On Wed, 15 Mar 2017 16:17:31 -0500 Timothy Pearson <tpear...@raptorengineering.com> wrote:
> On 03/15/2017 04:09 PM, Daniel Kulesz via coreboot wrote: > > Hi, > > > > I wanted to try caching of the MRC training data. As described in Timothy's > > post, I commented the following line: > > > >> allow_config_restore = 0; > > > > However, I was not able to measure any effects regarding boot time. Does > > this setting only work with cbfs enabled? And if so, is it necessary to set > > additionally any cbfs variables? > > > > Cheers, Daniel > > You will need NVRAM enabled for this setting to work. Additionally, > there is some instability when this line is uncommented; when I have > some free time available I'll take another look at why. Many thanks - this did the trick! Boot time decreased from 71s to 30s now. Finally, coreboot boots up twice as fast as the vendor bios on the KGPE-D16! @Timothy: Regarding the mentioned instability: Have you tested for its presence after we applied this "revert fix" for the MCT failures? I've been running "memtester 10G" + "stress-ng --cpu 0" for around 20 minutes now but could not observe any failures, instabilities or dmesg entries so far. @Paul: Have you tried this setting as well? If yes - would you like to share your experience? Cheers, Daniel -- coreboot mailing list: coreboot@coreboot.org https://www.coreboot.org/mailman/listinfo/coreboot