[emstar-design] Adding logfile snapshot feature

[Deborah Estrin]

This does sound quite useful
Should we have a session with eric sometime
I think the recent really cool NIMS field trip data collection to white
mountains is a very good example of this and eric was there and would be
able to articulate what they did and what he needs


On 8/4/05 11:07 AM, "Nithya Ramanathan" <nithya at CS.UCLA.EDU> wrote:

> 
>> Why not have processes write log data per default to a ring buffer and
>> then when desired, redirect that data to a file. That way you have a
>> nice, fixed memory buffer for logs, and you can easily use some
>> mechanism such as a socket (or fusd for that matter) to access it....
>> 
> 
> 
> this is actually what we do right now in emstar :)
> however, what the original request was based on the need to capture
> specific snapshot. for example, i was thinking about eric using the
> web-server, and if he was experiencing a bug in a feature, i thought it
> would be convenient if he could do: "start snapshot", try out whatever
> he's trying to do, and then "stop snapshot", and then have some easy
> way for him to send us all of the logs he captured. and maybe the "start
> snapshot" also ups the log-level temporarily...
> 
> 
>> Just a thought.
>> 
>> --
>> John Ewart
>> PGP: 0xF820E604
>> "Quis custodiet ipsos custodes?"
>> 
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Prof. Deborah Estrin
Jon Postel Chair in Computer Networks
Computer Science Department, UCLA
Director, Center for Embedded Networked Sensing (CENS)
3531H Boelter Hall
Los Angeles, CA 90095
http://cens.ucla.edu/Estrin
Fax: 3102063053