[OmniOS-discuss] Failing zfs send / receive

[Dominik Hassler]

hi chris,

have you ever checked if you run out of entropy?

On 12/28/2013 06:22 PM, Chris Nagele wrote:
> Hi Michael,
> 
> I tried those settings with no luck. I also tested network latency,
> routes, throughput with netperf, etc. The network side is perfectly
> fine with no packet loss over a long period of time.
> 
> What I do see is ssh hanging for 10 seconds or so if I run commands
> over it. For instance, if I run "ssh -vvv host ls -l" a bunch of times
> it is usually very fast, but will hang every 30 times for several
> seconds.
> 
> Due to the way our backups work we run a lot of remote ssh commands
> (100+ every 60 seconds). Is there something we could try in terms of
> increasing ssh performance? Or is there anything else I can look at to
> troubleshoot?
> 
> Thanks for the help.
> 
> Chris
> 
> On Thu, Dec 26, 2013 at 12:52 PM, Michael Rasmussen <mir at miras.org> wrote:
>> On Thu, 26 Dec 2013 12:31:30 -0500
>> Chris Nagele <nagele at wildbit.com> wrote:
>>
>>>
>>> Any ideas what could cause this timeout or if it is something I can increase?
>>>
>> Do you have this config in sshd_config on the remote side:
>> GSSAPIAuthentication no
>>
>> If GSSAPIAuthentication is active you sometimes see timeouts cause by
>> the remote side waiting for GSSAPIAuthentication which by default first
>> will timeout after 20 sec.
>>
>> Other configs of interest:
>> LookupClientHostnames no
>> VerifyReverseMapping no
>>
>> --
>> Hilsen/Regards
>> Michael Rasmussen
>>
>> Get my public GnuPG keys:
>> michael <at> rasmussen <dot> cc
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xD3C9A00E
>> mir <at> datanom <dot> net
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE501F51C
>> mir <at> miras <dot> org
>> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xE3E80917
>> --------------------------------------------------------------
>> Lost: gray and white female cat.  Answers to electric can opener.
>>
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