Vladimir Sor

About Vladimir Sor

Vladimir Šor is a technical founder of Plumbr. “How to detect performance bottlenecks with minimal overhead? How to identify and trace down root causes with no direct access to source code?“ - these are the questions Vladimir has managed to solve and keeps solving for further Plumbr releases.

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Improving lock performance in Java

Plumbr is the only solution that automatically detects the root causes of Java performance issues by interpreting application performance data. After we introduced locked thread detection ...
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Locking and Logging

Plumbr has been known as the tool to tackle memory leaks. As little as two months ago we released GC optimization features. But we have not been sitting idle after this – for months ...
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OutOfMemoryError on overprovisioned heap

Why am I getting the OutOfMemoryError when allocating a data structure that should happily fit within the heap I have provided for the JVM? This was a question I recently faced. Indeed, ...
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How I broke our continuous deployment

This post is about a failure – more precisely about how I managed to bring our release processes to their knees. I can recommend reading especially if you are planning to ruin your ...
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Crashing your JVM

Thorough testing can be harmful as we discovered recently. Extending our test coverage led us to a several-hours debugging session caused by just one line of code. What made the debugging ...
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Stacktraces are telling the truth. But not the whole truth.

Our company is all about making the cause of software errors transparent to developers and operations. As opposed to alternative solutions, we surface the location of the problem pointing ...
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Coarse-grained benchmarking

While developing our software, we are all about metrics – even to the fact where I am pretty sure at least 10% of our posts contain a phrase “measure don’t guess”. One of those ...
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Most popular application servers

This is the second post in the series where we publish statistical data about the Java installations. The used dataset originates from free Plumbr installations out there totalling ...
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Most popular Java environments

The post is going to be the first in the forthcoming series. We start with the environments used: if you are interested which is the most popular JVM vendor or JVM version, whether ...
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Amdahl’s law illustrated

The article will explain the Amdahl’s law in simple terms. We are going to demonstrate via a case study how throughput and latency are changing when you change the number of threads ...
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