does the Syncs server status variable record, and when was it introduced? I can't seem to find this documented anywhere.

It was introduced in 5.1.44, and counts the number of times my_sync() was called. It's basically the number of times the server had to force data to disk. It covers the binary log, frm creation (if these operations are configured to sync), and some storage engines (Archive, CSV, Aria), but not InnoDB or XtraDB. Regards, Sergei