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Difficulty: Very Hard
Category: systems
Practice quant interview questions from top firms including Jane Street, Citadel, Two Sigma, DE Shaw, and other leading quantitative finance companies.
Topics: systems, memory-management, c++
Low-latency trading systems often bypass the operating system kernel to manage memory directly, reducing translation lookaside buffer (TLB) misses and avoiding non-deterministic page faults. A common technique is to pre-allocate a pool of 2MB "huge pages" and manage them in userspace using a buddy memory allocation algorithm. This ensures deterministic, microsecond-level latency for high-frequency trading applications. Task Implement a BuddyAllocator class that manages a contiguous virtual memo
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