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Hello, I''m using a script with tc, to limit my outgoing traffic : tc qdisc add dev eth0 root handle 1: htb tc class add dev eth0 parent 1: classid 1:1 htb rate 500kbit burst 6k tc filter add dev eth0 parent 1: protocol ip prio 1 u32 match ip dst 172.28.54.9 flowid 1:1 I want to test bandwidth with iperf to see if limitation is correct. Sometimes, I get correct measure for certain rates,

On Sat, Sep 12, 2015 at 6:37 PM, Gene Cumm <gene.cumm at gmail.com> wrote: > On Sat, Sep 12, 2015 at 10:23 AM, Geert Stappers <stappers at stappers.nl> wrote: >> Euh, could this be reviewed: >> >> diff --git a/core/fs/pxe/dhcp_option.c b/core/fs/pxe/dhcp_option.c >> index 8d93a6a..b82e944 100644 >> --- a/core/fs/pxe/dhcp_option.c >> +++

>On Sat, Sep 12, 2015 at 6:37 PM, Gene Cumm <gene.cumm at gmail.com> wrote: >> >... > >> Something like this would be preferable except it's not quite so >> simple. We'd need to not store BOOTP siaddr before parsing. Store a >> pointer to the string during parsing if serverip is unset. After all >> parsing, if the pointer is set, attempt to

Hello everybody, I have a Linux router with an ethernet adapter and a ADSL device. My router has a GRE tunnel connected to a remote IP address. Using "tc" I have configured 3 different classes: 1. 290kbit rate (used for Voip Services) 2. 180kbit rate (used for GRE tunnel) 3. 80kbit rate (for generic data traffic) For each class, using "iperf", I send some data from a PC

I have been looking for environment variables for the %post section of kickstart. Namely if I start my kickstart command with "linux ks=http://serverip/ks.cfg" is there an environment variable that has serverip that I can use in the %post section? Also is there a way to pass a command line argument to the %post section when running kickstart command as the above

I know this will be trivial for most, but I am having trouble with getting my scenario to work correctly. I want to ''tag'' and ''throttle'' the bandwidth to and from a particular client on my lan side. Better yet, I just want to throttle smtp traffic, per say, for that ip. ----lan----------eth1-[linux.box]-eth0----------internet I have used the technique

Dear Friends, I have centos 6.2 64 bit os in my dell server. When I try to install centos or scientific linux using NFS so it is not working and getting me error = "unable to download kickstart file". My kickstart file configuration is : #platform=x86, AMD64, or Intel EM64T #version=DEVEL # Firewall configuration firewall --disabled # Install OS instead of upgrade install # Use NFS

Hi, Can anyone point me out where the script below is wrong? All I want is that host 172.31.1.1 can only use 10 megabit. If I run this script on the in-between router nothing happens (the host uses still the full 100 mbit, tested with iperf) , so i assume that something must be wrong.... #!/bin/sh # LAN1 NIC tc qdisc del dev eth0 root tc qdisc add dev eth0 root handle 1: htb tc class add dev

First,sorry my poor english~ Here is this test: Virtualization performance comparison test Test environment Physical machine: Cpu 8-core 8G memory HDD: 147G xen virtual machine: cpu 2 core 4G memory 30G hard drive wmware virtual machine: cpu 2 core 4G memory 30G hard drive Optical disk array (san) Size: 7.7T Speed: 6G/sec Testing and structural I / 0 performance test Test methods Test

On 12-03-2015 17:39, Digimer wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 12/03/15 04:29 PM, Gilbert Sebenste wrote: >> Hello everyone, >> >> A network engineer buddy of mine brought up for discussion with me >> that he'd like to do some throughput testing, but he's new to >> Linux/RedHat. Is there any software I can recommend to

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

I have two boxes for the purpose of testing traffic control and my knowledge thereof (which is at the inkling stage). The boxes are connected by 100Mbit ethernet cards via a switch. For egress traffic via eth0 I achieve a throughput that is close to the specified CEILing, particularly for values above 1mbit. Ingress traffic does not seem so well behaved. Above about 1mbit rates achieved are

When starting IPERF with "iperf -s" or "iperf -sD" it seems to stop after client runs its first test. I would like to leave it running for a few hours to give someone a chance to run a few tests. Is there a way to leave it active on the server and kill it manually later?

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

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

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 ; +--------+ +-----------+ +--------+ | server |---------- | linux box |---------------------| Client | +--------+ +-----------+ +--------+ MY script: tc-htb3 qdisc del dev eth1 root ipchains -F tc-htb3 qdisc add dev eth1 root handle 10: htb default 20 r2q 40 tc-htb3 class add dev eth1 parent 10: classid 10:1 htb

Hello, I have some problem with poor network performance on libvirt with qemu and openvswitch. I’m using libvirt 1.3.1, qemu 2.5 and openvswitch 2.6.0 on Ubuntu 16.04 currently. My connection diagram looks like below: +---------------------------+ +---------------------------+

Hello, I have a problem about reaching my share folder when the permission is 750 but whenever I change it to 755 I can see the content of the folder. for 750 I get this result: "smbclient //serverip/sharename -U username" smb: \> ls NT_STATUS_NETWORK_ACCESS_DENIED listing \* 0 blocks of size 0. 9 blocks available smb: \> but for 755 everything is fine but of