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This post was written by a LEDAS developer in his own blog, and now we repost it here. Focus on performance is the major goal in our projects, and we are going to publish more posts on this topic.

It is well-known that Debug build in Visual C++ is very slow compared to Release build, with the typical ratio about 10-20 times. Various reasons behind it are often stated, and some people even believe that it is inevitable because it is caused by lack of compiler optimizations.

If some issue happens only on a large dataset or in a real-time application, and it cannot be extracted into a smaller test case, then developer is forced to debug Release build. Which is rather painful ...

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• C++
• msvc
• debug
• release