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Peter (Peter Hedenskog)
Software Engineer, Wikimedia Foundation

Projects (6)

Today

  • Clear sailing ahead.

Tomorrow

  • Clear sailing ahead.

Wednesday

  • Clear sailing ahead.

User Details

User Since
Aug 17 2015, 6:48 PM (191 w, 6 d)
Availability
Available
IRC Nick
phedenskog
LDAP User
Unknown
MediaWiki User
PHedenskog (WMF) [ Global Accounts ]

Recent Activity

Mon, Apr 15

Peter moved T220796: Chrome 73 introduced higher deviation in metrics from Inbox to Doing on the Performance-Team board.
Mon, Apr 15, 7:59 PM · WebPageReplay, Performance-Team
Peter added a comment to T192050: Use Docker version of WebPageTest agents.

I continued to test and added the --init to get the rid of the zombie processes. That worked, but after 24 h (or so) Firefox started to fail again. I have reverted back to the old agent and hope to get some attention upstream.

Mon, Apr 15, 5:03 PM · Upstream, WebPageTest, Performance-Team
Peter updated the task description for T192050: Use Docker version of WebPageTest agents.
Mon, Apr 15, 5:01 PM · Upstream, WebPageTest, Performance-Team

Sun, Apr 14

Peter added a comment to T220796: Chrome 73 introduced higher deviation in metrics.

It looks that 74 gives less variation (but probably not as 72):

Sun, Apr 14, 1:02 PM · WebPageReplay, Performance-Team

Sat, Apr 13

Tgr awarded Blog Post: Evaluating Element Timing for Images a Like token.
Sat, Apr 13, 11:19 PM

Fri, Apr 12

Peter added a comment to T192050: Use Docker version of WebPageTest agents.

Ok Firefox worked when I started the container but something happens and now it looks like this again:

Fri, Apr 12, 12:13 PM · Upstream, WebPageTest, Performance-Team
Peter added a comment to T220796: Chrome 73 introduced higher deviation in metrics.

Also enabled 74 for enwiki. I think it looks better on variation but maybe some URLs are slower. Need to run it through the weekend and see what it looks like.

Fri, Apr 12, 12:11 PM · WebPageReplay, Performance-Team
Peter added a comment to T220796: Chrome 73 introduced higher deviation in metrics.

No it was not across all wikis. Testing 74 now on German, Spanish, Japanese, Chinese and Russian Wikipedia

Fri, Apr 12, 10:08 AM · WebPageReplay, Performance-Team
Peter added a comment to T220796: Chrome 73 introduced higher deviation in metrics.

No change for Firefox at the same moment, that indicates that there's no change in the Browsertime side, rather a Chrome problem. I'll try out a beta of 74 and see if something changes.

Fri, Apr 12, 9:45 AM · WebPageReplay, Performance-Team
Peter created T220796: Chrome 73 introduced higher deviation in metrics.
Fri, Apr 12, 9:38 AM · WebPageReplay, Performance-Team
Peter added a comment to T192050: Use Docker version of WebPageTest agents.

I went through all the tests I ran before on the Dockerized version and then the Firefox tests worked: http://wpt.wmftest.org/result/190403_4N_CA/

Fri, Apr 12, 5:00 AM · Upstream, WebPageTest, Performance-Team

Thu, Apr 11

Krinkle awarded Blog Post: Evaluating Element Timing for Images a Love token.
Thu, Apr 11, 12:01 AM

Wed, Apr 10

Peter added a comment to T192050: Use Docker version of WebPageTest agents.

I like logs but the logs for WPT is really heard to follow. Here's a snippet from the container:

Wed, Apr 10, 8:47 AM · Upstream, WebPageTest, Performance-Team
Peter published Blog Post: Evaluating Element Timing for Images.
Wed, Apr 10, 8:24 AM
Peter added a project to T192050: Use Docker version of WebPageTest agents: Upstream.

Created an upstream issue asking for help: https://github.com/WPO-Foundation/wptagent/issues/253

Wed, Apr 10, 7:37 AM · Upstream, WebPageTest, Performance-Team
Peter added a comment to T192050: Use Docker version of WebPageTest agents.

