DMA on Ciência Programada https://cienciaprogramada.com/tags/dma/ Recent content in DMA on Ciência Programada Hugo -- gohugo.io en contato[@]cienciaprogramada.com.br (Francisco Bustamante) contato[@]cienciaprogramada.com.br (Francisco Bustamante) © 2026 Francisco Bustamante Tue, 12 May 2026 00:00:00 +0000 Input and Output: How the Computer Talks to the World https://cienciaprogramada.com/2026/05/input-output/ Tue, 12 May 2026 00:00:00 +0000 contato[@]cienciaprogramada.com.br (Francisco Bustamante) https://cienciaprogramada.com/2026/05/input-output/ Busy-waiting on a 10 ms disk, a 1 GHz CPU wastes ten million cycles. We compare the three ways of handling input and output (polling, interrupts, and DMA), calculate the overhead of each one, and see why polling came back with NVMe SSDs.