Posts Categorized: Pythian

Test-Driving Reflex

At work, we have a need for a little job daemon that would poll jobs and process them. But there is more than one type of job, so the solution that we need will have to be a little more complex. To get to my goal, I decided that I would have a generic Poller class. For each type of job to monitor and run, I will create a different object with parameters to tell it how often to poll, how to poll, and what to do with the stuff it polls. Sounds good? Perfect, then let’s go.

Testing and Analyzing Performance with Benchmarks

Generic benchmark tools can be very useful for testing performance on your system. These benchmark tools normally have a set of predefined workloads, but often they don’t match your specific workload in useful ways. One of the best ways to reproduce your workload is to have a good sense of the application that uses the…

My First Experience Running SLOB – Status Update 2 (first results)

I think the results we got so far may surprise you. At lease they don’t seem to be the results +Alex Gorbachev and +Kevin Closson expected to see. You can find the first related blog post here. It will give you the necessary context for further reading. Just to recap: +Kevin Closson says that “Orion may give It’s VERY easy to get huge Orion nums but reasonable SLOB” and +Alex Gorbachev says that “lots of the system IO bound below the CPU level so you should see similar number with Orion or SLOB”. Let’s see what the first results revealed.

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