Percona Server with XtraDB

fdatasync() can be used for transaction log and doublewrite buffer

Reported by Yasufumi Kinoshita on 2011-06-29
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona Server
Medium
Unassigned
5.1
Medium
Unassigned
5.5
Medium
Unassigned

Bug Description

fsync() is intended to sync also metadata of the file (size, name, access time, etc..)
But sync for transaction log and doublewrite buffer don't need to change such metadata of the each files.
From point of view about performance, fdatasync() is better for them than fsync().

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