Ask Ubuntu General Room

Stefano Palazzo

21:00

@ajmitch I didn't look at it, there is also an example place in python somewhere, which I used as a base, but it's full of tabs, lines that are too long, general unpythonicness

I've been planning to offer my help with it for weeks :\

George Edison

@StefanoPalazzo What is the ID of that question?

Stefano Palazzo

@GeorgeEdison by "should not return" I mean as the first result

@GeorgeEdison 6339

George Edison

Thanks.

Stefano Palazzo

I found it using the built-in askubuntu search, which doesn't pass the test :P

George Edison

It fails on the second one.

...but that's because it's not filtering out 'to' I think.

@Jacob: So which platform would work best...?

Stefano Palazzo

21:05

you'll find you have to come up with some serious magic to make "how do I" equal to "how to", without explicitly defining it somewhere

I spend most of the day doing that

Jacob

@GeorgeEdison umm first question is does it need to be Load balnced?

George Edison

@Jacob Mine doesn't. It'll run fine the way it is.

It's already designed to avoid deadlocks between different socket connections.

...so really the only other thing I could do is multithread it.

...which is unnecessary right now.

Jacob

@GeorgeEdison Ok than windows still, though I have 2 processors on that box :)

Stefano Palazzo

@Jacob I don't need it either

@Jacob do you have a free choice of windows or linux?

Jacob

@StefanoPalazzo I have both boxes

George Edison

21:09

I could multithread it if need be.

Jacob

@GeorgeEdison I mean the processor is 3.06 GHZ, is that all you'll need?

Stefano Palazzo

@Jacob I vote linux :-)

Ask Ubuntu Twitter

twitter.com/StackUbuntu/statuses/57188382991843329

George Edison

Me too... but I'm flexible.

The advantage with Linux (Ubuntu in particular) is APT.

That makes it easy to package it and update it.

Jacob

how many apps am I hosting here?

It appears like 2?

Stefano Palazzo

21:11

From my point of view, forking in windows is quite a bit worse

And I do some of that :-)

George Edison

In other words, Windows != POSIX :)

Stefano Palazzo

@Jacob maybe, how much ram does the box have?

Jacob

@StefanoPalazzo currently 4GB

George Edison

That's plenty.

Stefano Palazzo

If ram is tight, it might be good to let @George go ahead with his program

Jacob

21:14

I can increase it, but I'm low on funds

George Edison

Mine uses about 40MB :P

Stefano Palazzo

@GeorgeEdison how much do you use?

Jacob

@StefanoPalazzo I have 3 servers though

Stefano Palazzo

@GeorgeEdison oi nice (:

George Edison

That's specifically for the AU data dump.

Stefano Palazzo

21:15

it sounds like four gigabytes will be sufficient, I'm using at most one gigabyte, including a big least-recently-used cache

George Edison

It basically uses (bytes for question titles + word size) * questions.

Stefano Palazzo

I'll make sure to put lots of →arrows← in my question so it uses a bit more ;-P

Jacob

@StefanoPalazzo How will this run under high load?

Stefano Palazzo

@Jacob load makes no difference, the memory is allocated once and forever, and it's not touched again afterwards

as for performance, I have no idea (:

George Edison

Same here.

Jacob

21:20

@StefanoPalazzo hmm, I think I found teh flaw

George Edison

No disk I/O after it loads.

Jacob

CPU is the biggest factor here

George Edison

Right.

Stefano Palazzo

@Jacob sysadmin question: How do you test such things?

simulating say 1000 requests to particular urls in one minute

something like that

Jacob

@StefanoPalazzo you hook it up and load it until something cool happens

Stefano Palazzo

21:23

heh

I only have 18 days left :-)

Jacob

@StefanoPalazzo huh until?

Stefano Palazzo

@Jacob that's when ubuntu 11.04 ships

George Edison

Are we trying to get it up and running on that day?

Jacob

@StefanoPalazzo oh? than you run it now, I run some neat apps to simulate load

Stefano Palazzo

@GeorgeEdison well, the Lens works rather well even without a server, this should be more of a long term project I s'pose

Jacob

21:25

and we see what it can take

Stefano Palazzo

that'd be super, how do we do that?

Jacob

@StefanoPalazzo it makes http calls right?

George Edison

So if it's possible... could we please have some sort of FTP access or something?

That way we can keep it up to date.

Stefano Palazzo

@Jacob it responds to http requests rather

but in future, it will get some stuff via http

Jacob

@StefanoPalazzo whoops :( thats what I meant

I can setup Apache bench mark to hammer it

Stefano Palazzo

21:28

right :-)

George Edison

Yeah... although mine just responds to TCP requests on port 12345 :)

But I can make it HTTP-compliant and change the port if necessary.

Stefano Palazzo

I should say, I don't implement the HTTP spec properly

not even 1.0

Jacob

@StefanoPalazzo Well

then you give it to users to beta test

or

Stefano Palazzo

ono, it works very well indeed

Just full disclosure :)

Jacob

you write a small app to load it with random requests

George Edison

21:31

Does mine need to implement HTTP?

Stefano Palazzo

yeah I can do that, then give it to a few people to run for an hour or so

see what happens

Jacob

@GeorgeEdison no

infact

I prefer you don't

Stefano Palazzo

@GeorgeEdison Qt doesn't have an embedded web-server does it?

Jacob

so I don't have to use a IP just for your app

as I have a limited number

George Edison

@StefanoPalazzo Not natively... but don't forget that I wrote JetHTTP :)

@Jacob Why is that?

Why do you need a separate IP address to run an HTTP server?

Jacob

21:33

@GeorgeEdison unless you don't mind running on a nonstandard port?

George Edison

@Jacob That's fine.

Jacob

ok

George Edison

That's kind of what I had in mind actually.

