July 2016
Beginner
320 pages
6h 32m
English
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Operating system limits
The operating system is often the last place we look to for discovering a problem. We assume that whoever set up the system has tuned the operating system for our workload and tested it under similar scenarios. This is often not the case. We sometimes need to look into the operating system itself to identify a bottleneck.
As with NGINX, there are two major areas where we can initially look for performance problems: file descriptor limits and network limits.
File descriptor limits
NGINX uses file descriptors in several different ways. The major use is to respond to client connections, each one using a file descriptor. Each outgoing connection (especially prevalent in proxy configurations) requires a unique IP:TCP port pair, ...
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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.
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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.