4.11-STABLE/PAE

[Ken Menzel]

from "man aac"   BUGS section (near the bottom):
This driver will not work on systems with more than 4GB of memory.

My comment:
If you want more than 4G with aac controller try FreeBSD 5.3 or 5.4

Ken

----- Original Message ----- 
From: "Jeremy Bogan" <jeremy at segpub.com.au>
To: <freebsd-stable at freebsd.org>
Sent: Tuesday, April 05, 2005 9:41 AM
Subject: 4.11-STABLE/PAE


> Hiya,
>
> We've recently loaded FreeBSD 4.11-STABLE with PAE support onto one 
> of  our brand new Dell PowerEdge 2650's. The box has 6GB RAM and 
> with PAE  support compiled into our kernel can see it all fine. 
> However when we  start doing disk intensive stuff like compiling, 
> our RAID appears to  spack out and cause the system to freeze and 
> require a reboot. When  logging in via console we see:
>
> aac0: COMMAND TIMEOUT AFTER 1540 SECONDS
>
> repeated continuously.
>
> Apr  5 22:10:24 luke1 /kernel: CPU: Intel(R) Xeon(TM) CPU 3.06GHz 
> (3050.63-MHz 686-class CPU)
> Apr  5 22:10:24 luke1 /kernel: Origin = "GenuineIntel"  Id = 0xf29 
> Stepping = 9
> Apr  5 22:10:24 luke1 /kernel: 
> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE 
> ,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> Apr  5 22:10:24 luke1 /kernel: Hyperthreading: 2 logical CPUs
> Apr  5 22:10:24 luke1 /kernel: real memory  = 6442450944 (6291456K 
> bytes)
> Apr  5 22:10:24 luke1 /kernel: avail memory = 6000644096 (5860004K 
> bytes)
>
> When disabling PAE support everything appears to be perfectly fine, 
> but  we're only able to address 4GB out of our 6GB. Just wondering 
> if anyone  else has experienced this or has any insight.
>
> The system is running RAID5 with 4 x 73GB SCSI drives:
>
> Apr  5 22:30:03 luke1 /kernel: aac0: <Dell PERC 3/Di> mem 
> 0xf0000000-0xf7ffffff irq 16 at device 8.1 on pci4
> Apr  5 22:30:03 luke1 /kernel: aac0: i960RX 100MHz, 118MB cache 
> memory,  optional battery present
> Apr  5 22:30:03 luke1 /kernel: aac0: Kernel 2.8-0, Build 6092, S/N 
> 64a1d3
> Apr  5 22:30:03 luke1 /kernel: aac0: Supported 
> Options=275c<WCACHE,DATA64,HOSTTIME,WINDOW4GB,SOFTERR,NORECOND,SGMAP64>
>
> Thanks :)
>
> -- 
> jeremy bogan    [ jeremy at segpub.com.au ]
> segment publishing - design.develop.host
>
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