On Thu, 4 Mar 2010 17:31:18 +0800 Adrian Chadd <[email protected]> wrote:
>> On 4 March 2010 00:29, Tim Kientzle <[email protected]> wrote: >> >> > Interesting question: What is the impact on boot speed? >> > It could be a lot faster to load 5MB from disk and >> > decompress to a 24MB image than to wait for 24MB from >> > disk. >> >> Linear reads from disk are fast. :) Linear reads from the SPI flash >> are slower; and I think the decompression phase is quite a bit slower. >> >> I'll investigate all of this further once I've played with GEOM_ULZMA. LZMA compression optimized for fast decompression. When I compress 3M kernel on DualCore @ 1.80GHz, I wait 3-5 sec. When kernel decompressed by CFE loader on 240MHz MIPS CPU, it less than 2 sec. >> >> >> >> Adrian -- Alexandr Rybalko <[email protected]> aka Alex RAY <[email protected]> _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
