http://bugzilla.mindrot.org/show_bug.cgi?id=946
Summary: scp slow file transfers, even with -1 -c blowfish
Product: Portable OpenSSH
Version: 3.8.1p1
Platform: ix86
OS/Version: Cygwin on NT/2k
Status: NEW
Severity: major
Priority: P2
Component: scp
AssignedTo: openssh-bugs@mindrot.org
ReportedBy: zippy@cs.brandeis.edu
I am using scp and seeing file transfers that are far, far below my wire speed.
Using the scp default settings, I get ~300kB/s on a 100Mb/s networks and a
10Mb/s network. Using ssh version 1 and blowfish I get 500kB/s-1MB/s, again on
both the networks.
I am running scp on Cygwin on a 1GHz Centrino x86 machine (Windows XP Pro SP2).
The process monitor reports the CPU on the sending machine is around 50%. In
transfering a 200MB movie (avi) I see the following stats:
$ scp 200MB-movie.avi foo@bar:/a/b
200MB-movie.avi 2% 4848KB 480.8KB/s 06:00
I see this with any destination machine on two different LANs: a Suse64 AMD64
with no load and a RAID5 array, a P133 FreeBSD box with no load and a single IDE
drive, and a Linux box with moderate load.
If I force scp to use ssh protocol version 1 and blowfish, I get better
performance but still far below wire speed:
$ scp -1 -c blowfish 200MB-movie.avi foo@bar:/a/b
200MB-movie.avi 7% 14MB 813.9KB/s 03:21 ETA
I ran top on one of the destination machines (Suse64 AMD64) and the CPU was
under 10%.
I do not have a .ssh config file.
$ ssh -v
OpenSSH_3.8.1p1, OpenSSL 0.9.7d 17 Mar 2004
Any suggestions or workarounds appreciated.
--Pat / zippy@cs.brandeis.edu
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Summary: scp slow file transfers, even with -1 -c blowfish
Product: Portable OpenSSH
Version: 3.8.1p1
Platform: ix86
OS/Version: Cygwin on NT/2k
Status: NEW
Severity: major
Priority: P2
Component: scp
AssignedTo: openssh-bugs@mindrot.org
ReportedBy: zippy@cs.brandeis.edu
I am using scp and seeing file transfers that are far, far below my wire speed.
Using the scp default settings, I get ~300kB/s on a 100Mb/s networks and a
10Mb/s network. Using ssh version 1 and blowfish I get 500kB/s-1MB/s, again on
both the networks.
I am running scp on Cygwin on a 1GHz Centrino x86 machine (Windows XP Pro SP2).
The process monitor reports the CPU on the sending machine is around 50%. In
transfering a 200MB movie (avi) I see the following stats:
$ scp 200MB-movie.avi foo@bar:/a/b
200MB-movie.avi 2% 4848KB 480.8KB/s 06:00
I see this with any destination machine on two different LANs: a Suse64 AMD64
with no load and a RAID5 array, a P133 FreeBSD box with no load and a single IDE
drive, and a Linux box with moderate load.
If I force scp to use ssh protocol version 1 and blowfish, I get better
performance but still far below wire speed:
$ scp -1 -c blowfish 200MB-movie.avi foo@bar:/a/b
200MB-movie.avi 7% 14MB 813.9KB/s 03:21 ETA
I ran top on one of the destination machines (Suse64 AMD64) and the CPU was
under 10%.
I do not have a .ssh config file.
$ ssh -v
OpenSSH_3.8.1p1, OpenSSL 0.9.7d 17 Mar 2004
Any suggestions or workarounds appreciated.
--Pat / zippy@cs.brandeis.edu
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.