On Thu, 12 May 2011, Dmitry Makovey wrote:
we have some weird problem with EL6 box which serves as a KVM host for 3
VMs currently. It shares the same interface with all 3 VMs (same network).
All works, except from time to time machine behaves very slow in console
(ok, SSH connection) and it happens only from time to time.
[...]
It may be unconnected but I have a RHEL6 box which also occasionally has an
issue with slow SSH connection. By that I mean you type "ssh rhel6host",
the password prompt comes up quickly, but after entering the password and
hitting return there's a palpable delay (sometimes) before the prompt
appears. Not every time, but often. Sometimes as long as four to five
seconds. A RHEL6 KVM guest I installed on it also has the same issue
(sometimes). I've run ssh with -vvv and sshd with -vvv and not seen
anything untoward. DNS is on the local LAN and reports no issues either.
All connections are from RHEL5 hosts. Just somtimes connection is... slow.
Ben
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Unix Support, MISD, University of Cambridge, England
Plugger of wire, typer of keyboard, imparter of Clue
Life Is Short. It's All Good.
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