Slashdot Mirror

← Back to Stories (view on slashdot.org)

Multi-Threaded SSH/SCP

Posted by kdawson on from the recovering-wasted-bandwidth dept.

neo writes "Chris Rapier has presented a paper describing how to dramatically increase the speed of SCP networks. It appears that because SCP relies on a single thread in SSH, the crypto can sometimes be the bottleneck instead of the wire speed. Their new implementation (HPN-SSH) takes advantage of multi-threaded capable systems dramatically increasing the speed of securely copying files. They are currently looking for potential users with very high bandwidth to test the upper limits of the system."

2 of 228 comments (clear)

  1. Doesn't only affect Linux, but Cisco routers also. by Anonymous Coward · · Score: -1, Offtopic

    On the lower end Cisco routers (8xx-series), a router-to-router SCP is definitely horribly CPU-bound. I occasionally need to do WAN speed testing to satisfy client concerns about "teh Interwebs are slow", and normally I'd like to do just a computer-to-computer copy of a big file and graph the SNMP stats for a "flat peak" which indicates traffic policing, but every so often I don't have access to the client's computers so I have to do a router-to-router file copy and now that Cisco has removed their FTP server from their IOS firmware (due to a yet-unfixed "Multiple Vulnerabilities in the IOS FTP Server" bug that was almost a year ago) , I'm really only left with SCP and it's not up to the task of bandwidth testing because it runs dog slow.

    TDz.

  2. Re:A likely story by Anonymous Coward · · Score: -1, Offtopic

    CmdrTaco gave a presentation last night at the Holland, Michigan Taco Bell bathroom. He discovered a new way to have gay sex with 2 guys at once.