Changes between Version 1 and Version 2 of boot_speed


Ignore:
Timestamp:
12/01/2017 03:45:54 PM (2 years ago)
Author:
Tim Harvey
Comment:

rename MultiMediaCard? page to MMC

Legend:

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  • boot_speed

    v1 v2  
    7676 6. booting from USB adds several seconds while the bootloader waits for the UMS device to be ready. Some USB memory sticks don't conform to the USB spec as well and require an even longer time than the 1s maximum (requiring the setting of usb_pgood_delay in the bootloader to 2000ms or more)
    7777 7. Obviously not all USB Mass Storage devices are created equal - this is a very low cost and its suspected it doesn't not consistently perform and well as it did during raw read/write tests
    78  8. UHS-I data rates up to 104MB/sec are supported on certain Ventana boards (see [wiki:MultiMediaCard mmc] for more info)
     78 8. UHS-I data rates up to 104MB/sec are supported on certain Ventana boards (see [wiki:MMC mmc] for more info)
    7979
    8080'''The above values are all with a completely 'un-tuned' bootloader and OS (see below) for ways to easily shave off 5 to 10 seconds off the above values'''