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本文详细介绍了Gentoo实时系统的配置过程，重点解析了gentoo systemd的使用方法。通过实践操作，深入探讨了如何优化系统设置，提升系统性能和响应速度。

本文目录导读：

1. 实时系统概述
2. Gentoo实时系统配置步骤

随着计算机技术的不断发展，实时系统在各个领域的应用越来越广泛，Gentoo作为一种高度可定制的Linux发行版，提供了丰富的实时系统配置选项，使得用户可以根据自己的需求进行深度优化，本文将详细介绍如何在Gentoo系统中进行实时系统配置，帮助读者打造一个高效、稳定的实时环境。

实时系统概述

实时系统（Real-Time System，简称RTS）是指系统的响应时间具有严格限制的计算机系统，实时系统可以分为硬实时系统和软实时系统，硬实时系统要求在规定的时间内必须完成数据处理和响应，否则会导致系统崩溃或产生严重后果；软实时系统则对响应时间的要求相对宽松，但仍然需要在一定的时间范围内完成。

Gentoo实时系统配置步骤

1、选择合适的硬件

实时系统的性能与硬件密切相关，在选择硬件时，应考虑以下几点：

（1）处理器：选择具有较高频率和较大缓存的高速处理器。

（2）内存：选择高速、低延迟的内存条，并确保内存容量足够。

（3）硬盘：使用SSD硬盘，以提高系统启动和文件读写速度。

2、安装Gentoo基础系统

（1）下载Gentoo安装镜像，并刻录到U盘。

（2）启动计算机，进入BIOS设置，调整启动顺序，将U盘设置为第一启动设备。

（3）按照Gentoo安装指南，进行分区、格式化、挂载等操作。

（4）安装基本系统文件，配置网络、SSH等。

3、配置内核

实时系统的核心在于内核，Gentoo提供了多种实时内核选项，如PREEMPT_RT、RTAI等，以下以PREEMPT_RT为例，介绍如何配置实时内核：

（1）安装内核源码：

emerge gentoo-sources

（2）安装实时内核补丁：

emerge sys-kernel/rt-sources

（3）配置内核：

make menuconfig

在内核配置界面中，启用以下选项：

[*] Preemption Model ( Fully Preemptible [RT] Kernel )
[*] Preemptable Kernel (Low-Latency Desktop)
[*] High Resolution Timer Support
[*] Real Time Clock - System Clocks
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_irc
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ponde
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_tftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_udplite
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_teredo
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_sctp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtsp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_quic
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtmp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_pptp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ppl
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_h323
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_fou
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack expectations
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack ftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack irc
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ponce
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_tftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_udplite
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_teredo
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_sctp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtsp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_quic
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtmp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_pptp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ppl
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_h323
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_fou
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack expectations
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack ftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack irc
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ponce
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_tftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_udplite
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_teredo
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_sctp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtsp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_quic
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtmp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_pptp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ppl
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_h323
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_fou
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack expectations
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack ftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack irc
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ponce
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_tftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_udplite
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_teredo
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_sctp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtsp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_quic
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtmp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_pptp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ppl
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_h323
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_fou
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack expectations
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack ftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack irc
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ponce
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_tftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_udplite
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_teredo
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_sctp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtsp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_quic
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_rtmp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_pptp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ppl
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_h323
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_fou
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack expectations
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack ftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack irc
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_ponce
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_tftp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_udplite
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_teredo
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack_sctp
[*] Networking options -> Network packet filter -> Netfilter -> nf_conntrack

本文标签属性：

Gentoo实时系统：gentoo genkernel

systemd性能优化：systemnanotime性能问题

Gentoo实时系统配置：gentoo systemd