Hey, this is great news. Thanks for sharing this great news with us.

Hey, this is great news. Thanks for sharing this great news with us.

This is to follow up my previous post with kernel_mutex problem.

First, I may have an explanation why the performance degrades to significantly and why innodb_sync_spin_loops may fix it.
Second, if that is correct ( or not, but we can try anyway), than playing with innodb_thread_concurrency also may help. So I ran some benchmarks with innodb_thread_concurrency.

My explanation on the performance degradation is following:
InnoDB still uses some strange mutex implementation, based on sync_arrays (hello 1990ies), I do not have a good reason why it is not yet replaced.
Sync_array internally uses pthread_cond_wait / pthread_cond_broadcast construction, and on pthread_cond_broadcast call, all threads, competing on mutex, wake up and start …

This week Sheeri visits the Schooner offices and inteviews Dr John Busch, the CTO, Founder, and Chairman of the Board for Schooner. Schooner is able to fully use multi-core processors and do fully synchronous replication without losing performance. The new 5.1 release offers parallel synchronous replication with automated failover between remote data centers.

News
Both Sheeri and Gerry have new jobs - Sheeri wrote about her change at http://palominodb.com/blog/2011/11/23/last-day-palominodb

read more

We have lately been talking about some upcoming features that we feel are important to MariaDB users, because the corresponding ones that will be provided with MySQL will be incompatible with MariaDB and closed source.

We’re happy to announce the following:

• The next version of MariaDB, version 5.2.10 will include an open source PAM Authentication Plugin. MariaDB 5.2.10 is scheduled for release next week.
• A Windows Authentication Plugin is in development and QA currently and will be part of MariaDB 5.2.11, which is scheduled for release before Christmas.
• MariaDB 5.5 will include both of the above plugins and an open source thread pool implementation. The soon-to-be-launched first version however will not include the thread pool.

Stay tuned for more information as soon as we start …

We are pleased to announce that MySQL Enterprise Monitor 2.3.8 is now available for download on the My Oracle Support (MOS) web site as our latest GA release. It will also be available via the Oracle Software Delivery Cloud in approximately 1-2 weeks. This is a maintenance release that fixes a number of bugs. You can find more information on the contents of this release in the changelog:

http://dev.mysql.com/doc/mysql-monitor/2.3/en/mem-news-2-3-8.html

You will find binaries for the new release on My Oracle Support:

https://support.oracle.com

Choose the "Patches & Updates" tab, and then use the "Product or Family (Advanced Search)" feature.

And from the Oracle Software Delivery Cloud (in about 1-2 weeks):
…

We are pleased to announce that MySQL Enterprise Monitor 2.3.8 is now available for download on the My Oracle Support (MOS) web site as our latest GA release. It will also be available via the Oracle Software Delivery Cloud in approximately 1-2 weeks. This is a maintenance release that fixes a number of bugs. You can find more information on the contents of this release in the changelog:

http://dev.mysql.com/doc/mysql-monitor/2.3/en/mem-news-2-3-8.html

You will find binaries for the new release on My Oracle Support:

https://support.oracle.com

Choose the "Patches & Updates" tab, and then use the "Product or Family (Advanced Search)" feature.

And from the Oracle Software Delivery Cloud (in about 1-2 weeks):
…

MySQL Enterprise Monitor Advisors version 2.3.8.2124 is now available.

MySQL Enterprise Monitor Advisors version 2.3.8.2124 is now available.

Talend delivers v5. Zentyal raises series A. The TCO of OSS. And more.

# Talend announced version 5 of its data integration suite, adding business process management capabilities via an OEM relationship with BonitaSoft. Yves De Montcheuil explained the name changes in version 5.

# Zentyal closed a series A venture capital funding of over $1m by Open Ocean …