We have some problems on the new instance:

Wed, Apr 10, 7:03 AM · Upstream, WebPageTest, Performance-Team

Tue, Apr 9

Peter closed T217533: Create runbook for WebPageTest as Resolved.

Updated how to create a new container and how to deploy it.

Tue, Apr 9, 8:47 AM · WebPageTest, Performance-Team
Peter added a comment to T192050: Use Docker version of WebPageTest agents.

I enabled the alerts on AWS, everything looks good so far except that the used disk space increased by 6% since yesterday, that needs to be fixed.

Tue, Apr 9, 8:27 AM · Upstream, WebPageTest, Performance-Team
Peter added a comment to T216598: Element Timing for Images origin trial.

Let do the blog post tomorrow.

Tue, Apr 9, 8:12 AM · Patch-For-Review, MW-1.33-notes (1.33.0-wmf.23; 2019-03-26), Performance-Team
Peter added a comment to T220109: Add probe/report for Long Task information.

Hmm I think the ScriptDuration is reported in seconds? Yes that much be it.

Tue, Apr 9, 5:53 AM · Performance-Team, Fresnel

Mon, Apr 8

Peter added a comment to T192050: Use Docker version of WebPageTest agents.

It is deployed and the tests are running. For Desktop it looks like this (the red line is when I did the switch):

Mon, Apr 8, 11:38 AM · Upstream, WebPageTest, Performance-Team

Sun, Apr 7

Peter added a comment to T220109: Add probe/report for Long Task information.

I'm testing https://chromedevtools.github.io/devtools-protocol/tot/Performance to get performance metrics at the moment on my local machine and for the Barack Obama page and the time spent running JS looks like this (headless in Chrome using Fresnel):
ScriptDuration: 0.413074

Sun, Apr 7, 5:10 PM · Performance-Team, Fresnel

Wed, Apr 3

Peter added a comment to T192050: Use Docker version of WebPageTest agents.

This is the list so I remember everything when we do the switch:

  1. Deploy a new AWS server and update it
  2. Install Docker
  3. Stop the current agent at AWS (but keep it until we see everything works ok)
  4. Remove the current Docker test setup from location.ini
  5. Turn off auto updates in settings.ini on the WebPageTest server
  6. Start the Docker agent
  7. Setup alerts in AWS for the new server
  8. Verify that the documentation reflects what I did
Wed, Apr 3, 9:59 AM · Upstream, WebPageTest, Performance-Team
Peter added a comment to T192050: Use Docker version of WebPageTest agents.

I finally got a version up and running on AWS. I've updated the documentation and need to add Docker agent section I will finish that today, and then I think we should make the switch on Monday (then I can also mention it at todays SoS so reading knows before IF there will be any changes to metrics.

Wed, Apr 3, 9:18 AM · Upstream, WebPageTest, Performance-Team

Tue, Apr 2

Peter moved T192050: Use Docker version of WebPageTest agents from Backlog: Future Goals to Doing on the Performance-Team board.
Tue, Apr 2, 8:40 AM · Upstream, WebPageTest, Performance-Team
Peter closed T216571: Write runbook about releasing/deploying Fresnel as Resolved.

This worked fine yesterday so let us close it!

Tue, Apr 2, 8:22 AM · Performance-Team, Fresnel

Mon, Apr 1

Peter moved T195233: Blog post: Explain how we use Browsertime/WebPageReplay/WebPageTest from Backlog: Small & Maintenance to Doing on the Performance-Team board.
Mon, Apr 1, 10:12 AM · WebPageReplay, WebPageTest, Performance-Team
Peter renamed T195233: Blog post: Explain how we use Browsertime/WebPageReplay/WebPageTest from Blog post: Explain how we use Browsertime/WebPageReplay to Blog post: Explain how we use Browsertime/WebPageReplay/WebPageTest.
Mon, Apr 1, 10:11 AM · WebPageReplay, WebPageTest, Performance-Team
Peter moved T213398: Move performance team dashboards to /performance/ folder in Grafana from Doing to Backlog: Small & Maintenance on the Performance-Team board.
Mon, Apr 1, 10:09 AM · Performance-Team
Peter reassigned T213398: Move performance team dashboards to /performance/ folder in Grafana from Peter to Krinkle.

I've moved the dashboards for WebPageTest and WebPageReplay to performance. Signing over you @Krinkle and you can choose how wanna do with the ones for Navtiming.

