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10 Newer Entries Showing entries 91 to 100 of 220 10 Older Entries

Displaying posts with tag: Announcements (reset)

MySQL GUI: dbForge Studio for MySQL – new cutting-edge version released!
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In the new version we made a lot of improvements and added a whole pack of new features in almost all dbForge Studio’s tools. And the most remarkable thing about this release is that nearly all novelties were suggested by our users. So we hope they will enjoy working with the new version and feel that they have contributed a lot to make it as it is.

Cutting-Edge MySQL GUI Client: dbForge Studio for MySQL

With the help of our users we could work on the product on the new level, and as a result …

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MySQL GUI: dbForge Studio for MySQL – new cutting-edge version released!
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In the new version we made a lot of improvements and added a whole pack of new features in almost all dbForge Studio’s tools. And the most remarkable thing about this release is that nearly all novelties were suggested by our users. So we hope they will enjoy working with the new version and feel [...]

GUI Tool for MySQL: dbForge Studio for MySQL, v4.50.342 Released
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Changes (as compared to 4.50.339) include:
Bug fixes:
* The error on entering selection criteria after selecting Group By fields in Query Builder fixed (T26884)
* The problem with showing 0 as a parameter value instead of NULL in the parameter editor fixed (T26867)
* Removing field’s autoincrement sign on adding index in the table fixed (T24859)
* Extra new line on copying data from a cell in Data Editor removed (T27021)
* The problem with losing ON UPDATE CURRENT_TIMESTAMP during editing a table fixed (T27090)
* The problems with connecting to MySQL Server via …






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GUI Tool for MySQL: dbForge Studio for MySQL, v4.50.342 Released
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Changes (as compared to 4.50.339) include:
Bug fixes:
* The error on entering selection criteria after selecting Group By fields in Query Builder fixed (T26884)
* The problem with showing 0 as a parameter value instead of NULL in the parameter editor fixed (T26867)
* Removing field’s autoincrement sign on adding index in the table fixed (T24859)
* Extra new line on copying data from a cell in Data Editor removed (T27021)
* The problem with losing ON UPDATE CURRENT_TIMESTAMP during editing a table fixed (T27090)
* The problems with connecting to MySQL Server via SSH tunnel …






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On TRIM, NCQ, and Write Amplification
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Alex Popescu wrote a blog post asking some questions about RethinkDB and SSD performance. There is a related Twitter conversation happening here. There are two fundamental questions:

  • In which cases does SSD performance begin to degrade over time?
  • How does the TRIM command affect performance degradation?

The questions are very deep and I cannot do them justice in a single blog post, but I decided to post a quick write-up as …

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MySQL Workbench 5.2.33 GA Available
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The MySQL developer tools team announces the next release of it’s flagship product, MySQL Workbench – version 5.2.33. This is a maintenance release only which corrects some problems we didn’t cover in last release. It contains fixes for 7 bugs or enhancement requests.

As always, we want to thank everyone for the great feedback we have received. This helps us to continuously improve the functionality and stability of MySQL Workbench – we appreciate all your ideas for improving MySQL Workbench.  Please keep sending us your ideas!

MySQL Workbench 5.2 GA

  • Data Modeling
  • Query (replaces the old MySQL Query Browser)
  • Administration …
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MySQL Workbench 5.2.32 GA Available
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We’re proud to announce the next release of MySQL Workbench, version 5.2.32. This is a maintenance release featuring
a new and improved UI appearance and several corrections and other enhancements.

The tabbed interface has been refreshed to obtain a clearer separation between different modules of Workbench, while improving responsiveness when switching between tabs. The Query Formatter has been rewritten and is now faster and more robust on its handling of queries. The layout of the Administration module has been changed to allow for easier future expansion and use less vertical screen space. Parts that had problems managing MySQL 5.5 servers have been fixed along other total of 53 …


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RethinkDB internals: the caching architecture
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A few days ago Salvatore Sanfilippo wrote about his work on a new Redis diskstore – a reworking of the old VM layer based on a different set of assumptions and tradeoffs. I was very interested in the new approach because it is very similar to the RethinkDB caching architecture in principle. When we designed our caching layer we had a number of constraints we needed to satisfy:

  • Performance – the system needed to work …
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Handling stack overflow on custom stacks
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On my computer, the callstack of a new process is around 10MB*. Modern operating system automatically reserve some amount of virtual memory and install protections on the page below the stack to create a segmentation fault on stack overflow. This ensures that a stack overflow won’t go corrupting random parts of memory.

We want to have a lot of coroutines, so they should have smaller stacks, maybe 16 or 64KB. This makes stack overflow an even greater possibility, but at the same time, coroutines implemented in user space don’t get this checking for free—we have to build it ourselves. In the process, we can even do better: we can give …

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Making coroutines fast
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Previously, I wrote about using coroutines in RethinkDB. Coroutines are a nice alternative to callbacks because they are easier to program in, and they are a nice alternative to threads because of their greater performance. But how fast are they?

Just using an off-the-shelf library like libcoroutine isn’t as fast as you might think. The graph below shows the huge performance degradation of a naive implementation of coroutines (the short red bar) compared to the old callback-based code (the blue bar on the left). But with the right set of …

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10 Newer Entries Showing entries 91 to 100 of 220 10 Older Entries

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