Basically: - Traditional Unix optimises for sharing resources and using them efficiently - 'multiprocessing', 'time slicing', 'resource sharing', 'garbage coll

Basically: - Traditional Unix optimises for sharing resources and using them efficiently - 'multiprocessing', 'time slicing', 'resource sharing', 'garbage collecting', etc. - Realtime: optimises for deterministic low latency. SCHED_FIFO processes that use a logical CPU and do not yield during the trading day, use money to buy more memory or crash rather than allow the GC to destroy your latency during the trading day. https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux_for_real_time/9/html/optimizing_rhel_9_for_real_time_for_low_latency_operation/index https://access.redhat.com/documentation/en-us/red_hat_enterp... is RHEL RT focused but the kernel optimisations discussed are all OSS licensed.