What port would work well?

Stefano Palazzo

yeah any port will do (or ports)

George Edison

I had an idea.

Maybe my app should listen on two consecutive ports (like 9015 and 9016, for example).

...and respond to HTTP requests on one and raw requests on the other.

Stefano Palazzo

21:36

If you can write a small, like 10 line function in python, php, ruby, java, that takes care of abstracting it, I guess every app developer is going to be happy

I only use http because I had the server handy, it makes no difference to the speed of it (in my case)

George Edison

Except HTTP adds some data to the request.

Stefano Palazzo

right, that's just measured performance, not sure what difference the amount of data makes

George Edison

Normally it would be trivial.

But with so many requests, I wonder if it will make a difference.

@Jacob: So what platform am I targetting?

(So I know how to begin packaging it.)

Jacob

@GeorgeEdison Sorry, but I'd like it to run on Windoze please

:)

George Edison

@Jacob Okay.

I'll have to switch to Vista then.

I'll be back here in about 5 minutes or so.

Stefano Palazzo

21:42

has never compiled, or even run, python on windows

never mind python 3000

k I need to be off in a few minutes

I'll see you around @Jacob?

Jacob

@StefanoPalazzo Later!

Stefano Palazzo

good good :) bye @Jacon, @GeorgeEdison

George Edison

I'm back now.

Vista sure is slow :P

At least I have a handy little second screen here.

Hang on... my mouse batteries died.

Ah, there we go.

@Jacob: So I'm bringing up Qt Creator now.

Jacob

22:00

@GeorgeEdison Awesome

George Edison

It's running... so far so good.

Jacob

Awesomer

George Edison

22:17

Seems to work alright.

Jacob

cool

George Edison

Are we ready to try it out?

Jacob

Sure

George Edison

I'm in the process of uploading a ZIP file to my hosting account.

Jacob

@GeorgeEdison ok

George Edison

22:24

I'll give you the link once it's done.

Alvar

A good one!

0

Q: Ubuntu 10.04 to 11.04

I have a Dell Vostro V130 Laptop that runs Ubuntu 10.04 and I was wondering how can I upgrade to 11.04? Can you walk me through the steps please?? Thank you for your help

upgrade

George Edison

@Jacob: files.quickmediasolutions.com/audataserver/AUDataServer.zip

If it's okay with you, I can set up another DNS A record for this app.

Jacob

Ok

George Edison

What IP should I point it to?

Jacob

umm 96.248.216.60

George Edison

22:33

K. The domain is 'audata.quickmediasolutions.com'

Jacob

@GeorgeEdison ok

@Josh that was fast

Josh

@Jacob I was summoned here...

George Edison

@Josh Hey.

Josh

Hey @GeorgeEdison, how goes?

is @Jacob treating you well? :-)

George Edison

@Josh Yup. Just fine.

Josh

22:35

I've been far too busy with moving to do much with hosting, so I'm glad he was able to take care of that!

@Jacob So what's this app I was summoned here to see? audata.quickmediasolutions.com?

Jacob

Hey

wrong IP

stick with .59 please

but

George Edison

Okay.

I fixed it now.

Jacob

Its command line right, can you add a readkey so the prompt doesn't disappear?

George Edison

...a readkey?

Jacob

Yeah, so the prompt doesn't disappear until I hit a key, I like that so I know the app is running

George Edison

22:48

Hmmm.... I'm not sure I quite understand yet :)

You want it to wait for input?

Jacob

@GeorgeEdison Nevermind then

George Edison

I'd like to implement whatever-it-is... I just don't know what it is.

Jacob

@GeorgeEdison yeah, your waiting for input then :)

oh

what port needs to be open?

George Edison

12345

But I can gladly change that.

If that port works, would it be possible to get the port above it opened too?

(12346?)

Jacob

that works

George Edison

22:52

I'm planning to have the server listen on the second port too - it'll respond to HTTP requests.

Jacob

@GeorgeEdison ok

set

I'd test but I'm not on ubuntu sorry

George Edison

Hmmm...

> "Connecting To 96.248.216.59...Could not open connection to the host, on port 12345: Connect failed"

I got that from telnet.

Jacob

@GeorgeEdison hmm

I just started it

It looks like it crashes at start

I never see it in task manager

George Edison

Hmmm.

Oh silly me!!!

I just remembered...

...it needs to be started with 'posts.xml' as an argument.

Sorry. My fault.

Jacob

23:11

@GeorgeEdison hmm

example then?

hehe

George Edison

audataserver posts.xml

Like that?

Jacob

jiust -posts.xml/

George Edison

Just posts.xml

Jacob

"C:\Documents and Settings\Administrator\Desktop\audata\audataserver.exe" -posts.xml

George Edison

Well, it doesn't need the dash.

Jacob

23:15

AWEEEYEAH

George Edison

It's... working!

Thank you!

Jacob

Np

how are you testing?

George Edison

Well, Chrome accepts raw data it seems.

So I'm just doing http://96.248.216.59:12345/

...and it gives an empty response.

(Which is what it's supposed to do.)

I'm trying to think of a way I can update this without bothering you every time...

Unlike Linux, I don't think Windows lets you update a file that's running.

Jacob

@GeorgeEdison nope

George Edison

So I'd need a way to stop the server, copy the new exec, and start it again.

Jacob

23:20

Batch script

George Edison

Hmmm... that sounds good.

I could set up my hosting account to have the newest version of the exec.

How would I run the script though?

Jacob

I'd set it to run every week or so?

Well

TBH

George Edison

Maybe every couple days at first?

Jacob

I'll setup you an account

on my server '

George Edison

Really? Well, thanks.

Jacob

23:30

NP

I get to in a few though

kinda busy at this second

George Edison

Me too :)

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