similar to: high performance ssh support?

Hi, http://www.psc.edu/networking/projects/hpn-ssh/ Clearly, the HPN patches significantly boost throughput performance. This enhancement is entirely from tuning the SSH buffer sizes. Alex Tavcar

Dear CentOS lovers, Could you consider to include a patch, http://www.psc.edu/networking/projects/hpn-ssh/ for openssh maybe as CentosPlus packages? It has great speed impact for long-distance ( high delay ) transfer. Regards, Yuji Tsuchimoto

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

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

http://bugzilla.mindrot.org/show_bug.cgi?id=1311 Summary: Performance on high BDP networks Product: Portable OpenSSH Version: 4.6p1 Platform: All OS/Version: All Status: NEW Severity: normal Priority: P2 Component: Build system AssignedTo: bitbucket at mindrot.org ReportedBy: imorgan at

[NB: General information regarding HPN-SSH can be found at http://www.psc.edu/networking/projects/hpn-ssh ] This is a beta release of HPN12 but I'd like to get some user experiences with it if anyone is so inclined. This version of the HPN patch more closely conforms to the openssh nomenclature and coding style, it eliminates the use of command line switches in favor of -o options, it

Hi. I wonder what is a current position on HPN-SSH patch for OpenSSH is? I have seen a progress was made, so I was wondering if that patch is safe enough and if anyone is building it? Maybe separate package to accept connections to special port for local network (without NFS/Samba)? It is supposed to provide up to 20x more speed over ssh. Homepage is here http://www.psc.edu/index.php/hpn-ssh

Hi everyone, has anybody successfully integrated the patches from http://www.psc.edu/networking/projects/hpn-ssh/ into openssh, and maybe produced a .spec file for this purpose that s/he is willing to share? thx, Kay

This is a preliminary release and as such should be used at your own risk. In my testing the application builds under OS X and Linux, passes the regression tests, and file transfer tests on our test connections exhibited a 1600% increase in performance (1.4MB/s versus 20.9MB/s 46ms RTT). This patch (hpn12v10) is available from

On the request of a coworker looking for more information about our SSH users I developed a patch that provides extended logging capability for SSHD. Its been written with an eye towards machine parsing. This patch will write the following information to the standard system log: remote ip, remote port, & remote user name protocol number and client version information Encryption method, MAC

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

The results, for anyone interested, can be found here http://www.psc.edu/networking/projects/hpn-ssh/results.html Long story short, there doesn't seem to be any notable difference between the two anymore. I still have a few more test combinations to run (<.5ms rtts and against cygwin) so the conclusions might change but, at this point, I'm no longer seeing any sort of performance

HPN-SSH is a set of high performance patches which add dynamic window sizing, none cipher switching, enhanced server logging, and a multi-threaded cipher implementation to OpenSSH. We've just updated the patches to the OpenSSH 4.9 release and made them available from http://www.psc.edu/networking/projects/hpn-ssh/ Comments, questions, and criticisms are always welcome. Thanks for your

Howdy, It's been a while since I've made an announcement here but I wanted to mention that we've just released a set of HPN-SSH patches for OpenSSH6.2. The release marks the first time I've had the resources/help to actually do anything more than just forward port the patches in quite a while. http://www.psc.edu/index.php/hpn-ssh Items of note: 1) The multithreaded AES-CTR

Hi, I tried different encryptions like arc four, but always with the same result. BTW: googling shows some similar questions and they are stuck on set same speed +-. But non of that solutions helped me. /G?tz > Am 11.08.2015 um 12:14 schrieb Eero Volotinen <eero.volotinen at iki.fi>: > > Usually problem in encryption. > > try cipher arcfour or apply hpn patches to

The HPN patch set has been updated to work with OpenSSH4.6. This patch can help improve performance of bulk data transfers when using SSH, SCP, or SFTP. Please see http://www.psc.edu/networking/projects/hpn-ssh for more information. The patch is available from the above address or directly with http://www.psc.edu/networking/projects/hpn-ssh/openssh-4.6p1-hpn12v16.diff.gz If you have any

On multiple core systems OpenSSH is limited to using a single core for all operations. On these systems this can result in a transfer being processor bound even though additional CPU resources exist. In order to open up this bottleneck we've developed a multi-threaded version of the AES-CTR cipher. Unlike CBC mode, since there is no dependency between cipher blocks in CTR mode we

The HPN12 patch available from http://www.psc.edu/networking/projects/hpn-ssh addresses performance issues with bulk data transfer over high bandwidth delay paths. By adjusting internal flow control buffers to better fit the outstanding data capacity of the path significant improvements in bulk data throughput performance are achieved. In other words, transfers over the internet are a lot

Ben Bennett and I (both researchers at the Pittsburgh Supercomputing Center) have released the HPN13v1 patch set for OpenSSH 4.7p1. Primarily this release incorporates the previously announced multi-threaded AES-CTR mode cipher which will allow users to make better use of multi-core environments. In our test environments we've seen upwards of a 100% improvement in throughput performance

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