#Tlb-Shootdown

2 posts

Low-Latency Systems Development Topic November 4, 2026 15 min read

Context Switches, Page Tables and the TLB

Threads are lighter than processes because the TLB and caches stay usable after the switch, not because the switch itself is cheaper. The TLB has no MESI: when any thread in a process changes the page tables, every core still …

#linux #context-switch #page-table #tlb #pcid

Low-Latency Systems Development #3 September 17, 2026 16 min read

Memory Pools and Allocators

Every technique in this post does the same thing at a different layer: move an uncertain, kernel-involving operation off the hot path and force it to happen once, upfront, before it can ambush a single request. An object pool …

#cpp #memory-pool #allocator #mlock #tlb-shootdown