[Nfd-dev] Interest lifetime for NFD command interests

[Thompson, Jeff]

Does anyone know what is the command to increase the debug log level in NFD, so I can get a trace?  (nfd --help doesn't seem to say.)

- Jeff T

From: <Burke>, Jeff Burke <jburke at remap.ucla.edu<mailto:jburke at remap.ucla.edu>>
Date: Monday, April 28, 2014 6:07 PM
To: Jeff Thompson <jefft0 at remap.ucla.edu<mailto:jefft0 at remap.ucla.edu>>, Alex Afansyev <alexander.afanasyev at ucla.edu<mailto:alexander.afanasyev at ucla.edu>>
Cc: nfd-dev <nfd-dev at lists.cs.ucla.edu<mailto:nfd-dev at lists.cs.ucla.edu>>
Subject: Re: [Nfd-dev] Interest lifetime for NFD command interests


Most of the redmine issue referenced by Alex deals with timeouts in the case of an unavailable remote node, failed dns lookup, etc., but in a successful registration—such as the one taking 1200ms on the PI— what are the dominant time components?

Jeff

From: "Thompson, Jeff" <jefft0 at remap.ucla.edu<mailto:jefft0 at remap.ucla.edu>>
Date: Tue, 29 Apr 2014 00:58:44 +0000
To: Alex Afanasyev <alexander.afanasyev at ucla.edu<mailto:alexander.afanasyev at ucla.edu>>
Cc: nfd-dev <nfd-dev at lists.cs.ucla.edu<mailto:nfd-dev at lists.cs.ucla.edu>>
Subject: Re: [Nfd-dev] Interest lifetime for NFD command interests

Hi Alex,

Fair enough.  But I just tested on the Raspberry Pi, and it takes NFD 1200 seconds to answer a prefix registration.  For use on the Pi, we increased the command interest lifetime to 2000 milliseconds.

- Jeff T

From: Alex Afansyev <alexander.afanasyev at ucla.edu<mailto:alexander.afanasyev at ucla.edu>>
Date: Friday, April 18, 2014 2:10 PM
To: Jeff Thompson <jefft0 at remap.ucla.edu<mailto:jefft0 at remap.ucla.edu>>
Cc: nfd-dev <nfd-dev at lists.cs.ucla.edu<mailto:nfd-dev at lists.cs.ucla.edu>>
Subject: Re: [Nfd-dev] Interest lifetime for NFD command interests

Hi Jeff,

I agree completely with this for prefix registration commands.  I would say, there is no much value/reason to make the lifetime longer than, say, a second.  Could be shorter, but on some extremely busy systems (like our Jenkins slave), even a simple registration may take some time.

For face creation, lifetime should be longer that 4 seconds since it can take some time to create some tunnels (e.g., TCP).  We even have a redmine issue for that (http://redmine.named-data.net/issues/1455)

---
Alex

On Apr 18, 2014, at 11:51 AM, Thompson, Jeff <jefft0 at remap.ucla.edu<mailto:jefft0 at remap.ucla.edu>> wrote:

For a command interest to NFD/NRD, is there a recommended InterestLifetime (used as a timeout)?  Since it goes to the local host, can it safely be shorter than 4000 milliseconds?

Thank you,
- Jeff T
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