> I had the same problem on a previous server.  I ultimately replaced the CPU 
> and I think that solved the problem.
> Jon
I hope I do not have to do this as this is a brand new server! 
I did see a bug related 
http://lists.xensource.com/archives/html/xen-bugs/2007-02/msg00074.html
Says to go to a different kernel version - might give that a shot - however if 
anyone else has had this problem and has a fix let me know.
I will also check out the CPU and see if it is a hardware related problem.
Thanks,
Travis
Formoso, Travis wrote: 
Here is what I am seeing in the log files. When the kernel hung and the 
following error message was displayed on the domain's console every 5 seconds.
=======================
BUG: soft lockup detected on CPU#0!
 [<c1044e8b>] softlockup_tick+0xaa/0xc1
 [<c10087af>] timer_interrupt+0x552/0x59f
 [<c1029612>] lock_timer_base+0x15/0x2f
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c102971e>] __mod_timer+0x94/0x9e
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c1045101>] handle_IRQ_event+0x1e/0x47
 [<c1046464>] handle_level_irq+0x93/0xdf
 [<c10463d1>] handle_level_irq+0x0/0xdf
 [<c10068d4>] do_IRQ+0xb5/0xdd
 [<c1215c95>] do_general_protection+0x11c/0x16f
 [<c114a90d>] evtchn_do_upcall+0x5f/0x97
 [<c1005006>] hypervisor_callback+0x46/0x50
 =======================
BUG: soft lockup detected on CPU#0!
 [<c1044e8b>] softlockup_tick+0xaa/0xc1
 [<c10087af>] timer_interrupt+0x552/0x59f
 [<c1029612>] lock_timer_base+0x15/0x2f
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c102971e>] __mod_timer+0x94/0x9e
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c121564f>] _spin_unlock_irqrestore+0x8/0x16
 [<c1045101>] handle_IRQ_event+0x1e/0x47
 [<c1046464>] handle_level_irq+0x93/0xdf
 [<c10463d1>] handle_level_irq+0x0/0xdf
 [<c10068d4>] do_IRQ+0xb5/0xdd
 [<c114a90d>] evtchn_do_upcall+0x5f/0x97
 [<c100626f>] do_iret_error+0x0/0xb1
 [<c1005006>] hypervisor_callback+0x46/0x50
 [<c100626f>] do_iret_error+0x0/0xb1
 [<c100628d>] do_iret_error+0x1e/0xb1
 [<c1004ea5>] restore_nocheck_notrace+0xe/0xf
 [<c1006778>] do_softirq+0x1f/0xc6
 [<c1006778>] do_softirq+0x1f/0xc6
 [<c1006778>] do_softirq+0x1f/0xc6
 [<c1004ea5>] restore_nocheck_notrace+0xe/0xf
 [<c103080b>] search_exception_tables+0x14/0x25
 [<c1017f9f>] fixup_exception+0xb/0x20
 [<c1215c95>] do_general_protection+0x11c/0x16f
 [<c114a90d>] evtchn_do_upcall+0x5f/0x97
 [<c1005006>] hypervisor_callback+0x46/0x50
 [<c1215b79>] do_general_protection+0x0/0x16f
 [<c100626f>] do_iret_error+0x0/0xb1
 [<c121577d>] error_code+0x35/0x3c
 =======================
-----Original Message-----
From: Formoso, Travis 
Sent: Monday, April 16, 2007 10:55 AM
To: xen-users
Subject: [Xen-users] Xen servers not responsive
Hello,
Currently am using 2.6.19-1.2911年6月5日.fc6xen version of the kernel because the 
newest version was giving us problems. However with this one we are running 
these domains:
Name ID Mem(MiB) VCPUs State Time(s)
Domain-0 0 2307 2 r----- 4520.9
mars 10 1511 1 -b---- 174.0
monitoring 14 229 1 -b---- 12.1
The problem we are experiencing is after about an hour the servers do not 
respond. We have to do an xm destroy and then create to get them to work again. 
Is this a known issue and what could be possible fixes for the problem?
Thank you,
Travis
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