First off:
Thank you, Sami, for getting SSH2 to work on my system. It took Sami about
a month, but he finally fixed a strange problem I'd been having with
hostbased auth. Hopefully the official patches will be out soon.
I currently run backups to our tape server via rsh, and I'd like to use
SSH instead. I have it working in a test environment, but the performance
is very slow. Perhaps I'm missing something? The FAQ mentioned using
blowfish instead of 3DES, but this made no difference.
My test platform is SPARC 5 running Solaris. Slightly old hardware, yes,
but at least par with the 486s and low-end 586s discussed in the "Should I
turn off encryption?" section of the FAQ. This FAQ section mentions the
RC4 cipher as being quite fast, though RC4 isn't implemented in (my
install of) SSH2 and that cipher may have been retired.
As a test, I use these:
tar cvf - /usr/local | rsh kenny -l gregor "cat > foo.tar"
tar cvf - /usr/local | ssh kenny -l gregor -c blowfish "cat > foo.tar"
With RSH, 170 MB backs up in 5 minutes. This comes out to 34 MB per minute
or 568 kBps, or 32 minutes per GB.
With SSH, the same 170 MB backs up in 19 minutes. This is 9 MB per minute,
150 kBps, or 111 minutes per GB.
I'd much appreciate any suggestions about speeding things up a bit, as
long as the suggestions don't involve buying faster hardware. ;)
--
Gregor Mosheh
[EMAIL PROTECTED]
Systems Admin, Humboldt Internet
707.825.4638
