similar to: [Bridge] Bridge Performance

Hi there, I was asking this question already a few days go, but I'm not sure whether anyone noticed due to the mailserver outtage. So I'm just re-posting it, sorry, but it's an important issue for me, I would be glad to hear some insight on this. The question is regarding throughput performance using linux 2.4.5.1. My setup is very simple : I have two laptops with a wireless card.

Hello everyone, I''m a newbie experimenting with CBQ shaping and am facing a few problems. Can any of you please help? TEST SETUP: +---------------+ +----------------+ | 10.0.0.103 |----------->| 10.0.0.102 | +---------------+ +----------------+ 10.0.0.103: Linux, 100Mbit/s NIC 10.0.0.102: Windows, 100Mbit/s NIC, iperf tcp server (ports 2000 and 2001) WHAT I

Hi all, We are using Tinc 2.0.22 as a layer 2 VPN between nodes over the Internet. We are experiencing very slow network speed using Tinc. Between 2 nodes, we have 150 Mbit/s network speed without Tinc (public IPv4 to public IPv4 using iperf), and only 3 Mbit/s using Tinc (private IPv4 to private IPv4). Here is the configuration of Tinc we use : AddressFamily = ipv4 BindToInterface = vmbr1

Hi List. First post, be gentle please. Is there any limit in the linux UDP rate? I am using linux kernel 2.6 and iperf to measure bandwidth between two endpoints connected by 100 Mbits ethernet. Running (as root) iperf -u -s and iperf -u -c always gives me 1.05 Mbits/seg even when runned in the same machine. Can somebody clarify this? Thanks in advance. Sebastian

Hello, I have problem with lost packets in tinc connection. I have tinc VPN with about 60 nodes (central node with tinc 1.0.20 and 59 nodes with tinc 1.0.9 connecting with central). Everything works fine except 2 nodes. In this nodes I observed about 90 % packet loss in connection to central. In the logs (debug level 5) I don't see any errors. I tested connection with iperf (server in

I have a Dell server with four bonded, gigabit interfaces. Bonding mode is 802.3ad, xmit_hash_policy=layer3+4. When testing this setup with iperf, I never get more than a total of about 3Gbps throughput. Is there anything to tweak to get better throughput? Or am I running into other limits (e.g. was reading about tcp retransmit limits for mode 0). The iperf test was run with iperf -s on the

I set up a domU as a backup server, but it has very, very poor network performance with external computers. I ran some tests with iperf and found some very weird results. Using iperf, I get these approximate numbers (the left column is the iperf client and the right column is the iperf server): domU --> domU 1.77 Gbits/sec (using 127.0.0.1) domU --> domU 1.85 Gbits/sec (using domU

I set up a domU as a backup server, but it has very, very poor network performance with external computers. I ran some tests with iperf and found some very weird results. Using iperf, I get these approximate numbers (the left column is the iperf client and the right column is the iperf server): domU --> domU 1.77 Gbits/sec (using 127.0.0.1) domU --> domU 1.85 Gbits/sec (using domU

Hi list, I have a problem I thought was simple first, but now I''m stuck. In a nutshell, it''s about redundant uplinks at an outside location. Crude ASCII-Art follows: Internet | | +------------+ | cisco with | | uplinks | +------------+ | | ATM interface +----------+ ... | alvarion | | | wireless

Hi, We are running on 5.5 on a HP ProLiant DL360 G6. Kernel version is 2.6.18-194.17.1.el5 (we had also tested with the latest available kernel kernel-2.6.18-238.1.1.el5.x86_64) We running some performance tests using the "iperf" utility. We are seeing very bad and inconsistent performance on the UDP testing. The maximum we could get, was 440 Mbits/sec, and it varies from 250 to 440

Hi, In a setup where OpenVSwitch is used with GRE tunels on top of an interface provided by tinc, I'm experiencing significant performance degradation problems (from 100Mb/s down to 1Mb/s in the worst case) and I'm not sure how to fix this. The manifestation of the problem is, from the user point of view, iperf reports ~100Mb/s and rsync reports ~1Mb/s: $ iperf -c 91.224.149.132

