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  Why mmap is faster than system calls

  

  medium.com

  Why mmap is faster than system calls

          When I ask my colleagues why mmap is faster than system calls, the answer is inevitably “system call overhead”: the cost of crossing the boundary between the user space and the kernel. It turns out that this overhead is more nuanced than I used to think, so let’s look under the hood to understand the performance differences.
  

  computer science programming

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• Issues #174 Oct 26, 2020

More like this (3)

• But How, Exactly, Do Databases Use mmap?

  

  brunocalza.me

  In a previous post Discovering and exploring mmap using Go, we talked about how databases have...

  In a previous post Discovering and exploring mmap using Go, we talked about how databases have a major problem to solve, which is: how to deal with data stored in disk that is bigger than the available memory. We talked about how many databases solve this problem using memory-mapped files and explored mmap capabilit...

  boltdatabasemmap

  2
• Discovering and exploring mmap using Go

  

  brunocalza.me

  Discovering and Exploring mmap using Go — mmap is a system call for mapping files into...

  Discovering and Exploring mmap using Go — mmap is a system call for mapping files into memory which can provide a neat abstraction for working with both. Here’s how to use it in Go along with when you shouldn’t.

  databasegolangmmapvirtual memory

  2
• 

  Why mmap is faster than system calls – by Alexandra (Sasha) Fedorova

  

  medium.com

  When I ask my colleagues why mmap is faster than system calls, the answer is inevitably...

  When I ask my colleagues why mmap is faster than system calls, the answer is inevitably “system call overhead”: the cost of crossing the boundary between the user space and the kernel. It turns out that this overhead is more nuanced than I used to think, so let’s look under the hood to understand the performance dif...

  computer scienceprogramming

  1