I know that this was talked a lot and recently Mark Callaghan also gave a session in MySQL user conference 2008 about the real bottlenecks.
Other day I was testing my thread pool stuff with MySQL 5.1.24 + InnoDB plugin 1.0.1 along with other miscellaneous benchmark tests by making them CPU bound by keep the working set completely in memory to gauge the performance of threads overhead; and on 8-core box InnoDB seems to be doing better than 4-core. And then immediately I started few tests with mysqlslap by keeping complete data set in the buffer pool to get the proper timing on locking overhead.
Here is the comparison of performance on 8-core box with innodb_thread_concurrency is set to 32 and 0 for variable threads on 64-bit Redhat Linux 4 . The same box is used as 4-core by limiting the cores.
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Last Friday I received this brand new Dell Vostro 1310 laptop and it did not disappoint in anyway. I opted for this model, which is released on May 1st instead of XPS in the last minute as this is new model from DELL with completely redesigned to make it thinner and lighter than all its current models.
The laptop came almost fully loaded with the following spec:
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Intel core 2 duo 2.1G
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3G RAM
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160 GB 7200 RPM hard drive
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13.3″ 1280×800 WXGA TrueLife glossy display
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I ordered 6-cell battery, so the weight must be ~4.6LB
The major change in the system (even in DELL product line) includes:
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Sleek and attractive (the first series of Vostro is really bulky and ugly looking)
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Slot loading CD/DVD drive as that of Macbook or Macbook pro
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Touch based Media controls
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Touch based dedicated eject button for CD/DVD
The laptop seems to offer reasonable battery life based on the CNET lab tests (At least when I pulled the power, it shows 4:49 hours left on a fully charged battery).
The only disappoint is the keyboard; with home and end buttons are now controlled in combination with ‘fn’ key. Also, it could have been nice if the laptop had touch based mute button aside volume buttons instead of making it in keyboard (fn+delete). Even though I like normal 14″ laptops as it offers 1440X900 resolution; but DELL seems to be following the foot steps of Apple (13″ and 15″ models).
At least this is a welcome change from Dell concentrating on less expensive sleek and thinner design models in the business line of products which can attract college grades as well as home and business users.
You can find nice reviews about Vostro 1310 model from here:
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CNET Review