← Back to team overview

maria-developers team mailing list archive

Re: [Merge] lp:~maria-captains/maria/maria-xtradb into lp:maria



Ok, thank you.

Please let me know if some code changes required from our side!

Kristian Nielsen wrote:
Kristian Nielsen <knielsen@xxxxxxxxxxxxxxx> writes:

I think there are two issues here.

One is that we are replacing InnoDB with XtraDB in MariaDB. Thus we need
XtraDB to build and work on all the platforms that MariaDB should work on.

The other is to get good performance/scalability of XtraDB. This is very
important on the major platforms, but maybe not on all platforms.

So it seems that right now XtraDB relies on GCC intrinsics for the performance
improvements. I personally think this is fine. We can build with GCC on the
main performance platforms I think. The main non-GCC platform currently is
Windows, so we need XtraDB to build and work with non-GCC, but I think for now
8CPU+ scalability on Windows is not the most important priority.

Later we can then add Windows method for scalability, or maybe switch to also
build with GCC on Windows.

I am not sure what to do with this, I also need to look into
InnoDB-plugin 1.0.3, what solution they have and may be use new InnoDB
rw_locks instead of ours. Anyway - this is something to discuss.

I will also look closer as time permits, checking the ./configure tests
(already discussed this a bit with Sergei Golubchik) and the build failures
when INNODB_RW_LOCKS_USE_ATOMICS is not defined.

Just to avoid duplicate work, let me just mention that I am now starting to
look into this issue. I will try to find a good way to make XtraDB
compile/work on all the platforms/compilers we want to support, and report
back what I discover.

 - Kristian.

Vadim Tkachenko, CTO
Percona Inc.
ICQ: 369-510-335, Skype: vadimtk153, Phone +1-888-401-3403
MySQL Performance Blog - http://www.mysqlperformanceblog.com
MySQL Consulting http://www.percona.com/