RE: [Xen-users] pv_ops 2.6.31.6

["Ian Tobin" <itobin@xxxxxxxxxxxxx>]

Ive got a major performance issue.  If i boot up the dom0 without starting xen 
and copy a large file to it via ftp its fine.

As soon as i run xend start the Dom0 gets slower and slower until the server is 
at a crawl so its unusable.

Anyone else getting slow response?




-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Olivier B.
Sent: 22 January 2010 08:34
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] pv_ops 2.6.31.6

For me restore/live migration doesn't work.

For dom0 I use the version 2.6.31.6 00751-g600545, with vanilla 
2.6.31.12 pv_ops version on domU, and debian xen 3.4.2-2

On restore I obtain that :

[49532.764004] <4>------------[ cut here ]------------
[49532.764004] BUG: recent printk recursion!
[49532.764004] <4>WARNING: at arch/x86/xen/time.c:180 
xen_sched_clock+0x7c/0xaf()
[49532.764004] BUG: recent printk recursion!
[49532.764004] <d>Modules linked in:
[49532.764004] BUG: recent printk recursion!
[49532.764004]  nf_conntrack_ipv4
[49532.764004] BUG: recent printk recursion!
[49532.764004]  nf_defrag_ipv4
[49532.764004] BUG: recent printk recursion!
[49532.764004]  xt_state
[49532.764004] BUG: recent printk recursion!
[49532.764004]  nf_conntrack
[49532.764004] BUG: recent printk recursion!
[49532.764004]  dm_snapshot
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [last unloaded: scsi_wait_scan]
[49532.764004] BUG: recent printk recursion!
[49532.764004]
[49532.764004] BUG: recent printk recursion!
[49532.764004] Pid: 30422, comm: kstop/0 Tainted: G        W  
2.6.31.12-dae-xen #1
[49532.764004] BUG: recent printk recursion!
[49532.764004] Call Trace:
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8104e0d1>] warn_slowpath_common+0x88/0xb6
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8104e121>] warn_slowpath_null+0x22/0x38
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8100dc4f>] xen_sched_clock+0x7c/0xaf
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8101829d>] sched_clock+0x9/0xd
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8106b73b>] sched_clock_cpu+0xa7/0x168
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81047d4b>] update_rq_clock+0x26/0x48
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81048c11>] try_to_wake_up+0xac/0x2af
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8101135d>] ? retint_restore_args+0x5/0x6
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81048e34>] default_wake_function+0x20/0x36
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8103bcdd>] __wake_up_common+0x58/0xa2
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8106120e>] ? wq_barrier_func+0x0/0x36
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8103e07d>] complete+0x49/0x73
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8106122e>] wq_barrier_func+0x20/0x36
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81060d8d>] worker_thread+0x156/0x20d
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8100dd1f>] ? xen_restore_fl_direct_end+0x0/0x1
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81065b7f>] ? autoremove_wake_function+0x0/0x5a
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81060c37>] ? worker_thread+0x0/0x20d
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81065759>] kthread+0x9b/0xa3
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff810119ea>] child_rip+0xa/0x20
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff81010bac>] ? int_ret_from_sys_call+0x7/0x1b
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff8101135d>] ? retint_restore_args+0x5/0x6
[49532.764004] BUG: recent printk recursion!
[49532.764004] BUG: recent printk recursion!
[49532.764004]  [<ffffffff810119e0>] ? child_rip+0x0/0x20
[49532.764004] BUG: recent printk recursion!
[49532.764004] <4>---[ end trace bbe4ba0e56e4a4ae ]---
[49532.764004] BUG: recent printk recursion!
[49532.764004] <4>------------[ cut here ]------------


But except that, it works fine.

Olivier

Pasi Kärkkäinen a écrit :
> On Thu, Jan 21, 2010 at 09:01:21PM -0000, Ian Tobin wrote:
>   
>>    Hi,
>>
>>
>>
>>    Quick question, is the 2.6.31.6 kernel in Jermeys tree stable enough for a
>>    live environment?  Ive been playing with it and seems to work quite well.
>>
>>     
>
> It works for many people.. so please keep using it, and report any 
> issues/bugs found. 
>
> Also make sure you monitor the changelogs, it's still under development so 
> you want to
> upgrade every now and then to get the latest bits.
>
> xen/master branch changelog:
> http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=shortlog;h=xen/master
>
> Whole git tree changelog:
> http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git
>
> -- Pasi
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>   

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