Re: HVM dropped packets

[Nathan Stratton <nathan@robotics.net>]

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On Tue, 25 Aug 2009, Pasi Kärkkäinen wrote:

> On Tue, Aug 25, 2009 at 01:30:34PM -0500, Nathan Stratton wrote:
>>
>> I am having no issues with para guests, but HVM guests all show dropped
>> packets.
>
> Try changing the Qemu emulated NIC to Intel e1000. Maybe that helps with the
> performance.

Same

> Or then use PV drivers in the guest.

Can't, its a HVM guest that I don't have control over.

> -- Pasi
>
>> I am runing Xen 3.4.1 on linux 2.6.31-rc6, but also have tried older xen
>> and kernels.
>>
>> Also, not sure why I have a vif and a tap for my HVM guests, only have vif
>> for para.
>>
>> [root@xen1 config]# ifconfig tap19.0
>> tap19.0   Link encap:Ethernet  HWaddr B6:B7:E1:71:09:3C
>>           inet6 addr: fe80::b4b7:e1ff:fe71:93c/64 Scope:Link
>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>           RX packets:34507 errors:0 dropped:0 overruns:0 frame:0
>>           TX packets:43841 errors:0 dropped:0 overruns:645 carrier:0
>>           collisions:0 txqueuelen:500
>>           RX bytes:16847714 (16.0 MiB)  TX bytes:22711872 (21.6 MiB)
>>
>> [root@xen1 config]# ifconfig tap19.1
>> tap19.1   Link encap:Ethernet  HWaddr 76:C7:74:AF:CA:EC
>>           inet6 addr: fe80::74c7:74ff:feaf:caec/64 Scope:Link
>>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>>           RX packets:36601 errors:0 dropped:0 overruns:0 frame:0
>>           TX packets:36018 errors:0 dropped:0 overruns:457 carrier:0
>>           collisions:0 txqueuelen:500
>>           RX bytes:18152679 (17.3 MiB)  TX bytes:17744980 (16.9 MiB)
>>
>> [root@xen1 config]# ifconfig vif19.0
>> vif19.0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>>           inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>>           UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
>>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>>           TX packets:0 errors:0 dropped:2908 overruns:0 carrier:0
>>           collisions:0 txqueuelen:32
>>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>>
>> [root@xen1 config]# ifconfig vif19.1
>> vif19.1   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
>>           inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>>           UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
>>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>>           TX packets:0 errors:0 dropped:181 overruns:0 carrier:0
>>           collisions:0 txqueuelen:32
>>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>>
>>
>> [root@xen1 config]# more proxy0.hou-para
>> import os, re
>> arch = os.uname()[4]
>> if re.search('64', arch):
>>     arch_libdir = 'lib64'
>> else:
>>     arch_libdir = 'lib'
>>
>> kernel = "/usr/lib/xen/boot/hvmloader"
>>
>> builder='hvm'
>>
>> name = "proxy0.hou"
>> memory = 2048
>> vcpus=4
>>
>> disk   = [ 'file:/share/xen/images/proxy0.hou.img,xvda,w', ]
>> vif    = [ 'mac=00:11:25:00:1E:01, type=ioemu, bridge=private',
>>            'mac=00:11:25:00:1E:02, type=ioemu, bridge=public' ]
>>
>> uuid   = '00000014-1111-2222-3333-200809231904'
>>
>> device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
>>
>> sdl=0
>> opengl=1
>> vnc=1
>> vncpasswd=''
>> stdvga=0
>> serial='pty'
>>
>>
>>
>>> <>
>> Nathan Stratton                                CTO, BlinkMind, Inc.
>> nathan at robotics.net                         nathan at blinkmind.com
>> http://www.robotics.net                        http://www.blinkmind.com
>>
>> _______________________________________________
>> Xen-devel mailing list
>> Xen-devel@lists.xensource.com
>> http://lists.xensource.com/xen-devel
>

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