Percona Server with XtraDB

Missing branch predictor annotations for fake changes

Reported by Laurynas Biveinis on 2013-06-13
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Server
Status tracked in 5.6
5.1
Low
Laurynas Biveinis
5.5
Low
Laurynas Biveinis
5.6
Low
Laurynas Biveinis

Bug Description

Some, but not all, were fixed in the recent performance work. The fact that they weren't fixed there probably means they are not the worst offenders, but it's a good idea to maintain consistency.

Findable by grepping for "fake_change". Notable occurrences (i.e. more likely to be on hotter than colder code paths):
- in sql_insert.cc;
- in lock0lock.cc.

Related branches

lp:~laurynas-biveinis/percona-server/fake-changes-from-fb-5.5
Merged into lp:percona-server/5.5 at revision 587
Stewart Smith (community): Approve on 2013-10-17
Vlad Lesin: Approve (g2) on 2013-09-30
Sergei Glushchenko: Pending (g2) requested 2013-07-29
Laurynas Biveinis: Pending requested 2013-07-29
lp:~laurynas-biveinis/percona-server/fake-changes-from-fb-5.6
Merged into lp:percona-server at revision 479
Stewart Smith (community): Approve on 2013-10-17
Vlad Lesin: Approve (g2) on 2013-09-30
Laurynas Biveinis: Pending requested 2013-07-29
tags: added: fake-changes performance xtradb
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