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[Xen-devel] [Fwd: Poweredge 2600] and Timer ISR/0: Time went backwards e

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] [Fwd: Poweredge 2600] and Timer ISR/0: Time went backwards errors with FC4/xen-unstable
From: Rob See <rob@xxxxxxxx>
Date: Mon, 08 Aug 2005 11:34:37 -0400
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I don't mean to be pushy, but does anyone have any suggestions/comments on this one. I'm using the same version of the kernel on a Poweredge 1850 without the same timer errors or oopses.

Thanks,
-Rob

-------- Original Message --------
Subject: Poweredge 2600
Date: Thu, 04 Aug 2005 13:49:45 -0400
From: Rob See <rob@xxxxxxxx>
To: xen-users@xxxxxxxxxxxxxxxxxxx,  Xen-devel@xxxxxxxxxxxxxxxxxxx

All,

        I'm running into the following oops with a Poweredge 2600 (also an
E7500 based machine) Does anyone have any suggestions ? The machine
seems to work OK with a standard i386 kernel, and has had a problem
similar to this with Xen 2.0.5-2.0.6 and build 1370 of the FC4 kernel
which I believe is based on xen-unstable from early May. Is this a
problem that the noirqbalance might fix ? Its got 1gig of RAM which I
have swapped out. I also recently added an additional 1gig and I'm still
seeing these problems. The uptime was around 5 days. I believe that my
Amanda nightly tape backup was running at this time (dumps to a LTO tape
drive plugged into an Adaptec AHA-3960D / AIC-7899A U160/m (rev 01)).
Also on a side note I'm seeing the following messages on the same machine:
Timer ISR/0: Time went backwards: delta=-29990000 cpu_delta=20010000
shadow=152010000000 off=11000 processed=152040000000
cpu_processed=151990000000
 0: 151990000000
 1: 151990000000
 2: 152040000000
 3: 151990000000

Thanks for any help.
-Rob



Aug  4 04:02:02 hamilton kernel: Modules linked in: nfs lockd bridge md5
ipv6 parport_pc lp parport autofs4 i2c_dev i2c_core sunrpc uhci_hcd
e1000 sg st dm_snapshot dm_zero dm_mirror ext3 jbd dm_mod megaraid_mbox
megaraid_mm aic7xxx scsi_transport_spi sd_mod scsi_mod
Aug  4 04:02:02 hamilton kernel: CPU:    1
Aug  4 04:02:02 hamilton kernel: EIP:    0061:[<c017e384>]    Not
tainted VLI
Aug  4 04:02:02 hamilton kernel: EFLAGS: 00010283
(2.6.11-1.1370_FC4.rootxen0)
Aug  4 04:02:02 hamilton kernel: EIP is at iput+0x14/0x70
Aug  4 04:02:02 hamilton kernel: eax: 00000000   ebx: cd3341cc   ecx:
cd334100   edx: c03b6f00
Aug  4 04:02:02 hamilton kernel: esi: c4d9cad8   edi: c4d9cae0   ebp:
00000080   esp: c8ad1d7c
Aug  4 04:02:02 hamilton kernel: ds: 0069   es: 0069   ss: 0069
Aug  4 04:02:02 hamilton kernel: Process find (pid: 5685,
threadinfo=c8ad0000 task=cf0f3020)
Aug  4 04:02:02 hamilton kernel: Stack: cd3341cc c017b55f 00000000
0000008a 00000000 c07d5a00 c017b9c4 c014f0ec
Aug  4 04:02:02 hamilton kernel:        0012d900 00000000 0000c7fb
00000018 00000000 000080d2 00000020 0000000a
Aug  4 04:02:02 hamilton kernel:        c8ad1de0 c8ad1e48 c0354c20
c01501a7 0000c7fa 00000000 00000000 00000000
Aug  4 04:02:02 hamilton kernel: Call Trace:
Aug  4 04:02:02 hamilton kernel:  [<c017b55f>] prune_dcache+0x10f/0x1a0
Aug  4 04:02:02 hamilton kernel:  [<c017b9c4>]
shrink_dcache_memory+0x14/0x40
Aug  4 04:02:02 hamilton kernel:  [<c014f0ec>] shrink_slab+0xfc/0x160
Aug  4 04:02:02 hamilton kernel:  [<c01501a7>] try_to_free_pages+0xe7/0x1d0
Aug  4 04:02:02 hamilton kernel:  [<c01507ac>] wakeup_kswapd+0x6c/0xa7
Aug  4 04:02:02 hamilton kernel:  [<c0148e4d>] __alloc_pages+0xdd/0x430
Aug  4 04:02:02 hamilton kernel:  [<c0153f0a>] do_anonymous_page+0xca/0x200
Aug  4 04:02:02 hamilton kernel:  [<c01e2248>] copy_to_user+0x58/0x80
Aug  4 04:02:02 hamilton kernel:  [<c01540a8>] do_no_page+0x68/0x340
Aug  4 04:02:02 hamilton kernel:  [<c015460c>] handle_mm_fault+0x18c/0x1f0
Aug  4 04:02:02 hamilton kernel:  [<c0115417>] do_page_fault+0x1d7/0x65d
Aug  4 04:02:02 hamilton kernel:  [<c015659f>] do_mmap_pgoff+0x55f/0x7d0
Aug  4 04:02:02 hamilton kernel:  [<c0112dc4>] sys_mmap2+0x94/0xd0
Aug  4 04:02:02 hamilton kernel:  [<c010978a>] page_fault+0x4e/0x54
Aug  4 04:02:02 hamilton kernel: Code: fd ff ff 8d 74 26 00 e9 cb fe ff
ff 8d 74 26 00 8d bc 27 00 00 00 00 53 85 c0 89 c3 74 4c 83 bb 44 01 00
00 20 8b 80 ac 00 00 00 <8b> 40 24 74 49 85 c0 74 07 8b 50 14 85 d2 75
31 8d 43 24 ba 74


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