On Thu, Mar 23, 2017 at 5:51 AM, Chao Peng <chao.p.peng@xxxxxxxxxxxxxxx> wrote: > Compressed kernel has its own drawback: uncompressing takes time. Even > though the time is short enough to ignore for most cases but for cases that > time is critical this is still a big number. In our on-going optimization > for kernel boot time, the measured overall kernel boot time is ~90ms while > the uncompressing takes ~50ms with gzip. > > The patch adds a 'CONFIG_KERNEL_RAW' configure choice so the built binary > can have no uncompressing at all. The experiment shows: > > kernel kernel size time in decompress_kernel > compressed (gzip) 3.3M 53ms > uncompressed 14M 3ms How about the time difference for bootloader to read kernel from flash/disk/network to ram? Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
