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Search Results for: software raid

InnoDB Flushing: a lot of memory and slow disk

You may have seen in the last couple of weekly news posts that Baron mentioned we are working on a new adaptive flushing algorithm in InnoDB. In fact, we already have three such algorithms in …

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Death match! EBS versus SSD price, performance, and QoS

Is it a good idea to deploy your database into the cloud? It depends. I have seen it work well many times, and cause trouble at other times. In this blog post I want to …

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Fast storage: 8 SSD Intel X-25M 80GB benchmarks

I appreciate opportunity Jos van Dongen from Tholis Consulting gave me. He granted me access to servers with 8 attached Intel X-25M 80GB MLC cards. The cards attached to 2 Adaptec 5805 raid controllers, with …

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InnoDB, InnoDB-plugin vs XtraDB on fast storage

To continue fun with FusionIO cards, I wanted to check how MySQL / InnoDB performs here. For benchmark I took MySQL 5.1.42 with built-in InnoDB, InnoDB-plugin 1.0.6, and XtraDB 1.0.6-9 ( InnoDB with Percona patches). …

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FusionIO 320GB MLC benchmarks

After my previous benchmarks of FusionIO 160GB SLC card, FusionIO team sent me for the tests another card, FusionIO 320GB MLC. I should say I really appreciate an opportunity to play with this card and …

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Three key things to know about moving MySQL into the cloud.

The question “what problems will I have when migrating to the cloud” gets asked often enough. If by cloud you mean Amazon EC2, then from a technical perspective there isn’t much that changes. The biggest …

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iiBench Contest Updates

We re-ran iiBench based on Mark Callaghan’s excellent work. We used standard InnoDB engine in MySQL 5.1 without the Google or Percona patches. Our hardware is similar to Mark’s except we used a 6-disk hardware …

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How multiple disks can benefit for single client workload ?

Let us talk few more about disks. You might have read my previous post and Matt’s Reply and it looks like there are few more things to clarify and explain. Before I get to main …

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Innodb Double Write

One of very interesting techniques Innodb uses is technique called “doublewrite” It means Innodb will write data twice when it performs table space writes – writes to log files are done only once. So why …

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First TokuMXse performance numbers

UPDATE: Since the publication of this blog post, the first release candidate of TokuMXse was made available for testing. Learn more about v1.0.0.RC.0. In addition, MongoDB has decided to call the release formerly known as v2.8, v3.0. We’ve …

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