On Tue, 30 Dec 2008, Grant Grundler wrote:
On Tue, Dec 30, 2008 at 4:24 AM, Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx> wrote:
When I boot from an Intel X25-E SSD, it takes roughly a few seconds;
however, items such as:
$ dmesg|grep link\ down
[ 2.447030] ata4: SATA link down (SStatus 0 SControl 300)
[ 4.481288] ata5: SATA link down (SStatus 0 SControl 0)
[ 6.501288] ata6: SATA link down (SStatus 0 SControl 0)
[ 8.522038] ata7: SATA link down (SStatus 0 SControl 0)
[ 10.552288] ata8: SATA link down (SStatus 0 SControl 0)
Scanning for devices on channels that have nothing connected adds to the
boot time, is there anyway to turn off/disable scanning for certain ports to
help speed the boot process?
Some BIOSs allow one to enable/disable each port individually.
Have you checked the BIOS config menus for such an option?
drivers/ata/libata-core.c declares "ata_force_param_buf" but I don't
see any documentation for it despite the reference to
Documentation/kernel-parameters.txt .
hth,
grant
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Disabling the additional controllers helped a bit but for AHCI on a few
boards its all or nothing, AHCI enabled/disabled.
Justin.
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