WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-users

[Xen-users] Poor performance on bandwidth, Xen 4.0.1 kernel pvops 2.6.32

To: Xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Poor performance on bandwidth, Xen 4.0.1 kernel pvops 2.6.32.24
From: Rémi BERNIER <R.BERNIER@xxxxxxxxxxx>
Date: Mon, 15 Nov 2010 10:14:05 +0100
Cc:
Delivery-date: Mon, 15 Nov 2010 01:15:37 -0800
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx

Hello list,

I have two differents installation Xen Hypervisor on two identical physical server, on the same switch :
The problem is on my new server (Xen 4.0.1 with pvops kernel 2.6.32.24), I have bad performance on bandwidth
I have test with a files copy and "iperf".
Result iperf average:
                                                        Transfert                Bandwidth
XEN-A -> Windows Physical:        1005 MBytes   843 Mbits/sec
XEN-B -> Windows Physical:        522 MBytes    438 Mbits/sec
Windows Physical -> XEN-A:        477 MBytes   399 Mbits/sec
Windows Physical -> XEN-B:        175 MBytes   146 Mbits/sec

It's the same network card but on the new installation, the module bnx2 have a new version...
Maybe i haven't activate or forget something...
If you have an idea, I listen you !! Thanks in advance !
This is the details of two installations:

XEN-A:
- XEN 3.2.1 kernel 2.6.26-2-xen-amd64
#xm info
release                : 2.6.26-2-xen-amd64
version                : #1 SMP Sun Jun 21 08:09:04 UTC 2009
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 1995
hw_caps                : bfebfbff:20100800:00000000:00000140:0004e33d:00000000:00000001
total_memory           : 24570
free_memory            : 918
node_to_cpu            : node0:0-3
xen_major              : 3
xen_minor              : 2
xen_extra              : -1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
cc_compiler            : gcc version 4.3.1 (Debian 4.3.1-2)
cc_compile_by          : waldi
cc_compile_domain      : debian.org
cc_compile_date        : Sat Jun 28 09:32:18 UTC 2008
xend_config_format     : 4

#lspci -v
09:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
        Subsystem: Dell Device 01b2
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16
        Memory at f4000000 (64-bit, non-prefetchable) [size=32M]
        Capabilities: [40] PCI-X non-bridge device
        Capabilities: [48] Power Management version 2
        Capabilities: [50] Vital Product Data <?>
        Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
        Kernel driver in use: bnx2
        Kernel modules: bnx2

#ethtool -i peth0
driver: bnx2
version: 1.7.5
firmware-version: 2.9.1
bus-info: 0000:05:00.0


XEN-B:
- XEN 4.0.1 kernel pvops 2.6.32.24
#xm info
release                : 2.6.32.24
version                : #1 SMP Thu Oct 14 10:56:13 CEST 2010
machine                : x86_64
nr_cpus                : 4
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 1995
hw_caps                : bfebfbff:20100800:00000000:00000940:0004e33d:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 24570
free_memory            : 10
node_to_cpu            : node0:0-3
node_to_memory         : node0:10
node_to_dma32_mem      : node0:9
max_node_id            : 0
xen_major              : 4
xen_minor              : 0
xen_extra              : .1
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : unavailable
xen_commandline        : loglvl=all guest_loglvl=all sync_console console_to_ring com1=19200,8n1 console=com1
cc_compiler            : gcc version 4.3.2 (Debian 4.3.2-1.1)
cc_compile_by          : root
cc_compile_domain      : test.com
cc_compile_date        : Thu Oct 14 03:37:34 EDT 2010
xend_config_format     : 4

#ethtool -i peth0
driver: bnx2
version: 2.0.2
firmware-version: 2.9.1
bus-info: 0000:05:00.0

#lspci -v
09:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
        Subsystem: Dell Device 01b2
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 1245
        Memory at f4000000 (64-bit, non-prefetchable) [size=32M]
        Capabilities: [40] PCI-X non-bridge device
        Capabilities: [48] Power Management version 2
        Capabilities: [50] Vital Product Data <?>
        Capabilities: [58] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
        Kernel driver in use: bnx2
        Kernel modules: bnx2
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users
<Prev in Thread] Current Thread [Next in Thread>