Performance
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Core Java
How to estimate memory consumption?
This story goes back at least a decade, when I was first approached by a PHB with a question “How…
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Core Java
Want to get faster with AtomicLong? Make it wait.
I often hear that Java atomic types (java.util.concurrent.atomic) are super-fast and play nicely with highly concurrent code. Most of the…
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Core Java
How to serialize an array of doubles with a byte (binary delta encoding for low-varianced monotonic sets of floating point data)
Low latency systems require high performance message processing and passing. As in most cases data has to be transfered over…
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Software Development
MongoDB “Lightning Fast Aggregation” Challenged with Oracle
What does “Scale” even mean in the context of databases? When talking about scaling, people have jumped to the vendor-induced…
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Software Development
Performance tuning – measure don’t guess
In my performance tuning career I have given the advice to measure and not guess more often than I can…
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Software Development
Throughput and latency: performance tuning made simple
Many of our previous topics have measured the behaviour of certain systems in terms of either latency or throughput. As…
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Core Java
Investigating Memory Leaks Part 2 – Analysing the Problem
The first blog in this mini-series looked at creating a very leaky sample application, so that we can investigate techniques…
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Core Java
(Part 1 of 3): Synopsis of articles & videos on Performance tuning, JVM, GC in Java, Mechanical Sympathy, et al
I have been contemplating for a number of months about reviewing a cache of articles and videos on topics like Performance…
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Core Java
Investigating Memory Leaks Part 1 – Writing Leaky Code
I found this little problem the other day: there’s this server that runs for a while and then falls over.…
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