6.1 Freezes - Suspect SCSI Issue

Bob bob at tamara-b.org
Wed Jan 10 21:53:08 UTC 2007

I also have had the EXACT same problem. I have suspected the SCSI
system as well. I have played with all the hardware settings IE
transfer rate etc.... to no avail. I am not willing to disable the SMP,
as this is my workstation, and I need the extra speed.

FreeBSD 6.1-RELEASE-p10 #2

cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
pcib0: <ACPI Host-PCI bridge> on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 2.0 on pci0
pci1: <ACPI PCI bus> on pcib1
ahc0: <Adaptec aic7880 Ultra SCSI adapter> port 0xfc00-0xfcff mem
0xfcfff000-0xfcffffff irq 30 at device 6.0 on pci1 ahc0: [GIANT-LOCKED]
aic7880: Ultra Single Channel A, SCSI Id=7, 16/253 SCBs
aac0: <Dell PERC 2/Si> mem 0xf4000000-0xf7ffffff irq 31 at device 2.1
on pci0 aac0: [FAST]
aac0: Adaptec Raid Controller 2.0.0-1


Why/what is the [GIANT-LOCKED]? I read somewhere that "GIANT" was
removed in 6.1.  


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