Boot Speed Increased: The latest version of Ubuntu 19.10 is going to launch in November 2020 and the developers announced that booting speed of Eoan Ermine has been increased than previous. The speed of boot depends on various factors, speed on loading an image from the HDD, Memory cache and CPU Memory cache and compression ratio.
The older version Ubuntu 19.04 Disco Dingo is already fast boot. The developers said the boot speed is comparatively faster than Ubuntu 19.04 Disco Dingo Edition.
The devices having 5400 rpm have able to experience the speed of the boot. The devices having 10500 rpm, the booting speed is completely negligible. The Ubuntu kernel team uses the TSC to measure the boot speed with CPU and memory usage. The compression methods, BZIP2, GZIP, LZ4, LZMA, LZMO, and XZ. BZIP2, LZMA, and XZ are slow to boot and so they are working on this to increase the boot speed of your device.
For Ubuntu 19.04, The LZ4 is the default compression ratio and so the boot speed is slightly increased for all hard disk devices. The came to the conclusion that LZ4 is the best and fastest compression method and so the Ubuntu 19.10 comes with LZ4 Compression ratio method.
The exact words are:
LZ4 is clearly much faster at decompressing compared to the current
GZIP method used in our kernels, however, the compressed kernel size is
~25% larger with LZ4 compared to GZIP. Even with slow spinny media
and a slow CPU, the long load time of the LZ4 kernel is overcome by
the far faster decompression time.
As media gets faster, the load time difference between GZIP, LZ4 and
LZO diminishes and the decompression time becomes the dominant speed
factor, with LZ4 decompressing becoming a clear compression choice.
In terms of total boot times, kernel compression choice shaves fractions
of a second (~0.29 seconds on the slow x220 and ~0.05 seconds on faster
servers). The wins are not huge, but the win is effectively a simple
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