Slow ssh


#1

hi all.

i have a strange problem when SSHing into DH from home.
altho my internet speeds are fine,
interacting with the shell is very slow.
sometimes i have to wait 3 or 5 seconds after i type something for it to show up, which is pretty debilitating.

anyone else seen this ?

thanks,
orion

$ ping napoleon.dreamhost.com
PING napoleon.dreamhost.com (205.196.218.26): 56 data bytes
64 bytes from 205.196.218.26: icmp_seq=0 ttl=55 time=73 ms
64 bytes from 205.196.218.26: icmp_seq=1 ttl=55 time=27 ms
64 bytes from 205.196.218.26: icmp_seq=2 ttl=55 time=22 ms
64 bytes from 205.196.218.26: icmp_seq=3 ttl=55 time=32 ms
64 bytes from 205.196.218.26: icmp_seq=4 ttl=55 time=32 ms
64 bytes from 205.196.218.26: icmp_seq=6 ttl=55 time=24 ms
64 bytes from 205.196.218.26: icmp_seq=7 ttl=55 time=23 ms
64 bytes from 205.196.218.26: icmp_seq=8 ttl=55 time=24 ms
64 bytes from 205.196.218.26: icmp_seq=9 ttl=55 time=24 ms
64 bytes from 205.196.218.26: icmp_seq=10 ttl=55 time=32 ms

----napoleon.dreamhost.com PING Statistics----
11 packets transmitted, 10 packets received, 9.1% packet loss
round-trip (ms) min/avg/max/med = 22/31/73/26

… hmm, is it that 9% packet loss ?
i’m going over a wireless lan, maybe that’s it.

i tried running a wire and didn’t notice any difference,
but i didn’t check the packet loss either so i’ll try that again.


#2

hmm,
well getting the wireless out of the loop dropped the packet loss to 0%, but i’m still getting some fairly significant delay in shell responsiveness.

sshing in from work, which has a really fat pipe, is very responsive.

so maybe it’s just the inherent delay in DSL.

i’m using fairly fast speakeasy DSL, winXP, putty.


#3

If that latency was caused by your connection, I would expect to see ping times of 3000ms not 20-30ms.


#4

right, the latency is good
but i wondered if high packet loss was the issue.

… which i’ve decided it’s not,
since it’s still quite noticable with 0 or 1% packet-loss and fast pings.

thanks for the reply