March 2025
Intermediate to advanced
496 pages
14h 57m
French
Content preview from Optimiser Java natif du Cloud, 2e édition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Annexe A. Microbenchmarking
Dans cette annexe, nous examinerons les spécificités de la mesure directe des chiffres de performance de Java de bas niveau.La nature dynamique de la JVM signifie que les chiffres de performance sont souvent plus difficiles à manipuler que ce à quoi s'attendent de nombreux développeurs.Par conséquent, il y a beaucoup de chiffres de performance inexacts ou trompeurs qui flottent sur l'Internet.
L'un des principaux objectifs de cette annexe est de s'assurer que tu es conscient de ces pièges possibles et que tu ne produis que des chiffres de performance sur lesquels toi et les autres peuvent compter. En particulier, la mesure de petits morceaux de code Java(microbenchmarking) est notoirement subtile et difficile à faire correctement, et ce sujet ainsi que son utilisation correcte par les ingénieurs de performance est un thème majeur tout au long de cette annexe.
La citation de Feynman que nous avons rencontrée au chapitre 2 est particulièrement pertinente lorsqu'elle est appliquée aux microbenchmarks.
La deuxième partie de cette annexe décrit comment utiliser l'étalon-or des outils de microbenchmarking : JMH : JMH. Si, même après tous les avertissements et mises en garde, tu penses vraiment que ton application et tes cas d'utilisation justifient l'utilisation de microbenchmarks, tu devras alors éviter de nombreux pièges bien connus en commençant par l'outil le plus fiable et le plus avancé parmi ceux qui sont disponibles.
Introduction à la mesure des ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.