Mon, Apr 1, 10:08 AM · Performance-Team
Peter closed T185446: Create static version of wiki page as reference page for our tests as Resolved.
Mon, Apr 1, 10:06 AM · WebPageTest, Performance-Team
Peter added a comment to T185446: Create static version of wiki page as reference page for our tests.

Added it to both WebPageTest and WebPageReplay, they are under static:
https://grafana.wikimedia.org/d/000000572/webpagereplay-drilldown?orgId=1&var-wiki=static&var-device=desktop&var-browser=chrome&var-latency=100&var-page=Banksy

Mon, Apr 1, 10:05 AM · WebPageTest, Performance-Team
Peter changed the status of T217771: Remove (or fix) noisy Speed Index alerts from Open to Stalled.

This is waiting on getting banners on the WebPageReplay tests so I can add the correct alert + verify that it works.

Mon, Apr 1, 10:02 AM · WebPageTest, WebPageReplay, Performance-Team
Peter closed T218786: Upgrade (and do annotation) for Chrome 73 and Firefox 66 in our testing as Resolved.

For Chrome we could see different behavior but nothing concistent. I've added annotations on all places so if we see something in RUM we can go back to the synthetic.

Mon, Apr 1, 10:01 AM · Performance-Team, WebPageTest, WebPageReplay
Peter closed T218071: Update the WebPageTest wrapper to use the latest dependencies as Resolved.

This was done last week.

Mon, Apr 1, 10:00 AM · WebPageTest, Performance-Team
Peter closed T219231: Collect element timings for RU wiki as Resolved.

I've tested a couple of URLs locally instead. 11 runs for each URL:

Mon, Apr 1, 8:58 AM · WebPageTest, Performance-Team

Thu, Mar 28

Peter added a comment to T185446: Create static version of wiki page as reference page for our tests.

Cool thanks @Krinkle !

Thu, Mar 28, 1:48 PM · WebPageTest, Performance-Team
Peter created T219496: [Meta] Next level of synthetic testing.
Thu, Mar 28, 11:44 AM · Performance-Team
Peter created T219495: Automate finding forced layouts.
Thu, Mar 28, 11:03 AM · Patch-For-Review, Fresnel, WebPageReplay, Performance-Team

Tue, Mar 26

Peter closed T219220: Remove visual elements hack on the WebPageTest server as Resolved.

Updated.

Tue, Mar 26, 8:44 AM · WebPageTest, Performance-Team

Mon, Mar 25

Peter moved T210046: Integrate https://chromedevtools.github.io/timeline-viewer/ to our trace logs from Doing to Backlog: Small & Maintenance on the Performance-Team board.
Mon, Mar 25, 9:34 PM · WebPageReplay, Performance-Team
Peter moved T214026: Create a list of what's needed for getting the mobile phone performance lab running from Doing to Backlog: Small & Maintenance on the Performance-Team board.
Mon, Mar 25, 9:33 PM · Performance-Team
Peter moved T215489: [Investigate] Measure time spent as a logged in user from different locations from Doing to Backlog: Small & Maintenance on the Performance-Team board.
Mon, Mar 25, 9:33 PM · Performance-Team
Peter moved T219231: Collect element timings for RU wiki from Inbox to Backlog: Small & Maintenance on the Performance-Team board.
Mon, Mar 25, 8:48 PM · WebPageTest, Performance-Team
Peter moved T219220: Remove visual elements hack on the WebPageTest server from Inbox to Backlog: Small & Maintenance on the Performance-Team board.
Mon, Mar 25, 8:47 PM · WebPageTest, Performance-Team
Peter moved T218786: Upgrade (and do annotation) for Chrome 73 and Firefox 66 in our testing from Inbox to Doing on the Performance-Team board.
Mon, Mar 25, 8:44 PM · Performance-Team, WebPageTest, WebPageReplay
Peter claimed T219220: Remove visual elements hack on the WebPageTest server.
Mon, Mar 25, 8:44 PM · WebPageTest, Performance-Team
Peter created T219231: Collect element timings for RU wiki.
Mon, Mar 25, 8:44 PM · WebPageTest, Performance-Team
Peter created T219220: Remove visual elements hack on the WebPageTest server.
Mon, Mar 25, 7:43 PM · WebPageTest, Performance-Team

Mar 22 2019

Peter added a comment to T218786: Upgrade (and do annotation) for Chrome 73 and Firefox 66 in our testing.

