similar to: CentOS 4.4 e1000 and wire-speed

Hi list (and happy new year), I'm experiencing some troubles using Samba (4.1.17 debian version) over VPN. Basically we've following setup : PC === LAN ===> VPN (WAN) ==== LAN ===> Samba file Server Copying big (say > 1MiB) files from PC to Samba file server almost always ends up with a NT_STATUS_IO_TIMEOUT error (or "a network error occured" if trying to copy from

Hi all, I order to reach maximum performance on my centos kvm hosts I have use these params: - On /etc/grub.conf: kernel /vmlinuz-2.6.18-164.11.1.el5 ro root=LABEL=/ elevator=deadline quiet - On sysctl.conf # Special network params net.core.rmem_default = 8388608 net.core.wmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216

I have a beefy machine (Intel dual-quad core, 16GB memory 2 x GigE) I have loaded RHEL5.1-xen on the hardware and have created two logical systems: 4 cpus, 7.5 GB memory 1 x Gige Following RHEL guidelines, I have it set up so that eth0->xenbr0 and eth1->xenbr1 Each of the two RHEL5.1 guests uses one of the interfaces and this is verified at the switch by seeing the unique MAC addresses.

I'm using Samba & smbfs to make directories on a Linux file server available across a switched Gigabit network. Unfortunately, when mounting the shares to another Linux system with smbfs, the performance is terrible. To test the setup, I created both a 100mb and 650mb file and transferred them with ftp, smbclient, and smbfs (mounted share). I also used iperf to send each file, just out of

I have four NFS servers running on Dell hardware (PE2900) under CentOS 5.7, x86_64. The number of NFS clients is about 170. A few days ago, one of the four, with no apparent changes, stopped responding to NFS requests for two minutes every half an hour (approx). Let's call this "the hang". It has been doing this for four days now. There are no log messages of any kind pertaining

Hi, I''m doing some test on a network 10 gb nics and xen with version 3.1 i''m measuring 2.5 gb/sec from domU to an external physical machine with iperf. switching to 3.2 has reduced the measured performance to 40-50 Mb/sec. did anything change in the network interface? can someone help me? thanks _______________________________________________ Xen-users mailing list

OS: CentOS 5.0 x86. Hi, I am using CentOS 5.0 at home, ADSL ~16 Mbps/~1 Mbps Internet connection and my ping time to my ISP is 160-170 msec. When downloading something with Firefox, I am getting download speeds of about 100-180 KB/sec (for example when downloading SP2 of XP from MS server). Are the CentOS networking settings OK for this kind of latency, or do I have to change some settings?

Am 07.01.2016 um 11:58 schrieb Sébastien Le Ray: > Hi list (and happy new year), > > I'm experiencing some troubles using Samba (4.1.17 debian version) over > VPN. Basically we've following setup : > > PC === LAN ===> VPN (WAN) ==== LAN ===> Samba file Server > > Copying big (say > 1MiB) files from PC to Samba file server almost > always ends up with a

Le 07/01/2016 12:22, Reindl Harald a écrit : > > /usr/sbin/ifconfig eth0 txqueuelen 100 > ______________________________________________ > > ifcfg-eth0: > > ETHTOOL_OPTS="-K ${DEVICE} tso on lro off; -G ${DEVICE} rx 128 tx 128" > ______________________________________________ > > sysctl.conf: > > net.core.rmem_max = 65536 > net.core.wmem_max = 65536

i all I use linux as GiGE router and have 6 NIC on it Those days the NIC interrupt takes around 100% CPU but the system is 4G memroy and 8 CPU. I can't see any error packet in this NIC interface too After I block the udp, the %CPU drops. but the UDP only takes around 8M in general We use UDP traffic for voice. Do you have any suggestion ? increase the kernel parameter? Thank you so much

Hi I was wondering if you ever got better performance out of your Gigabit/IDE/Fc2? I am facing a similar situation. I am running FC2 with Samba 3.x My problem lies in not that I am limited to 10 MBytes per second sustained. I think it's related to this pdflush and how it's buffers are setup. (I have been doing some research and before 2.6 kernels bdflush was the method that was used and

Hi all, I have a rhel 5.1 xen server with two rhel 3 ES hvm guests installed. Both rhel3 guests use an internal xen bridge (xenbr1) which it isn''t binded to any physical interface host. On this bridge throughput it is very very poor, only 2.5 Mbs. How can I increase this throughput??? Many thanks. -- CL Martinez carlopmart {at} gmail {d0t} com

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

I thought that the below email would be of interest to LARTC readers. I wasted quite a bit of time tracking down this "feature" (bug?). Any comments that shed light on this would be appreciated. In short, "tc filter" + htb + bridging works only with ip_forward off. Andrew Athan ----------------------------------------------------------------------- All: It seems that

Hi, On one of our asterisk systems that is quite busy, we are seeing the following from 'netstat -s': Udp: 17725210 packets received 36547 packets to unknown port received. 44017 packet receive errors 17101174 packets sent RcvbufErrors: 44017 <--- this When this number increases, we see SIP errors, and in particular Qualify packets are lost, and

Sysctl Values ------------------------------------------- net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.ipv4.tcp_window_scaling = 1 # vm.max-readahead = ? # vm.min-readahead = ? # HW Controler Off # max-readahead = 1024 # min-readahead = 256 # Memory over-commit # vm.overcommit_memory=2 # Memory to

We use SMB to transfer large files (between 1GB and 5GB) from RedHat AS4 Content Storage servers to Windows clients with 6 DVD burners and robotic arms and other cool gadgets. The servers used to be Windows based, but we're migrating to RedHat for a host of reasons. Unfortunately, the RedHat Samba servers are about 2.5 times slower than the Windows servers. Windows will copy a 1GB file

Hi, I have a problem with file transfers between a windows systems and unix systems. I have one win32 desktop (intel e6400 2Gb Ram), one win32 laptop (p-m 2Ghz). Also one linux laptop (p-m 1.4GHz) and one opensolaris desktop (intel e4400 1GB Ram). The two laptops have built-in 100Mbit ethernet and desktops have 1Gbit ethernet on the motherboard. Both desktops use a Marvell Yukon. The file

I've been experiencing some intermittent problems accessing at NetApp server via NFS and automount. I'm running CentOS 5.2 (fully updated) on all my servers and workstations. Usually, everything is working just fine, when suddenly we get the following error: /bin/sh: /home/epd/srcref/swtools/Crontabs/ run_release_requests.sh: Permission denied This is actually an email from

I get these errors from the following settings in /etc/sysctl.conf file: # Custom Settings: net.ipv4.tcp_max_syn_backlog=2048 net.ipv4.tcp_fin_timeout=30 net.ipv4.tcp_keepalive_intvl=10 net.ipv4.tcp_keepalive_probes=7 net.ipv4.tcp_keepalive_time=1800 net.ipv4.tcp_max_tw_buckets=360000 net.ipv4.tcp_synack_retries=3 net.ipv4.tcp_rmem="4096 87380 16777216" net.ipv4.tcp_wmem="4096