The author wrote further down in the article under the heading "Performance Without Sacrifice":
>>Unfortunately, higher-level languages are often not a great fit for systems code. Systems code is often performance critical (e.g., kernels, databases), so the developer wants predictable performance, and tight control over memory allocation/de-allocation and data layout. This can be hard to achieve in higher-level languages or when using a garbage collector.
>>Unfortunately, higher-level languages are often not a great fit for systems code. Systems code is often performance critical (e.g., kernels, databases), so the developer wants predictable performance, and tight control over memory allocation/de-allocation and data layout. This can be hard to achieve in higher-level languages or when using a garbage collector.