Re: [Maria-developers] MDEV-5081 - Simple performance improvement for MariaDB

2014-02-27 Thread Sergey Vojtovich
Hi Davi, thanks for this information, it is really useful. According to bzr history fast mutex was added back in 2005. I have a few guesses why it would have been needed: - probably at that time mutex implementation wasn't as good as it is now - probably mutex implementation on some specific plat

Re: [Maria-developers] MDEV-5081 - Simple performance improvement for MariaDB

2014-02-27 Thread Davi Arnaut
Hi Sergey, I looked into fast mutex in the past [1] and was never able to get a straight answer (even from the original developer) on what was the intention behind it and how it made things faster as it actually made things slower in the past (Bug#38941, others). There is a comment in http://bugs.

Re: [Maria-developers] New MariaDB builds: regular trusty and special kvm-deb-sid-pbuilder-amd and (Re: MariaDB)

2014-02-27 Thread Daniel Bartholomew
On Thu, Feb 27, 2014 at 7:04 AM, Otto Kekäläinen wrote: >> I'll start work on the Sid VMs today. > > How is it going with this? > > It is a prerequisite that needs to be in place before I can start the > process towards merging my debian/* work into upstream. I'm having some trouble with the Debi

Re: [Maria-developers] MariaDB scalability: mutexes

2014-02-27 Thread Sergey Vojtovich
Hi Axel, On Thu, Feb 27, 2014 at 01:15:14PM +0100, Axel Schwenke wrote: > Hi Svoj, > > you seemed to be interested in a OLTP benchmark with a single table, so here > it is. yes, thanks a lot! Good to see that our results go almost inline. It is also good to see that we finally outperform 5.6.10

Re: [Maria-developers] New MariaDB builds: regular trusty and special kvm-deb-sid-pbuilder-amd and (Re: MariaDB)

2014-02-27 Thread Otto Kekäläinen
Hello Daniel, 2014-02-21 17:24 GMT+02:00 Daniel Bartholomew : > I'll start work on the Sid VMs today. How is it going with this? It is a prerequisite that needs to be in place before I can start the process towards merging my debian/* work into upstream. -- Check out our blog at http://serav

Re: [Maria-developers] Debian build / multi-architecture related bugs filed

2014-02-27 Thread Otto Kekäläinen
Thanks for Elena and Sergei for looking into the issues I reported about building MariaDB on some architectures that MariaDB support! What do you people think, what kind of priority is it for MariaDB to be equally good as MySQL in terms of multi-architecture support? Should these issues be fixed n

Re: [Maria-developers] slave_ddl_exec_mode and incompatible change in MariaDB 10.0.8

2014-02-27 Thread Pavel Ivanov
On Wed, Feb 26, 2014 at 8:12 PM, Michael Widenius wrote: > Pavel> And then it said that slave died with the stack trace > > Pavel> sql/transaction.cc:139(trans_begin(THD*, unsigned int))[0x788e20] > Pavel> > sql/log_event.cc:6478(Gtid_log_event::do_apply_event(rpl_group_info*))[0x93a685] > Pavel>