How Do I Restore The Freebsd Kernel Cache?
October 27, 2021
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Recently, a number of readers announced that they were experimenting with CCache from the Freebsd core.
If you have repeatedly learned how to create the components of a FreeBSD operating program – kernel, base, or user space – this person will be interested in using the build time. Fortunately, various commercial users of Have freebsd have found different ways to speed up this build process over the course of a few days. Probably the most obvious way to save time is not to rebuild what hasn’t stopped.In this article, I want to show you several ways to achieve this from a user perspective: Kernel / Base
For assemblies, there is a way to do it all in meta mode. This helps make (1) write information that will be used for the next build into a nice, reliable .meta file such as z output, etc. make (1) does this with filemon (4) cp (required e.g. , in the next run, if the .meta file is ok, make (1) determines if the contents of that .meta file contains the same information (for example, comparing library access times and code used with the created object), otherwise the object will be recreated.
Using Metamode, I recreated HardenedBSD 12.0-CURRENT world / kernel on the Thinkpad X260 in just ten minutes.
DIRECT
dirdeps is used to generate metadata for controls created with the make (1) method. The information in these specially crafted .meta files can be used to get a dependency graph, so as not to create mostly sh (1) (for example bin / sh), but also your own (in the next case libc, libcompiler_rt, libedit, libncursesw and etc.). This function is then used to plot a complete graph against the original tree, rather than going through it unnecessarily, doing everything completely in the correct order.
This parameter implies many other parameters, including the method mentioned above, auto-building of objects, placement in a test directory, etc. Please note that its main use is to be able to quickly test fluctuations in a running system, as well as to justify that it might be more useful for development.
PUDIER And CCACHE
If you’ve recently created and maintained a repository using Poudriere, you hopefully realize that by defaultit fills in things only when needed – when versions change, Shlib increases dependencies, changes related to selected options. Even so, recompiling most of the previously created ports can be further improved with ccache (1), since the compilation is assumed to be cached (not just the results, only the metadata).
In poudriere, you can activate the feature here by setting In ccache_dir = / path / to / ccache / dir poudriere.conf . create it. Optionally, you make sure to save the ccache.conf config file that runs in it and limits the optimal cache (default 5G size) and more.
POUDRIERE + CCACHE + MEMCACHED
If your shipping box comes with more powerful options (no, our own ThinkPad won’t work), this tool might be worth using Memcached to save the results of previous builds.
If you already have ccache and poudriere installed, replace both pkg delete and suffer from poudriere-devel (3.1.99.20170310 or higher) as well as ccache -memcached-static . At the time of writing in the latest version of Powder Magazine did not have the required cache extensions and after that it requires static caching to work in buildjails without looking for circular dependencies that libmemcached.
If you haven’t followed this step, create a ccache.conf and expand these two lines:
Last but not least, do the following to activate it with start memcached:
Adjust the MB based on what your buildbox supports and also do a bulk launch to get things done.
CORE + BASE + CCACHE + Integrated Memory Cache
With ccache (1) support in the base FreeBSD build body, the next step is to find the above configuration by typing WITH_CCACHE_BUILD = yes just in src.conf enable, and using metamode, dirdeps, ccache in combination with memcached together.
ADDITIONAL READING
- The main METAMODE sjg conference during BSDCan 2011:http://www.crufty.net/sjg/blog/BuildingBSD.pdf.
- ccache (1) many different list options that can be used to optimize / tune ccache behavior.
- memcached checklist options (1) that can be selected to be enabled I authentication (sasl).
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CCACHE_STATIC_PREFIX = / usr / localRESTRICT_RESEAU = no memcached_conf = --SERVER = localhost: 11211memcached_only true # sysrc memcached_enable = YES# sysrc memcached_flags = "- l localhost -k $ megabytes"# Starting the Memcached service
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Cache Du Noyau Freebsd
Freebsd Kernel Ccache
Freebsd 커널 캐시
Freebsd Kernel Cache
Ccache Del Kernel Freebsd
Pamiec Podreczna Jadra Freebsd
Freebsd Kernel Ccache
Freebsd Kernel Ccache
Freebsd Kernel Ccache
Ccache Yadra Freebsd
