Re: [Xen-users] Poor performance on bandwidth, Xen 4.0.1 kernel pvops 2.6.32.24

[Olivier Hanesse <olivier.hanesse@xxxxxxxxx>]

Hello,

Between 2 lenny dom0 with pvops kernel "2.6.32-26~bpo50+1" from debian backports, bnx2 (version 2.0.2) module seems good.

I got "1.10 GBytes    941 Mbits/sec"

Regards

Olivier

2010/11/23 Rémi BERNIER <R.BERNIER@xxxxxxxxxxx>

Hello all,

I have tested on the new server XEN-B with the default lenny install, kernel 2.6.26-2-amd64, i have the driver bnx2 with version 1.7.5 and the result of iperf is perfect (average 900Mbits/sec on bandwidth)
So I think is the version of driver bnx2 (2.0.2) on the pvops kernel 2.6.32.24 who raises worries.
Someone have the same problem ? How I can bypass this ?
Really thanks in advance for your answer !!

For information, I'm on debian Lenny 5.0.6 with a Dell PowerEdge 2950

Rémi

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_______________________________________________
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