similar to: Debian Squeeze server running 2 Ubuntu (Lucid) vms blows up under large NFS network load

Hi, I have problem with a Centos 5.3 computer. The networking is very slow. The networking card is a RealTek 1GigE. I plugged an Ubuntu laptop on the same cable and port with an Intel GigE, and it's about 8 to 10 times faster. So the problem is likely to be with the CentOS config. Any suggestion on how to track down the problem with speed. I have checked the packets with wireshark, no

Hi, Last friday I changed the NIC in two of our Samba servers from a 3com 905b (100mb) to a 3com 2000T (1000mb) to take advantage of our new switch which supports gigabit. One of the workstations (XP SP1, with all subsequent patches and hotfixes and with an onboard Realtek 8139) then started to have problems with the two Samba servers with the new NIC's. It could see the network

Hi! I?m having trubbles with the speed on my samba server, I just uppgraded to gigabit (Realtek 8169 NIC) at home when i copy stuff from the samba server i get around 5-6Mb/sec and if i use ftp to access the same file on the same server i get almost 30Mb/sec does anyone have a clue what causes this problem? When i used my old 3com 905c for the local net i got normal 100Mbit speed (around

I have no output in the logs, but /etc/init.d/network restart fixes the issue. I am rsync/scp (10GB) data from one 100MB Full duplex host to an ASUS M3A78-EM (RTL8111B/C). It locks up around the 1.5GB Tx mark. If I ethtool -s eth0 autoneg off speed 100 duplex full it does not happen again. Ideas? -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- -

Dear All, I have an onboard Realtek RTL8111/8168B NIC. from lspci -vv : 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02) It is detected, but why the speed is always 100Mbps, already change cable but still no luck. I use ethtool and from the output it seems that system know that this NIC support gigabit speed : ???????

Hello everyone: Over the past few years I have been a happy samba user, running samba on Redhat / FC platforms. Recently I upgraded hardware, and Samba hasn't been performing well at all.. which makes me sad :-( The new hardware is Asus P5B board with a dual-core intel processor. This board has an onboard Realtek RTL8111/8168B gigabit ethernet controller, which was a hassle to setup.

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Having a workstation with an odd glitch, and I'm hoping someone can help. We have a 35MB shared Excel file with our purchasing history in it. (I know, I've been trying to talk them into a database of some sort, but they'll have none of that...) One workstation in the entire plant is having issues opening it. The file will load, it will

I''m going to set up a PVM on xen-3.3.1 debian-amd64. I need advices about the best methods to install a fresh debian on it (i.e. how to choose the kernel for pvm) . I''ve installed xen from sources and only have one xen kernel in /boot which I''m using for dom0; should I use the same kernel for domUs? There is any problem on use vcpus=2; the other vm is an hvm running

Hey guys, I am planning to buy some components for a Linux router that will handle the Internet access of 200 computers (includes tc shaping) and some inter sub-network routing (at least 100MBps per eth - and there are 3 eth cards). I was thinking of a: Pentium 4 - 3GHz 256 or 512MB RAM Network Cards. Now - I wonder what is more important: the processor speed or the amount of RAM. And can you

I'm looking for some kind of appliance like box, maybe something like this:http://www.soekris.com/net5501.htm on which I could deploy iptables based firewall/openvpn/DNS and other local network services in a wide area network. I would probably install on a flash device. I would prefer something that was relatively easy to install on, or at least has been used with CentOS before, where

I have a CentOS 5.8 box that is dropping packets (just from ping). The network is 8139 RTL-8139/8139C/8139C+ Rev 10 Adding the parameters "pci=noacpi acpi=off " has helped but it still happens. Is there something else that helps the network not drop packets? Thanks, jerry

Hi list, I'm planning to buy a mobo (z170-K) that has Realtek 8111GR (nic). I've tried to search on google about support on C7 but can't fine anything. There is a way to check if supported? Is the Realtek 8111GR supported or I must change mobo? Thanks in advance.

I have an Asus P5Q-WS running FreeBSD 7 and the onboard Realtek NIC's are not being detected. No Kernel modifications as this is a fresh install. pciconf -lv : re0@pci0:3:0:0: class=0x020000 card=0x82c61043 chip=0x816810ec rev=0x02 hdr=0x00 vendor = 'Realtek Semiconductor' device = 'RTL8168/8111 PCI-E Gigabit Ethernet NIC' class = network

We have a 10Gbps connection to our server so I need to be able to create VMs using the faster e1000 nics instead of the default Realtek 100Mbps ones but I''m not sure how to go about it. Is there a walkthrough or "howto" or can someone point me at some simple instructions? I''m using xen-3.0.3-105.el5_5.5 and Centos 5.5 kernel 2.6.18-194.32.1.el5.centos.plusxen VMs are

????????????. ????? ??? ????????? ???????? ?? ????. ?? ??????? ?????????? ? ????????? ?? ????? ??????????? ?????? ????? ??? ???????? Gigabyte GA-P35-S3, ??????? ????? ?????????? ??????? ???????? Realtek RTL8111B/8111C. ??? ???????? ?? ????? ?????????? ?????????? ??????????? ????, ?? ????? ?????? ?????? ?????? ?????????? ?????? ?????????. ?

Has anyone posted an up to date hardware review lately? It seems clear that a RAID6 server with 300GB CHEETAH 15K.5 SAS drives will trump a P3 with a 30GB IDE drive, however, not everyone will spend the money required for the high end unit, I'm looking to build a new server & trying to make best use of funds (aren't we all). TIA

Hello, Just did a fresh install of xen-4.0 and using the 2.6.31.13 dom0 kernel. I have 6 linux debian guests running, and on my host console i am getting these errors rolling pretty constantly. "Attempting to checksum a non-TCP/UDP packet, dropping a protocol 1 packet" I tried doing the ethtool -K eth0 tx off and same thing on peth0, using bridged mode for network config. Any tips?

Hello, Just did a fresh install of xen-4.0 and using the 2.6.31.13 dom0 kernel. I have 6 linux debian guests running, and on my host console i am getting these errors rolling pretty constantly. "Attempting to checksum a non-TCP/UDP packet, dropping a protocol 1 packet" I tried doing the ethtool -K eth0 tx off and same thing on peth0, using bridged mode for network config. Any tips?

Greetings- I'm attempting to get CentOS 5.5 x86 (yes, very specific version required for specific software usage scenario... don't ask) running on an Intel D425KT mini-ITX motherboard. Everything works fine, with the exception of the onboard ethernet, which is a Realtek RTL8105E chip. The stock CentOS installation attempts to use the r8169 driver, which does not work. I've been around

I have a hardware here with 9 NICs (8 of them on-board) and I want to set up 8 NICs as real network interfaces, one for each xen domain. The 9th NIC should be Domain-0 which is working well. Currently I have only set up one domain which is running in bridged mode at the moment. I am currently trying to set up a second domain which uses eth2 but I didn''t succeed. I want to get the