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Explore the intricacies of TCP socket management in the Linux kernel and learn about a solution to mitigate performance degradation caused by socket lookup issues. Dive into how global hash tables for TCP and UDP affect socket lookup times, and understand the concept of 'Noisy Neighbours' in multi-workload environments. Discover the relationship between the number of TCP sockets and single TCP connection performance. Finally, examine the per-netns hash table solution proposed by Kuniyuki Iwashima, which was merged in Linux kernel v6.1, designed to address socket lookup degradation and improve workload isolation.
