How long does it take for anything at all to show up on the display? In the third deliverable we mention the effect of most hotspots, the procedure used for testing them and their bootcharts. Uninvestigated speedups This section is a holding pen for ideas for improvement that are not implemented yet but that could result in a boot time gain. It has to do with removing the swap partition. Not only will this give you a good list of modules, it will illustrate for you what is happening during your system boot. .
Anyway, I like your quick view above so much that I'm going to save it in a file on my servers. Reorder it manually does not know about your preferences what services should be started fasted, like your login manager for example. This article doesn't attempt to define boot-time. Plus, should I need to install anything, I just mount my root partition, chroot onto it, perform the required operations, and exit. This might need some hardware knowledge and has to be customized to the individual memory devices used. Removing hotplug will vary depending upon the distribution you use. There are two main ways that disk devices can be brought online in Linux for s390.
Splash is added to indicate that system is getting ready - quite useful if system takes long to boot. The commands used in this environment is a stripped down Unix system provided by the busybox etc. Building a snappy desktop machine to deliver blazing performance for amazing your friends 2. You are free to examine their content and modify them as you wish etc. Please switch there and provide the output of systemctl list-jobs, ps aux and journalctl -alb -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth? These modules can be inserted into the kernel when they are really needed. Using Linux just for a desktop? It is quite common for the filesystems to be built for generic architectures. Manual tweaking may be probably needed.
Increasing available system memory at boot time It is possible to increase available system memory at boot time by reducing reserved memory allocated to video subsystems. Are we talking less than a second? A solution could be to create a dedicated fs system, which supports only one or maybe 2 filesystems, and eliminates the abstraction overhead. Analyzing the boot process You can analyze the boot process and where time is spent using. This can affect both the kernel boot time as well as user-space startup. Copy sent to Debian systemd Maintainers , Marco d'Itri. The original, by IsaacKuo, is located here: It has been a base for building this solution to a huge extent.
However, I think a kernel parameter option conflict might appear when the two are run in parallel. When the root filesystem used on the device is a flash memory card or flash memory as will often be the case, the performance bottleneck will often be write access to the root file system. Regardless of how attractive or well designed a consumer electronic device is, the time required to move the device from off to an interactive, usable state is critical to obtaining a positive end user experience. If they aren't the same, the script is likely to be named after the daemon it launches, so you can try just checking directly for man. This problem is addressed in Debian bug report 620095, and the fix for this problem is trivial.
It also walks through different techniques that can be used to optimize the boot time. Keeping the boot process as similar as possible across architectures is a good thing! Update compiler flags to build it for armv7-a. This helps in determining the time spent in each stage. It is common to see the balance shift on either side during the optimization cycles. These default configurations become starting point for creating a product specific configuration.
I've used the package of prelink from debian in unstable and we get no significant time improvement. Running a Debian system from only a single medium e. Live-initramfs seems to handle this process using hooks - I am going to look into that soon and see if it is possible to port my little package to hooks to avoid diversions. A second problem is a lack of recognition for a 3380 device attached to a 3880 control unit. A summary of the changes between this version and the previous one is attached.
Build for product The default configuration of u-boot and the Linux kernel is friendly for development systems - not the end products. This allows you to start, stop, restart, reload, etc. It never could find the partition before. Most of the filesystems are derived from the desktop based systems that may not apply to embedded systems. I wrote a script to run on debian following this tutorial, but the software needs root access to output the right things. The deliverable is available With the alioth sever down, it seems our project webpage is down as well. A framebuffer driver for the kernel is required.