On Fri, Jul 11, 2014 at 01:05:30AM +, Wangkai (Kevin,C) wrote:
> When used a tap as net driver for vm, if too many packets was delivered to
> the
> guest os via tap interface, the guest os will be blocked on io events for a
> long
> time, while tap driver was busying process packets.
Please
>> To: Wangkai (Kevin,C)
> >> Cc: Stefan Hajnoczi; Lee yang; qemu-devel@nongnu.org;
> >> aligu...@amazon.com
> >> Subject: Re: [Qemu-devel] [PATCH] Tap: fix vcpu long time io
> blocking
> >> on
> aligu...@amazon.com
>> Subject: Re: [Qemu-devel] [PATCH] Tap: fix vcpu long time io blocking
>> on tap
>>
>> On Mon, Jul 14, 2014 at 10:44:58AM +, Wangkai (Kevin,C) wrote:
>>> Here the detail network:
>>>
>>> +
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
> Sent: Tuesday, July 15, 2014 11:00 PM
> To: Wangkai (Kevin,C)
> Cc: Stefan Hajnoczi; Lee yang; qemu-devel@nongnu.org;
> aligu...@amazon.com
> Subject: Re: [Qemu-devel] [PATCH] Tap: fix vcpu
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@gmail.com]
> Sent: Tuesday, July 15, 2014 11:00 PM
> To: Wangkai (Kevin,C)
> Cc: Stefan Hajnoczi; Lee yang; qemu-devel@nongnu.org;
> aligu...@amazon.com
> Subject: Re: [Qemu-devel] [PATCH] Tap: fix vcpu
On Mon, Jul 14, 2014 at 10:44:58AM +, Wangkai (Kevin,C) wrote:
> Here the detail network:
>
> ++
> | The host add tap1 and eth10 to bridge 'br1'| ++
> | ++ | | s
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@redhat.com]
> Sent: Monday, July 14, 2014 4:43 PM
> To: Wangkai (Kevin,C)
> Cc: qemu-devel@nongnu.org; aligu...@amazon.com; Lee yang
> Subject: Re: [PATCH] Tap: fix vcpu long time io blocking on tap
>
> On Mon, Jul 14, 2014 at
On Mon, Jul 14, 2014 at 01:55:05AM +, Wangkai (Kevin,C) wrote:
>
>
> > -Original Message-
> > From: Stefan Hajnoczi [mailto:stefa...@redhat.com]
> > Sent: Friday, July 11, 2014 9:04 PM
> > To: Wangkai (Kevin,C)
> > Cc: qemu-devel@nongnu.org; aligu...@amazon.com; Lee yang
> > Subject:
> -Original Message-
> From: Stefan Hajnoczi [mailto:stefa...@redhat.com]
> Sent: Friday, July 11, 2014 9:04 PM
> To: Wangkai (Kevin,C)
> Cc: qemu-devel@nongnu.org; aligu...@amazon.com; Lee yang
> Subject: Re: [PATCH] Tap: fix vcpu long time io blocking on tap
>
> On Fri, Jul 11, 2014 at
On Fri, Jul 11, 2014 at 01:05:30AM +, Wangkai (Kevin,C) wrote:
> When used a tap as net driver for vm, if too many packets was delivered to
> the
> guest os via tap interface, the guest os will be blocked on io events for a
> long
> time, while tap driver was busying process packets.
>
> kv
When used a tap as net driver for vm, if too many packets was delivered to the
guest os via tap interface, the guest os will be blocked on io events for a long
time, while tap driver was busying process packets.
kvm vcpu thread block on io lock call trace:
__lll_lock_wait
_L_lock_1004
__pth
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