Spotter shortcut reset

Ben

How did you do it?
I downloaded the latest version

By "latest version" do you mean direct download of Pharo 8.0

I don't have Pharo 8.0 listed in my Pharo Launcher.

I am getting network errors trying to download latest Pharo Launcher, 

so I created a fresh Pharo 7.0.1 and Spotter works fine out of the box.

Then I used Iceberg to update to Pharo 8.0, this breaks Spotter.

Certainly not the recommended way, but its all I got at the moment to get into Pharo 8.0 development.

cheers -ben

 

and Spotter worked well (>I broke it but loading old code from Pharo 60).

Stef

> On 2 Feb 2019, at 10:25, Ben Coman <[hidden email]> wrote:
>
> I upgraded Pharo 7.0.1 to latest Pharo 8.0 branch.
> Now when I hit <Ctrl-Enter> I get a debugger...
>      Instance of AnObsoleteGTSpotterGlobalShortcut class did not understand #openGlobalSpotter
>
> Although not a certified way to upgrade, its maybe useful.
> I've looked through settings and class-side methods for some way to reset this.
> Is there some class reset or initialization that can be run to clear this up?
>
> cheers -ben

On 3 Feb 2019, at 12:06, Ben Coman <[hidden email]> wrote:

On Sat, 2 Feb 2019 at 18:54, ducasse <[hidden email]> wrote:
> On Sat, 2 Feb 2019 at 11:01, Ben Coman <[hidden email]> wrote:  
>
> > I am getting network errors trying to download latest Pharo Launcher,
>
> can you tell me how so that I try to reproduce it?

Since network performance depends a lot on location, and presuming you'd 

need to be at my house to reproduce my experience, 

I spent the afternoon learning about AWS so I could do some testing from a Australian based cloud box

that you should be able to reproduce fairly easily, since this was my first time using AWS.

With this 10 minute tutorial...

[Launch a Linux Virtual Machine](https://aws.amazon.com/getting-started/tutorials/launch-a-virtual-machine/)
1. Signed up and signed in
Tip: I struggled a long while looping on "Sign in with root account credentials" until I discovered I needed to use the email address I signed up with, not the account name.

[Edit:] In the top right between account name and support,
pulled down list and selected "Asia Pacfic (Sydney)"


2. Clicked "Launch a virtual machine"    
(note, that only seems to show up for blank account, otherwise its "Launch Instance"


3. Ticked "Free tier only" filter.
+ Selected "Amazon Linux 2 AMI (HVM), SSD Volume Type"   
+ Clicked <Review and Launch>  (used default t2.micro)
+ Clicked <Launch>
+ From the pull-down selected "Create a new key pair",
gave it a name and clicked <Download Keypair> saved as "SydneyPharoSpeedTest.pem"
+ Clicked <Launch Instance>
+ Clicked <View Instances>
noted instance...
* IP address: 54.252.136.78
* Zone: ap-southeast-2b
* Security Group: Launch Wizard 1

4. On my Windows 10 box, in WSL did... 
$ cd ~/.ssh       # if it doesn't exist, first do...   mkdir -m 700 ~/.ssh
$ cp /mnt/c/Users/Ben/Downloads/SydneyPharoSpeedTest.pem   ~/.ssh
$ chmod 400 ~/.ssh/SydneyPharoSpeedTest.pem
$ ssh -i ~/.ssh/SydneyPharoSpeedTest.pem  [hidden email]$ cat /etc/os-release

ID="amzn"

ID_LIKE="centos rhel fedora"

GOOD NETWORK BASELINE TEST...
Ignoring any packet loss on poor networks, first testing low bandwidths on a good network

$ vi test.sh

#!/bin/sh
if [ -d out ]; then
    dirdate=`stat -c %z out | awk '{print $1"-"$2}' `
    mv out out.${dirdate}
fi
mkdir out
for RATE in 1000k 500k 200k 100k 50k 20k 10k 5k 2k 1k
do
  echo $RATE
  /usr/bin/time -f "%e" -o out/time.$RATE \
       wget --quiet --limit-rate $RATE https://files.pharo.org/pharo-launcher/1.6/pharo-launcher-1.6.msi -O out/file.$RATE &
done

$ sh test.sh
monitoring with...
$ cat out/time* | sort -n
$ ls -lS out

results in following table and graphs...

$RATE (kb/s)	TIME (s)	TIME (min)	TIME (hr)
1000	54	1	0.0
500	105	2	0.0
200	259	4	0.1
100	515	9	0.1
50	1029	17	0.3
20	2576	43	0.7
10	5149	86	1.4
5	10527	175	2.9

<download-speed.png>

Wow that surprised me.  I'm not sure what the behaviour of file servers at low bandwidth should be,

but intuitively the above seems odd.  In the past troubleshooting seems to have been 

focused on the cause of slow speeds, but these can occur for many reasons unrelated to the 

the file server.  The above test ignores cause to isolate behaviour at slow speeds.

