Power-saving FEDORA host

Power-saving FEDORA host-Linux Enterprise Application-Linux server application information. The following is a detailed description. What is "power saving "?

However, if you have played a server, you will know the importance of power saving (especially when you see a power bill)

Here we mainly compare the user habits and do not compare the least power consumption of the host (because we know that the CPU is getting more and more power-saving, but the display card is getting more and more power consumption)

So, let's first think about the power consumption of a host? (For PC, NB will not be discussed first)

Most audio chips (ac97......) on the current motherboard are mainly dependent on the display card, CPU, optical drive, hard drive, and so on.

As long as someone who has experienced the PIII period has seen such a product, it is called "three in one. What is three in one? Is to integrate the display card, sound card on the motherboard (commonly known as the ONBOARD)

This type of host will be power-saving, because there is no need to add an AGP or PCI-E display card (high power consumption)

Now let's build what the host needs, preferably using the obsolete old host, unless you want to help the company set up a large host, generally, this type of host already has supporting hardware.

The home host, for the author, is equipped with the old amd xp 1800 + 256 MB + NV440. The operating system is dominated by FEDORA6 (because the FREE and mb ram is in the M $ system is actually ....)

During installation, the computer is equipped with the same (for convenience) as the general computer. This section describes how to save power. The focus is on the installation after the installation, because a host requires complete configuration in addition to the installation.

If the host service has no major problems or is not attacked by hackers:

The optical drive, display, keyboard, and mouse can be left empty. Some people may have doubts about how to start the system like this. You only need to manually set the BIOS to ignore all the errors, and then you can start the system (there is a relative risk)

What should I do if I want to maintain it?

In fact, encrypted SSH or remote control software of VNC can be used to achieve (TELNET is too dangerous) (PUTTY, REALVNC on M $... and other software available for connection) but security also requires supporting measures (for example, only users with limited LAN can connect through SSH) even if the host does not need to output, enter (display, keyboard, mouse... and so on. We can maintain the device as well.

Why can a host use this feature? Because the main function of the host is to provide services, these peripheral devices are unnecessary.

As long as the network card of the host is in good condition and the network connection status is normal, you can use WINDOWS or LINUX to connect to the host to maintain the host (only the administrator of the host can use the host)

In addition to hardware reduction, you can also start from the software. I am not very familiar with this part, but in terms of concept, we can use the LINUX core re-compilation to reduce the core. In the current LINUX version suite, after the pre-installation is complete. Many host services that are not necessarily required are started. When the host is running, it also increases the burden on the host (re-compile the core, you need to understand the software dependency and it takes a long time, refer to the documents of laruence)

According to the author's test, the electricity bill can be saved by several hundred yuan a month for my home host. Of course, it can save, otherwise it will be hard-earned!

PS: The instruction file for remote connection settings of laruence is attached. After all, security is very important!