https://outofsrvc.github.io/en/tags/fragmentation/Recent content in Fragmentation on P01NTHugoenWed, 26 Aug 2026 00:45:00 +0300https://outofsrvc.github.io/en/os/os-0x5/Wed, 26 Aug 2026 00:45:00 +0300https://outofsrvc.github.io/en/os/os-0x5/<p>بسم الله</p> <p>After talking about scheduling in the <a href="../os-0x4/">previous lesson</a>, today we move to one of the pillars of operating systems: main memory management. We already touched a practical side of it in the <a href="https://outofsrvc.github.io/en/cworkshop/virtual-memory-stack-vs-heap/">virtual memory lesson</a> of the C workshop; this lesson is the theoretical foundation it all rests on.</p> <h2 id="background">Background</h2> <p>A modern OS must allow large numbers of processes to sit in memory simultaneously for concurrent execution — and that is what makes memory management complex. There is quite a range of memory-management algorithms, and most require special forms of hardware support.</p>