percona-discussion team mailing list archive

[Yasufumi Kinoshita <yasufumi.kinoshita@xxxxxxxxxxx>]

We can set by innodb_file_io_threads.
But currently, it is set to 10 threads if it is under 10. over 10 is configurable.

In recovery process, read IO threads do the recovery after the each read of page.
So I think the 10 threads may be profitable even if single HDD is used.

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2nd-phase is very slow
https://bugs.launchpad.net/bugs/358194
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developers, which is the registrant for Percona-XtraBackup.

Status in Open source backup tool for InnoDB and XtraDB: Fix Committed

Bug description:
2nd-phase is InnoDB: Progress in percents: 0 1 2 3 4 5 6
it is VERY slow now

How to improve:
...