similar to: Any (known) scaling issues?

Hello, I was wondering if its possible to extract the checksum that rsycn creates to verify the transfer of a file was successful? Id like to store it so I can verify the files at a later time. I was thinking I could just run an md5sum prior to rsync, but then I figured if rsycn is already doing it maybe I can just copy that checksum. I have sever tb's of smaller files I need to transfer so

I've got a pair of identical CentOS 6.7 servers, with SuperMicro X8DTE-F motherboards, these have 2 each Intel 82574L ethernet ports. The eth0 ports are plugged in with 10' runs of brand new cat 5e cable to a Cisco Nexxus 9000 switch (provided by the data center). These servers keep coming up at 100baseT rather than gigE. I've swapped ports and cables with a different server,

hi guys, we are using rsycn without problem but today after some problems in one of the servers, the dc tech did find the rsync is effecting in the switch where they have the server connected broadcasting all the ports in the switch at the dc????? This is what the dc tech said: "It appears that your server is broadcasting to every port on the switch that you are connected to" Any

Hi there, When Lustre is configured in an environment where there are multiple paths to the same destination of the same length (i.e. two paths, each one hop away), which path(s) will be used for sending and receiving data? I have my cluster configured with two OSTs with two GigE NICs in each. I am seeing identical performance metrics when I use LACP to aggregate, and when I use two separate

Timo Sirainen <tss at iki.fi> wrote: > Two potential problems I see with this: > 1. If users can do any changes on the secondary server (flag changes, > saving new mails, etc), you're going to have problems syncing the > changes back (without losing any changes or causing other problems). > > 2. If users can access the secondary server via IMAP clients, the > clients

I have a samba server with 2 ethernet ports, one of which is a gigabit port. When connecting from a windows client that has a crossover to the gigabit port, and a crossover to the 100Meg port: If I connect via \\gige.ethernet.address\foo , and copying a large file, windows reports outbound traffic on the gige port and return traffic on the 100Meg port. Thus, it seems the samba server sees the

Yes, I get more than 30MB/s performance. The benchmark I use (NetBench) is essentially CPU bound, such that a faster processor = faster performance. With a very fast hardware config (dual 3.2GHz processors), I've been able to hit around 100MB/s. Changing the RAM or other attributes does not buy me much, it seems that processor power is the bottleneck (at least in my case). When doing your

Folks, I realize this is off topic, and if anyone can suggest a better source for the question, I'd be glad to go there. Novell SUSE's support is unresponsive, however. My problem is this: I'm running 9.3 Pro on an Intel server board that has two NIC chips built in (a 10/100 and a GigE). I've since added a Netgear GigE NIC. However, every time I reboot, the NICs assigned to

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.

At 01:54 PM 1/8/2015, John R Pierce wrote: >On 1/8/2015 11:32 AM, david wrote: >>The price point of Intel's NUC unit makes it attractive to use as a >>server that doesn't have significant computational load. In my >>environment, a USB connected hard-drive could provide all the >>storage needed. I wonder if anyone has had experience with it, and can answer:

Folks, I'm trying to add a network interface card to my SUSE 9.3 box, and I'm not having much luck with a US Robotics version. What manufacturer do any of you use in your machines--either 10/100MB or GigE NIC? Thanks Eric Hines There is no nonsense so errant that it cannot be made the creed of the vast majority by adequate governmental action. --Bertrand Russell

I'm trying to maximize throughput between my Samba server and my Win2k (SP3 and 4) clients. Samba's configured to allow up to 64k packets and the server is on a GigE network (3com card, acenic driver) with SCSI UW2 drives (software RAID1 and RAID5 volumes). All clients are 100MB/sec FDX on a switched LAN. I can get sustained 35MB/sec transfers (read and write) on the disk subsystem

Hi everyone. Has anyone experienced rsync 2.6.0 causing huge amounts of system load? Especially on Linux 2.4? We recently upgraded our "push" machine to rsync 2.6.0 and the next push that went out (rsyncing about 3GB of data to 15 servers sequentially over gigabit ethernet) caused the box to hit 110.59. We only know the load because snmpd was still working, but nothing else in userspace

I used to be able to modify my modules.conf file so that certain NIC cards would load specific drivers. Has this changed in kernel 2.6 i.e. <snip /etc/modules.conf> alias eth0 e100 alias eth1 e1000 </snip> It used to be that I could reverse this order and eth0 would be the GigE card.

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

Hello, Working a few servers that are transferring data across country with a 75ms delay on a GIGE connection. We can tune the tcp buffers on linux to improve the connections using iperf. Does rsync use the tcp buffers of the OS or does it override these settings? Thanks, Neal -------------- next part -------------- An HTML attachment was scrubbed... URL:

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

I have a Linux Server (3.06 Xeon) with a very fast RAID array -- reads at around 500 MB/sec as clocked by Bonnie++. I have 6 GigE nics on my machine -- on two 133Mhz PCI-x bus segments (not on the same bus as the RAID drives) I have noticed two puzzling things and I'm wondering if anybody has any ideas about why I'm seeing these: 1) transfer speeds over a single NIC from a single

I have the following network configuration: Server FreeBSD 6.2 P4 3Ghz, 1GB RAM Samba 3.0.24 (options: WITH_ADS, WITH_PAM, WITH_SENDFILE, WITH_UTMP, WITH_WINBIND) Standard FreeBSD NFS Server Adaptec 2410SA controller with 4 drives running RAID5 Broadcom GigE Client Windows XP MCE Microsoft SFU 3.5 running NFS client over UDP The client and the server are

GigE wasn''t giving me the performance I had hoped for so I spring for some 10Gbe cards. So what am I doing wrong. My setup is a Dell 2950 without a raid controller, just a SAS6 card. The setup is as such : mirror rpool (boot) SAS 10K raidz SSD 467 GB on 3 Samsung 256 MLC SSD (220MB/s each) to create the raidz I did a simple zpool create raidz SSD c1xxxxx c1xxxxxx c1xxxxx. I have