[CentOS] C6 server responding extremely slow on ssh interactive

Wed Jan 28 16:51:18 UTC 2015
anax <anax at ayni.com>

Hi Patrick
have you ever tried to find out on which side the hanger is: on the 
client's or on the server's, using tcpumg or the like?
That migth help a bit further on, that might.


On 01/28/2015 05:41 PM, Patrick Bervoets wrote:
> Op 28-01-15 om 17:20 schreef Marcelo Ricardo Leitner:
>> On 28-01-2015 11:15, Patrick Bervoets wrote:
>>> I have a C6 server acting as a kvm-host.
>>> When connecting with ssh the console is extremely slow and hangs for
>>> minutes at a time. Connecting to this server is not the problem.
>>> If I use: ssh root at host "whatever" I got immediate response even when
>>> interactive consoles opened with ssh are hanging.
>> Sorry, is it hanging during the session or while attempting to
>> establish a new one? If this last, it may be dns and ssh -v may help.
>> The former is weird, I don't think I ever saw it.
>>   Marcelo
> Marcelo,
> It hangs during the session. Once I'm logged in and beginning to type it
> displays 3-5 chars and then hangs for up to 15 minutes, a few more
> chars, wait, and so on.
> Checked my resolv.conf; added 'options single-request-reopen' though I
> don't know if that is helping.
> Yes it is weird; even more that individual commands sent with ssh gives
> immediate respons.
> Thanks
> Patrick
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