November 2017
Intermediate to advanced
494 pages
14h 29m
English
Content preview from Mastering Proxmox - Third Edition
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PG
The main function of a PG is to combine several objects into a group and then map the group to several OSDs. A per-group mechanism is much more efficient than a per-object mechanism, since the former uses fewer resources. When data is retrieved, it is far more efficient to call a group than to call an individual object in a group. The following diagram shows how PGs are related to OSDs:
For better efficiency, we recommend a total of 50 to 100 PGs per OSD for all pools. Each PG will consume some resources of the node, such as CPU and memory. A balanced distribution of PGs ensures that all the nodes, and OSDs in the nodes, are not out of ...
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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.
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.