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Testing Virident FlashMAX 1400
I still continue to run benchmarks of different SSD cards. This time I show numbers for Virident FlashMAX 1400. This is a MLC PCIe SSD device. There are couple notes on these results. First, this time...
View ArticleHow Percona Toolkit divides tables into chunks
The tools we’ve redesigned in Percona Toolkit recently have moved away from a legacy technique for operating on small numbers of rows at a time, towards a more reliable and predictable method. We call...
View ArticleLoad management Techniques for MySQL
One of the very frequent cases with performance problems with MySQL is what they happen every so often or certain times. Investigating them we find out what the cause is some batch jobs, reports and...
View ArticleHelsinki MySQL User Group on May 29
The Helsinki MySQL User Group will meet at the usual place on May 29th. Click here for details and to RSVP. Linas Varbalas will talk about Tungsten and maybe dare a live demo! Linas is in town for the...
View ArticlePortable Tablespace in InnoDB I test it PART2
Overview After testing ... in my previous article (Portable Tablespace in InnoDB I test it!) I was thinking... But how much that will really cost? How long it will take porting the table space? What...
View ArticleRunning out of disk space on MySQL partition? A quick rescue.
No space left on device – this can happen to anyone. Sooner or later you may face the situation where a database either has already or is only minutes away from running out of disk space. What many...
View ArticleForecast: Sunny. At midnight.
With summer solstice approaching, we're taking Tungsten to the land of midnight sun, Finland. On Tuesday, May 29th, Linas Virbalas (Sr. Software Engineer) will be talking about and demonstrating...
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Temporary file behavior… (and how lsof save my life)
I would like to share this story based on a true event about the temporary files behavior in MySQL. MONyog reports this error to my already full mailbox several times a day : 1 – Catch the query (if...
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Testing Fusion-io ioDrive – now with driver 3.1
In my previous post with results for Fusion-io ioDrive we saw some instability in results, I was pointed that it may be fixed in new drivers VSL 3.1.1. I am not sure if this driver is available for...
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mySQL 5.6 looks very promising
I have been doing some research lately on various mySQL related features and found myself distracted by mySQL 5.6. If everything that I am reading is correct, this should be the best mySQL version...
View ArticlePortable table space part III or We can do it (with partition)
Portable table space part III or We can do it (with partition) First of all, I have to say that as usual I did the three investigation, because I had fun. MySQL is still fun for me, and also if I am...
View ArticleIntroducing Zend DBi as a MySQL Replacement on IBM i
You might have heard that Oracle made the decision not to support MySQL for IBM i any longer. This is certainly understandable. However, there are still users who want to continue running IBM i and...
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On-line add-node with MCM; a more complex example
I’ve previously provided an example of using MySQL Cluster Manager to add nodes to a running MySQL Cluster deployment but I’ve since received a number of questions around how to do this in more complex...
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Article 9
The MySQL Connect conference call for papers is closed and the response was amazing. Now the problem is that we have a few hundred great session and only two days and nights to get everything...
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How To – Fix MySQL Option Without Preceding Group
Background Knowledge You try starting, stopping or connecting to MySQL and receive the following error, “Error: Found option without preceding group in config file:...
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How to exclude a database from your dump with ZRM (MySQL Community help needed)
Last month, Ronald Bradford, Giuseppe Maxia and Mark Leith spoke about how to simulate a mysqldump –ignore-database. This mysqldump option doesn’t exist and these three guys have given us various...
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Making connection accept faster
Domas documented a few things we needed to fix to make MySQL faster at accepting connections. Someone new to the team, Yongqiang He, spent a few weeks implementing some of the suggestions and the...
View ArticleWebinar: MySQL and SSD
Just as a reminder – tomorrow, May-9, 2012, at 11am PDT I will be giving a free webinar “MySQL and SSD”. This is the same talk I gave on Percona Live MySQL Conference, so if you were there – you...
View ArticleZero-downtime schema changes webinar recording
The recording and slides for my webinar on zero-downtime schema changes with MySQL are available now. Don’t miss Vadim’s webinar tomorrow!PlanetMySQL Voting: Vote UP / Vote DOWN
View ArticleMySQL 5.0 can deadlock when flush logs, show processlist, and a slave...
[ Note: I haven't fully investigated this problem but the post has been hanging around in my queue for months. Rather than have it rot there I am publishing what I know in hopes that it helps someone...
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