Where is my bottleneck?
m-abel at columbus.rr.com
Fri Mar 12 05:48:25 GMT 2004
I did some more investigating on the ssh slowdown theory... I also found
one negative comment concerning my router (Linksys BEFSR81) which might
In a nutshell: ssh between these two machines can run at least 43
Mbit/s. I created a 100 Mbyte file from /dev/urandom, and ssh brought
it back (ssh majority cat delete.me >file) in under 20 seconds. No
compression (it was reasonably random), and entirely accurate (I did
md5sums at both ends).
So I'm still seeing cat > 43 Mbit/s and rsync < 2 Mbit/s, both using
ssh. Round trip packet time is under 0.5 ms, and I looked through a
bunch of IP tuning stuff too and my buffers and features seem fine.
I wonder what's missing here. Even if I get this working via rsh or
direct-to-rsync-server, it's still reasonable to think it would work
More information about the rsync