On Tue, Feb 20, 2007 at 06:49:17PM -0500, Jeff Garzik wrote: > Can you narrow down the -gitX release further? i.e. does 2.6.20-git13 > perform at full speed? -git13 includes several libata changes, but does > not include the ACPI additions. > > Since this is an ACPI execution error in the bug, that would tend to > point to bad BIOS tables. But since there is a performance drop that > does not disappear with acpi=off, there might also be another factor, > unrelated to ACPI, at play here. I've noticed on lkm another bug report which has pointed me to this: ata_piix 0000:00:1f.1: version 2.00ac7 ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 18 PCI: Setting latency timer of device 0000:00:1f.1 to 64 ata1: PATA max UDMA/100 cmd 0x000101f0 ctl 0x000103f6 bmdma 0x0001ffa0 irq 14 ata2: PATA max UDMA/100 cmd 0x00010170 ctl 0x00010376 bmdma 0x0001ffa8 irq 15 scsi0 : ata_piix ata1.00: ATA-6: ST9100824A, 3.04, max UDMA/100 ata1.00: 195371568 sectors, multi 16: LBA48 ata1.01: ATAPI, max UDMA/33 ata1.00: configured for UDMA/33 ata1.01: configured for UDMA/33 Both ports are for some reason configured as UDMA/33. -- Lukáš Hejtmánek - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
