similar to: How to speed up Rsync transfers

http://www.psc.edu/networking/projects/hpn-ssh/ Mike Stevens and I just released a new set of high performance networking patches for OpenSSH 3.9p1, 4.0p1, and 4.1p1. These patches will provide the same set of functionality across all 3 revisions. New functionality includes 1) HPN performance even without both sides of the connection being HPN enabled. As long as the bulk data flow is in the

What's the best way to do this? Daily, jpg images are added to an inhouse server. Everynight I want to backup these images to a server offsite, via rsync. What I want is to determine what to set the bwlimit to. I also want to estimate how many MB's of images I can move nightly. Thanks Dan

Is there any piece of software that I can use to run between a client and a linux or windows server with a smb/cifs share that will test network speed, latency, sustained read/writes, multiple file create, read, write, close, etc.. etc.. over X period time? I'm testing a Centos server with samba and Windows 2k3/8 servers on the other end of a T1 connection and while I know the T1 bandwidth

We see absolutely dismal performance from Canberra to Perth via Aarnet or Grangenet (gig connections across the country). With standard rsync on a tuned tcp stack, we see about 700k/s. I started playing with the --sockopts and have increased the performance to 1.4M/s which is better, but still way off the pace. There are similar patches for ssh at

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

Hello all, I am trying to connect to my remote MS SQL server from Ubuntu. I have followed HowtoConnectToMicrosoftSQLServerFromRailsOnLinux<http://http://wiki.rubyonrails.org/rails/pages/HowtoConnectToMicrosoftSQLServerFromRailsOnLinux>as best that I can. TSQL is working, example below. My configs are found below. When I run isql : > isql -v pubs name password [IM002][unixODBC][Driver

Assuming in a secure and trusted env, we want to get the maximum transfer speed without the overhead from ssh. Thanks. Fred -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20121213/654f543f/attachment-0001.html>

Hello all. We are moving from Xenserver 6.5 environment to KVM because we can't use 10gbe speed in our VM's so we decided to test KVM. To inicial test I've create script, using qemu commands, to build two VM's and test the nic speed. Each VM has one nic, using virtio, into it own bridge. In this bridge we associate one 10gbe physical nic. They can communicate each other. When

Ok so maybe someone can explain this to me. I've been banging my head against the wall on this one for several weeks now and the powers that be are starting to get a little impatient. What we've got is an old FoxPro application, the FoxPro .dbf's being stored on a Linux fileserver using Samba (Fedora 3 currently, using Fedora 5 on the new test server). We're having speed

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:

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

Hello, I know that this has been asked before, just wanted to mention that I, too, would like to see the HPN SSH functionality incorporated in the standard OpenSSH. Would there be technical disadvantages integrating the changes? I know we are all pretty busy, but I would certainly spend time to help, e.g. with testing, documentation, etc. Cheers --pwo -- Peter W. Osel - http://pwo.de/ - pwo

Good day all I've tried my iax conf and I'm struggling.So I want to know If someone else got this working and if they can pleas send my their configs I have to asterisk server,in different tows,both offices connected wit a direct line so both servers are on the same network running SIP.Each town got different extension register to each sever.Town A=100+ town B=200+ How do I get town A

https://www.psc.edu/networking/projects/hpn-ssh/hpn-v-ssh-tput.jpg "SCP and the underlying SSH2 protocol implementation in OpenSSH is network performance limited by statically defined internal flow control buffers. These buffers often end up acting as a bottleneck for network throughput of SCP, especially on long and high bandwith network links. Modifying the ssh code to allow the buffers

Similar to another thread that was posted recently (archive: https://groups.google.com/forum/#!topic/linux.samba/sRvmCb25U_s) I'm trying to get multichannel working with a virtual Linux server running version 4.4.5. Output of 'uname -a': "Linux filehost 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:42:33 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux" I have two VirtIO NICs on my

I am trying to trouble shoot one of my ISP's network and compare to my other ISPs offering. Although network 1 is reasonably fast and has low enough latency, voice quality is not good and the reason for this is not readily apparent using standard network tools. What tools can be used to assess the quality of the network in terms of it's suitability for voice? I am using ping, mtr,

Dear All I have one centos server equipped with WiFi . I want to measure data rate speed on this connection . Is there any utility on my centos that can measure data speed on one specific Ethernet connection when transferring large size files through WiFi connection? Thank you -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hello Are there plans to merge the hpn-ssh (http://www.psc.edu/networking/projects/hpn-ssh/) and the LPK (http://code.google.com/p/openssh-lpk/) into the mainline openssh. Adding lpk has been logged as a bug in bugzilla as They are two patches that I always apply as the performance boost from hpn-ssh is substantial to say the least, and centralisation of the authorized_keys into a LDAP server

Hello list, right now SSH Tunnel / scp is reaches just around 76Mb/s on my E5 Xeon using AES-NI but openssl reaches around 600-700Mb/s using 128aes-cbc cipher. As far as i understand http://www.psc.edu/index.php/hpn-ssh this is due to very small buffers in ssh / scp. Is there any work on this? Like autotuning the buffer size? Are there plans to integrate the hpn patches? Greets, Stefan