The current run on WebPageTest got Firefox 66 so I marked an annotation. However we don't graph navigation timing data (or collect it by default) so I think we need to compare individually runs.

Mar 22 2019, 7:44 AM · Performance-Team, WebPageTest, WebPageReplay

Mar 21 2019

Peter added a comment to T218618: Consider disabling Chrome Lite pages for Wikipedia on Chrome on mobile with Cache-Control: no-transform.

@dr0ptp4kt in https://blog.chromium.org/2019/03/chrome-lite-pages-for-faster-leaner.html is says it supports the https://developers.google.com/web/updates/2018/09/reportingapi (adding a URL as a report header) but I haven't looked into it.

Mar 21 2019, 10:54 AM · Performance-Team (Radar), WMF-Legal, Security-Team, Privacy
Peter added a comment to T218786: Upgrade (and do annotation) for Chrome 73 and Firefox 66 in our testing.

Adding example HARs for 66 and 65.


Mar 21 2019, 9:13 AM · Performance-Team, WebPageTest, WebPageReplay
Peter added a comment to T218618: Consider disabling Chrome Lite pages for Wikipedia on Chrome on mobile with Cache-Control: no-transform.

For me it looks like this, the popup happens when I force 2g connections, so not sure when it happens for real users:

Mar 21 2019, 8:22 AM · Performance-Team (Radar), WMF-Legal, Security-Team, Privacy

Mar 20 2019

Peter created T218786: Upgrade (and do annotation) for Chrome 73 and Firefox 66 in our testing.
Mar 20 2019, 2:49 PM · Performance-Team, WebPageTest, WebPageReplay
Peter added a comment to T217771: Remove (or fix) noisy Speed Index alerts.

I've pushed a fix to fetch the User Timings, let it run for a an hour or two and I can start to add it to the test for group 1 that runs banners at the moment.

Mar 20 2019, 7:52 AM · WebPageTest, WebPageReplay, Performance-Team

Mar 19 2019

Peter triaged T217771: Remove (or fix) noisy Speed Index alerts as Normal priority.
Mar 19 2019, 3:00 PM · WebPageTest, WebPageReplay, Performance-Team
Peter added a comment to T217771: Remove (or fix) noisy Speed Index alerts.

I've added it for WebPageTest yesterday and will add it for WebPageReplay the next time we got banners (it will make it easier since we auto-magical pick up the User Timings).

Mar 19 2019, 3:00 PM · WebPageTest, WebPageReplay, Performance-Team
Peter closed T218202: Investigate how Chrome Lite Pages affects us as Resolved.

Closing since the privacy issues in T218618 is the most important ones. Also adding https://gist.github.com/soulgalore/430cee73ca2311e815b0fa824b5e0d2a that is a potential (but not working) way to automate to test Lite pages.

Mar 19 2019, 2:36 PM · Performance-Team
Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

Created T218618 about the privacy issue.

Mar 19 2019, 2:33 PM · Performance-Team

Mar 18 2019

Peter created T218618: Consider disabling Chrome Lite pages for Wikipedia on Chrome on mobile with Cache-Control: no-transform.
Mar 18 2019, 10:49 PM · Performance-Team (Radar), WMF-Legal, Security-Team, Privacy
Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

Hmm when I tested now from another location it actually works with the navigation/search see:

Mar 18 2019, 10:27 PM · Performance-Team
Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

Btw this reminds me of the problem we used to have with the Opera in proxy mode.

Mar 18 2019, 2:16 PM · Performance-Team
Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

Had a quick at trying to enable the lite pages by command line but it didn't work for me. Tried with

--data-reduction-proxy-lo-fi=always-on --enable-data-reduction-proxy-lite-page --force-effective-connection-type=2G
Mar 18 2019, 2:15 PM · Performance-Team
Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

Yes you are right @Krinkle they are not there. I haven't got around to hook up the phone to my computer yet, let me try that to see if I can see more what's actually is happening.

