[erlang-questions] "detached VM" vs "VM under screen"

[Gianfranco Alongi]

My reasoning (without any investigation) was that since screen keeps
the output  (so you can scroll back in the buffer),
this would give some kind of performance penalty in relation to a
detached mode on a high output scenario.

/G

On Fri, Jan 6, 2012 at 1:41 PM, Zabrane Mickael <zabrane3@REDACTED> wrote:
> Why? I see no reason for that to happen.
>
> Regards,
> Zabrane
> On Jan 6, 2012, at 12:19 PM, Gianfranco Alongi wrote:
>
>> I had concerns that keeping it in screen would use more memory if the
>> node started spewing messages?
>>
>> Am I right?
>>
>> On Fri, Jan 6, 2012 at 4:22 AM, Fred Hebert <mononcqc@REDACTED> wrote:
>>> The tab support has been added to R15, if I recall.
>>>
>>> We run erl in -noshell mode, but always distributed. If the need
>>> arises, I use a remote shell (still started from the same node) to do
>>> my diagnostics/debugging, just connecting as a hidden node and
>>> starting a remote job with ^G. I find it nicer than using screen,
>>> especially since software like screen or tmux have sometimes frozen on
>>> me. In these cases, I think it's simpler to just start a new remote
>>> shell from a new connection and leave the application undisturbed.
>>>
>>> You just have to be careful not to type 'q()', 'halt()' or
>>> 'init:stop()' in the job running on the production node ;)
>>>
>>> I generally think it's nicer to do it that way than in a screen
>>> session -- that way you can daemonize your Erlang processes, and
>>> integrate them better in their environment.
>>>
>>> On Thu, Jan 5, 2012 at 12:19 PM, James Aimonetti <james@REDACTED> wrote:
>>>> -----BEGIN PGP SIGNED MESSAGE-----
>>>> Hash: SHA1
>>>>
>>>> We run everything in detached mode, and use a bash script to connect to
>>>> the VM when we need access to it directly.
>>>>
>>>> Our bash script boils down to:
>>>>
>>>> exec erl $ERL_COOKIE -name ${SHELL_NAME} -remsh ${REMOTE_SHELL}
>>>>
>>>> with SHELL_NAME usually generated by SHELL_NAME = "con_$(date
>>>> +%s)@`hostname`".
>>>>
>>>> You won't get tab-complete on your modules/functions (I think the
>>>> standard erlang modules work though), but it works well enough for our
>>>> purposes.
>>>>
>>>> On 01/05/2012 05:45 AM, Max Bourinov wrote:
>>>>> We also run everything under screen. And it is nice to have shell = access
>>>>> to all things in the running system, but you must know what you do in there
>>>>> :-)
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>> On 05.01.2012, at 17:26, Jesse Gumm <gumm@REDACTED> wrote:
>>>>>
>>>>> I run under screen, since I run screen for everything already, it's nice to
>>>>> always have the erlang shell up and ready if I need it.
>>>>>
>>>>> -Jesse
>>>>>
>>>>> --
>>>>> Jesse Gumm
>>>>> Owner, Sigma Star Systems
>>>>> 414.940.4866
>>>>> www.sigma-star.com
>>>>> @jessegumm
>>>>> On Jan 5, 2012 7:03 AM, "CGS" <cgsmcmlxxv@REDACTED> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> One major preference to use -detached (implies -noinput which implies
>>>>>> further -noshell) option is when you want to create a persistent
>>>>>> application which doesn't depend on your connection with the machine where
>>>>>> you run the application. It is similar with "nohup" command under Linux. It
>>>>>> also implies the use of less resources than "screen", but with no
>>>>>> capability to interact directly with it.
>>>>>>
>>>>>> CGS
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On 01/05/2012 12:27 PM, Zabrane Mickael wrote:
>>>>>>
>>>>>>> Hi guys,
>>>>>>>
>>>>>>> Is there any preference between running a VM in a "detached mode"  (i.e
>>>>>>> erl -detached ...)
>>>>>>> or simply running it inside "screen" for example witout detaching from it
>>>>>>> (i.e erl ...) ?
>>>>>>>
>>>>>>> What are the pros/cons?
>>>>>>> Best practices?
>>>>>>>
>>>>>>> Regards,
>>>>>>> Zabrane
>>>>>>>
>>>>>>> ______________________________**_________________
>>>>>>> erlang-questions mailing list
>>>>>>> erlang-questions@REDACTED
>>>>>>> http://erlang.org/mailman/**listinfo/erlang-questions<http://erlang.org/mailman/listinfo/erlang-questions>
>>>>>>>
>>>>>>
>>>>>> ______________________________**_________________
>>>>>> erlang-questions mailing list
>>>>>> erlang-questions@REDACTED
>>>>>> http://erlang.org/mailman/**listinfo/erlang-questions<http://erlang.org/mailman/listinfo/erlang-questions>
>>>>>>
>>>>> _______________________________________________
>>>>> erlang-questions mailing list
>>>>> erlang-questions@REDACTED
>>>>> http://erlang.org/mailman/listinfo/erlang-questions
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> erlang-questions mailing list
>>>>> erlang-questions@REDACTED
>>>>> http://erlang.org/mailman/listinfo/erlang-questions
>>>>
>>>>
>>>> - --
>>>> James Aimonetti
>>>> Distributed Systems Engineer / DJ MC_
>>>>
>>>> 2600hz | http://2600hz.com
>>>> sip:james@REDACTED
>>>> tel: 415.886.7905
>>>> -----BEGIN PGP SIGNATURE-----
>>>> Version: GnuPG v1.4.10 (GNU/Linux)
>>>> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>>>>
>>>> iQEcBAEBAgAGBQJPBduYAAoJENc77s1OYoGgHYAIAJmzxw36KZ9zhEAX5EElevNp
>>>> +NCYoN83GTdwv1N8i9Br2x2gW/PFWVitDim0bVXxvoUT/40rDtXRxV3EnM4NqIkR
>>>> LTIIRD6r2HGEO4T7uIP+jypVqOnhTYZ+pzSpgGN39hnip6B4NZ3gaol8fhe2KfU8
>>>> +DGDD08urz3n2w2G/+ps3xSBd3iZSxYA9S/88gKnAxVYkh7BuqTgHjVVZWD+4aNy
>>>> Y/MlWG1kR1kpr2qOIquTktQBQybkizSD3AsrsuT5oS7t5bMMXz+DhGM1JNiPobsl
>>>> 6WCZF9T1SEtkoWjubwXY8l4JPwcsGhEu8AgSZYMT/BRCN5QzeAlEuGSQ6+ogEuU=
>>>> =ajkn
>>>> -----END PGP SIGNATURE-----
>>>> _______________________________________________
>>>> erlang-questions mailing list
>>>> erlang-questions@REDACTED
>>>> http://erlang.org/mailman/listinfo/erlang-questions
>>> _______________________________________________
>>> erlang-questions mailing list
>>> erlang-questions@REDACTED
>>> http://erlang.org/mailman/listinfo/erlang-questions
>> _______________________________________________
>> erlang-questions mailing list
>> erlang-questions@REDACTED
>> http://erlang.org/mailman/listinfo/erlang-questions
>
>
>