| Headlines |
| 2021-11-15 |
FreeBSD improves boot times |
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The FreeBSD project has published a new Quarterly Update which lists ongoing work and improvements to the FreeBSD operating system. One of the impressive feats mentioned in the report is the halving of FreeBSD's boot times in some environments. "Colin Percival is coordinating an effort to speed up the FreeBSD boot process. For benchmarking purposes, he is using an EC2 c5.xlarge instance as a reference platform and is measuring the time between when the virtual machine enters the EC2 "running" state and when it is possible to SSH into the instance.
This work started in 2017, leading to a conference presentation, 'Profiling the FreeBSD kernel boot', and quickly yielded roughly 4850 ms of improvements (starting from a baseline of about 30 seconds).
Since June, another roughly 9790 ms of time has been shaved off the boot process, taking it down to approximately 15 seconds. There is still more work to be done; in particular, while the loader and kernel have been profiled, the TSLOG system Colin is using does not currently support userland profiling." Additional information can be found in the project's report. |
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