I forgot my own download speed yesterday (today is okay), but here is another sample...

"(in Argentina) it is really slow ... 3.5KB/s ... average 10KB/s".

http://forum.world.st/Pharo-Downloads-are-sluggish-td5084963.html  

I would hope that download time was near linear with speed all the way down to 1kb/s. 

Anyone have some sysadmins they can lean on to understand if that is realistic?

The straightness of the line using a log-log axis makes it seem like policy rather than physics.

<download-speed(log).png>

HTH,

cheers -ben

On 3 Feb 2019, at 12:06, Ben Coman <[hidden email]> wrote:

On Sat, 2 Feb 2019 at 18:54, ducasse <[hidden email]> wrote:
> On Sat, 2 Feb 2019 at 11:01, Ben Coman <[hidden email]> wrote:  
>
> > I am getting network errors trying to download latest Pharo Launcher,
>
> can you tell me how so that I try to reproduce it?

Since network performance depends a lot on location, and presuming you'd 

need to be at my house to reproduce my experience, 

I spent the afternoon learning about AWS so I could do some testing from a Australian based cloud box

that you should be able to reproduce fairly easily, since this was my first time using AWS.

With this 10 minute tutorial...

[Launch a Linux Virtual Machine](https://aws.amazon.com/getting-started/tutorials/launch-a-virtual-machine/)
1. Signed up and signed in
Tip: I struggled a long while looping on "Sign in with root account credentials" until I discovered I needed to use the email address I signed up with, not the account name.

[Edit:] In the top right between account name and support,
pulled down list and selected "Asia Pacfic (Sydney)"


2. Clicked "Launch a virtual machine"    
(note, that only seems to show up for blank account, otherwise its "Launch Instance"


3. Ticked "Free tier only" filter.
+ Selected "Amazon Linux 2 AMI (HVM), SSD Volume Type"   
+ Clicked <Review and Launch>  (used default t2.micro)
+ Clicked <Launch>
+ From the pull-down selected "Create a new key pair",
gave it a name and clicked <Download Keypair> saved as "SydneyPharoSpeedTest.pem"
+ Clicked <Launch Instance>
+ Clicked <View Instances>
noted instance...
* IP address: 54.252.136.78
* Zone: ap-southeast-2b
* Security Group: Launch Wizard 1

4. On my Windows 10 box, in WSL did... 
$ cd ~/.ssh       # if it doesn't exist, first do...   mkdir -m 700 ~/.ssh
$ cp /mnt/c/Users/Ben/Downloads/SydneyPharoSpeedTest.pem   ~/.ssh
$ chmod 400 ~/.ssh/SydneyPharoSpeedTest.pem
$ ssh -i ~/.ssh/SydneyPharoSpeedTest.pem  [hidden email]$ cat /etc/os-release

ID="amzn"

ID_LIKE="centos rhel fedora"

GOOD NETWORK BASELINE TEST...
Ignoring any packet loss on poor networks, first testing low bandwidths on a good network

$ vi test.sh

#!/bin/sh
if [ -d out ]; then
    dirdate=`stat -c %z out | awk '{print $1"-"$2}' `
    mv out out.${dirdate}
fi
mkdir out
for RATE in 1000k 500k 200k 100k 50k 20k 10k 5k 2k 1k
do
  echo $RATE
  /usr/bin/time -f "%e" -o out/time.$RATE \
       wget --quiet --limit-rate $RATE https://files.pharo.org/pharo-launcher/1.6/pharo-launcher-1.6.msi -O out/file.$RATE &
done

$ sh test.sh
monitoring with...
$ cat out/time* | sort -n
$ ls -lS out

results in following table and graphs...

$RATE (kb/s)	TIME (s)	TIME (min)	TIME (hr)
1000	54	1	0.0
500	105	2	0.0
200	259	4	0.1
100	515	9	0.1
50	1029	17	0.3
20	2576	43	0.7
10	5149	86	1.4
5	10527	175	2.9

<download-speed.png>

Wow that surprised me.  I'm not sure what the behaviour of file servers at low bandwidth should be,

but intuitively the above seems odd.  In the past troubleshooting seems to have been 

focused on the cause of slow speeds, but these can occur for many reasons unrelated to the 

the file server.  The above test ignores cause to isolate behaviour at slow speeds.

I forgot my own download speed yesterday (today is okay), but here is another sample...

"(in Argentina) it is really slow ... 3.5KB/s ... average 10KB/s".

http://forum.world.st/Pharo-Downloads-are-sluggish-td5084963.html  

I would hope that download time was near linear with speed all the way down to 1kb/s. 

Anyone have some sysadmins they can lean on to understand if that is realistic?

The straightness of the line using a log-log axis makes it seem like policy rather than physics.

<download-speed(log).png>

HTH,

cheers -ben