COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION To do its job, the OS maintains a number of queues. Each queue is simply a waiting list of processes waiting for some resource. The long-term queue is a list of jobs waiti…
1. Multiprogramming system provide an environment in which the various resources (like CPU,memory,and peripheral devices) are utilized effectively,but they do not provide for user interaction with the computer system. 2. Time sharing(or multitasking)…
http://tleyden.github.io/blog/2014/10/30/goroutines-vs-threads/ Here are some of the advantages of Goroutines over threads: You can run more goroutines on a typical system than you can threads. Goroutines have growable segmented stacks. Goroutines ha…
COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION Both unequal fixed-size and variable-size partitions are inefficient in the use of memory. Suppose, however, that memory is partitioned into equal fixed-size chunks that a…
http://blog.packagecloud.io/eng/2016/06/22/monitoring-tuning-linux-networking-stack-receiving-data/ Jun 22, 2016 • packagecloud Tags: packagecloud linux kernel networking optimization tuning monitoring TL;DR This blog post explains how computers runn…
3)qemu帮助信息 qemu-kvm -h [root@Centos72 libvirt]#qemu-kvm -h QEMU emulator version (qemu-kvm--.el7_5.), Copyright (c) - Fabrice Bellard WARNING: Direct use of qemu-kvm from the command line is not supported by Red Hat. WARNING: Use libvirt as the stabl…
No one can do all things, learn to be good at use what others already did. Most computers have two modes of operation: kernel mode and user mode. The OS is the most fundamental piece of software and runs in kermel mode(also called usperivosr mode). I…
Ceph Tuning and Best Practices for All Flash Intel® Xeon® ServersLast updated: January 2017 TABLE OF CONTENTS (must be done on all Ceph nodes) INTRODUCTION Ceph is a scalable, open source, software-defined storage offering that runs on commodity har…