Just reporting some iperf results. In each case, Dom0 is iperf server, DomU is iperf client: (1) Dom0: Intel Core2 3.16 GHz, CentOS 5.2, xen 3.0.3. DomU: Windows XP SP3, GPLPV 0.9.12-pre13, file based. Iperf: 1.17 Gbits/sec (2) Dom0: Intel Core2 2.33 GHz, CentOS 5.2, xen 3.0.3. DomU: Windows XP SP3, GPLPV 0.9.12-pre13, file based. Iperf: 725 Mbits/sec (3) Dom0: Intel Core2 2.33 GHz,

Hi, I am seeing a performance degradation while using libvirt to start my vm (kvm). vm is fedora 12 and host is also fedora 12, both with 2.6.32.10-90.fc12.i686. Here are the statistics from iperf : >From VM: [ 3] 0.0-30.0 sec 199 MBytes 55.7 Mbits/sec >From host : [ 3] 0.0-30.0 sec 331 MBytes 92.6 Mbits/sec libvirt command as seen from ps output : /usr/bin/qemu-kvm -S -M

Hi guys, I''m running a freenas domU (FreeBSD 8.3 based, ZFS v28, 2 vcpus mapped to the same HT capable core) to serve storage for all purpose including other domUs running on the same host. I did some study to understand how well it works and the result is kind of confusing. In summary, the network performance between domains on the same host is worse than expected. And NFS service to

I had a linux wireless router. I would like to monitor the queue lengh of the wireless interface. By default, the wifi0 interface is with pfifo_fast qdisc which does not report backlog packet. I replaced pfifo_fast with pfifo: ''tc qdisc replace dev wifi0 root pfifo'' Then I use iperf to send UDP pkts faster than the interface can handle but when I read the qdisc, the result is

Hello, My first post on Xen-Users, so .. i''ve discovered a strange problem. Setup: -A Windows server 2003R2 (x86) with GPL PV driver 0.9.9 ipferf 1.7.0 (from 2003) -dom0 a opensuse 11.0 xen: # rpm -q -a |grep -i xen kqemu-kmp-xen-1.3.0pre11_2.6.25.5_1.1-7.1 kiwi-desc-xenboot-2.38-67.1 xen-3.2.1_16881_04-4.2 xen-tools-3.2.1_16881_04-4.2 xen-libs-3.2.1_16881_04-4.2

Hi, I have just started to work with Xen and have a question regarding the expected network throughput. Here is my configuration: Processor: 2.8 GHz Intel Celeron (Socket 775) Motherboard: Gigabyte 8I865GVMF-775 Memory: 1.5 GB Basic system: Kubuntu 6.06 Dapper Drake Xen version: 3.02 (Latest 3.0 stable download) I get the following iperf results: Src Dest Throughput Dom0 Dom0

Hi. I have 2 PC's connected with 1GBit NIC's. When I transfer a file from my File-Server(Redhat9.0, 256 SD-RAM, 300MHz PII, RTL8169 NIC, 2x Western Digital WD200JB RAID 0) to my Windows-PC(AMD Athlon XP 1800+, 1024 MB DDR-RAM, WINXP PRO, RTL8169 NIC, 2x Western Digital WD080JB RAID 0) with Samba, i get Speeds around 8-9MB/sec. I think this is too low for an GBit Network, so i tested the

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

Hi all, I'm back again with my speed issues. The past issues where dependant of network I used. Now I run my tests in a lab, with 2 configurations linked by a Gigabit switch : node1: Intel Core i5-2400 with Debian 7.2 node2: Intel Core i5-3570 with Debian 7.2 Both have AES and PCLMULQDQ announced in /proc/cpuinfo. I use Tinc 1.1 from Git. When I run an iperf test from node2 (client) to