split_doublewrite for each write IO thread
Bug #690019 reported by
Vadim Tkachenko
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | ||
---|---|---|---|---|---|---|
Percona Server moved to https://jira.percona.com/projects/PS | Status tracked in 5.7 | |||||
5.1 |
Won't Fix
|
Wishlist
|
Unassigned | |||
5.5 |
Won't Fix
|
Wishlist
|
Unassigned | |||
5.6 |
Won't Fix
|
Wishlist
|
Unassigned | |||
5.7 |
Fix Released
|
Wishlist
|
Laurynas Biveinis |
Bug Description
We discussed with Yasufumi so it may worth to try
split doublewrite area and perform IO into it in multiple IO threads.
currently it is done in single thread but in big size ( I observed 236K IO requests).
While it is good for HDD, it is bad for SSD and we need to experiment with it.
Changed in percona-server: | |
importance: | Undecided → Wishlist |
milestone: | none → 5.5-20beta |
status: | New → Confirmed |
description: | updated |
Changed in percona-server: | |
assignee: | nobody → Yasufumi Kinoshita (yasufumi-kinoshita) |
Changed in percona-server: | |
milestone: | 5.5-20beta → none |
tags: |
added: xtradb removed: innodb upstream |
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I imagine "split into dedicated small buffers for each each IO threads" currently.
But each IO requests should be dispatched when requested. I need investigation for detail