Re: 6.1 Freezes - Suspect SCSI Issue

2007-01-10 Thread Andrea Venturoli

Juergen Heberling wrote:

Hi all

Please suggest some way of diagnosing this problem:

System freezes after being up in production and apparently stable for 
several weeks, no dump, no error message, nothing on the console - so I 
suspect hardware.

 ...

Here is my dmesg, long lines were wrapped:
...
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  6
 cpu3 (AP): APIC ID:  7
...
ahd0: Adaptec AIC7902 Ultra320 SCSI adapter port 
0x2400-0x24ff,0x2000-0x20ff

mem 0xdd20-0xdd201fff irq 32 at device 2.0 on pci3
ahd0: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
ahd1: Adaptec AIC7902 Ultra320 SCSI adapter port 
0x2c00-0x2cff,0x2800-0x28ff

mem 0xdd202000-0xdd203fff irq 33 at device 2.1 on pci3
ahd1: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs


I've had freezes as you describe on two different servers with ahd and 
SMP. The solution was to turn SMP off, unfortunately :(


 bye
av.
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Re: 6.1 Freezes - Suspect SCSI Issue

2007-01-10 Thread Jeff Royle

Andrea Venturoli wrote:

Juergen Heberling wrote:

Hi all

Please suggest some way of diagnosing this problem:

System freezes after being up in production and apparently stable for 
several weeks, no dump, no error message, nothing on the console - so 
I suspect hardware.

  ...

Here is my dmesg, long lines were wrapped:
...
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  6
 cpu3 (AP): APIC ID:  7
...
ahd0: Adaptec AIC7902 Ultra320 SCSI adapter port 
0x2400-0x24ff,0x2000-0x20ff

mem 0xdd20-0xdd201fff irq 32 at device 2.0 on pci3
ahd0: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
ahd1: Adaptec AIC7902 Ultra320 SCSI adapter port 
0x2c00-0x2cff,0x2800-0x28ff

mem 0xdd202000-0xdd203fff irq 33 at device 2.1 on pci3
ahd1: [GIANT-LOCKED]
aic7902: Ultra320 Wide Channel B, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs


I've had freezes as you describe on two different servers with ahd and 
SMP. The solution was to turn SMP off, unfortunately :(


 bye
av.
___


Are these Xeon's?  If so you might want to try disabling Hyper-threading 
in the bios.   I have noticed some strange behavior on 6.2-RC1 with a 
IBM x336 server here.  It never crashed but the throughput felt off, 
so I disabled Hyper-threading and things seemed to perform the way I 
expected it to should.


I would have more details when I actually have time to work on the 
server itself, however in the meantime give it a shot.   If you have 2 
CPU's you shouldn't see the CPU2/CPU3 listed just the 2 aftewards.


FYI - I have used that particular controller successfully on several 
servers recently so I don't think that should be a overall issue for you.


Cheers,

Jeff
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Re: 6.1 Freezes - Suspect SCSI Issue

2007-01-10 Thread Bob

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
0xfcfff000-0xfcff 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 0xf400-0xf7ff 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.  

Bob
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Re: 6.1 Freezes - Suspect SCSI Issue

2007-01-10 Thread Andrea Venturoli

Jeff Royle wrote:

I've had freezes as you describe on two different servers with ahd and 
SMP. The solution was to turn SMP off, unfortunately :(


Are these Xeon's?  If so you might want to try disabling Hyper-threading 


No. In my case one is an Athlon64 and the other an Opteron.



FYI - I have used that particular controller successfully on several 
servers recently so I don't think that should be a overall issue for you.


In my case the controller is slightly different (29320), but I think the 
driver is the problem.
It used to work flawlessly as long as I run 5.x, but started freezing as 
soon as I upgraded to 6.1.

Notice, however, that I don't have data to support my thesis yet.


 bye
av.
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Re: 6.1 Freezes - Suspect SCSI Issue

2007-01-10 Thread Juergen Heberling


Andrea Venturoli wrote:

Jeff Royle wrote:

I've had freezes as you describe on two different servers with ahd 
and SMP. The solution was to turn SMP off, unfortunately :(


I don't think I'm ready to turn SMP off just yet.


Are these Xeon's?  If so you might want to try disabling Hyper-threading


.. but I'll try disabling Hyper-threating.
And yes they are Xeon's, the Nocona version.



No. In my case one is an Athlon64 and the other an Opteron.



FYI - I have used that particular controller successfully on several 
servers recently so I don't think that should be a overall issue for you.
Thank you for your vote of confidence on this. I really think this is a 
drive issue or a drive/drive compatibility issue due to the weird 
results I'm getting on camcontrol tags command.   BTW camcontrol 
defects shows 0 defects.


In my case the controller is slightly different (29320), but I think the 
driver is the problem.
I'm running a 29160 on a 4.9FB (dual Xeon) machine and it has been rock 
solid for 1.5years.
It used to work flawlessly as long as I run 5.x, but started freezing as 
soon as I upgraded to 6.1.

Notice, however, that I don't have data to support my thesis yet.


 bye
av.



Thanks again
Juergen
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