Mar 18 2019, 1:43 PM · Performance-Team

Mar 13 2019

Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

It looks like this:

Mar 13 2019, 1:51 PM · Performance-Team
Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

However the user can revert by pressing the "Lite"button in the URL bar. If I can find away to share my screenshot from my device ...

Mar 13 2019, 1:48 PM · Performance-Team
Peter updated subscribers of T218202: Investigate how Chrome Lite Pages affects us.

Adding @Jdlrobson since I think you will be interested in this.

Mar 13 2019, 1:07 PM · Performance-Team
Peter added a comment to T218202: Investigate how Chrome Lite Pages affects us.

Had a quick try on 73 beta (73 hasn't reached the play store yet for me). Enable data saver and setting 2g as network let me get the light version of Wikipedia (or one version, I guess it can be multiple versions). Most images are blocked (not all but all major images). Clicking on the them open the media viewer but you cannot see the image. It is also blocked in the Commons File page.

Mar 13 2019, 1:05 PM · Performance-Team
Peter created T218202: Investigate how Chrome Lite Pages affects us.
Mar 13 2019, 12:32 PM · Performance-Team
Peter updated subscribers of T217771: Remove (or fix) noisy Speed Index alerts.

I think the best way to know this is to use the User Timing mwCentralNoticeBanner that will always be there when we show it right @Gilles?

Mar 13 2019, 10:04 AM · WebPageTest, WebPageReplay, Performance-Team

Mar 12 2019

Peter moved T217732: Add documentation for setting up a new agent from Inbox to Backlog: Small & Maintenance on the Performance-Team board.
Mar 12 2019, 9:10 PM · Documentation, WebPageTest, Performance-Team
Peter moved T217771: Remove (or fix) noisy Speed Index alerts from Inbox to Backlog: Small & Maintenance on the Performance-Team board.
Mar 12 2019, 9:08 PM · WebPageTest, WebPageReplay, Performance-Team
Peter moved T218071: Update the WebPageTest wrapper to use the latest dependencies from Inbox to Doing on the Performance-Team board.
Mar 12 2019, 9:01 PM · WebPageTest, Performance-Team
Peter created T218071: Update the WebPageTest wrapper to use the latest dependencies.
Mar 12 2019, 5:51 AM · WebPageTest, Performance-Team

Mar 10 2019

Tgr awarded T133646: Run performance test on commits (Fresnel) a Love token.
Mar 10 2019, 6:00 AM · Performance-Team-notice, Fresnel, Performance-Team

Mar 7 2019

Peter closed T217729: Try out gnirehtet for reverse tethering as Resolved.

Tried and it was at least so stable so we can measure difference between a logged in user vs a user with a cold cache. I could confirm on a real phone that on a slow connection up:768 down:1600 rtt:150 the first paint happens faster for a logged in user than for a user with a cold cache.

Mar 7 2019, 2:55 PM · Performance-Team
Peter closed T217729: Try out gnirehtet for reverse tethering, a subtask of T197847: Collect performance metrics from a mobile over time, as Resolved.
Mar 7 2019, 2:55 PM · Performance-Team
Peter added a comment to T217729: Try out gnirehtet for reverse tethering.

I tried this today from my Mac. The rust version didn't work for me (I got https://github.com/Genymobile/gnirehtet/issues/136). Switching to the Java version worked fine.

Mar 7 2019, 1:44 PM · Performance-Team

Mar 6 2019

Peter created T217771: Remove (or fix) noisy Speed Index alerts.
Mar 6 2019, 2:12 PM · WebPageTest, WebPageReplay, Performance-Team
Peter created T217732: Add documentation for setting up a new agent.
Mar 6 2019, 8:20 AM · Documentation, WebPageTest, Performance-Team
Peter created T217729: Try out gnirehtet for reverse tethering.
Mar 6 2019, 8:16 AM · Performance-Team

Mar 5 2019

Peter closed T217659: Create tagged WPTAgent container as Resolved.
Mar 5 2019, 3:33 PM · WebPageTest, Performance-Team
Peter closed T217659: Create tagged WPTAgent container, a subtask of T192050: Use Docker version of WebPageTest agents, as Resolved.
Mar 5 2019, 3:33 PM · Upstream, WebPageTest, Performance-Team
Peter added a comment to T217659: Create tagged WPTAgent container.

Pushed it to https://cloud.docker.com/u/wikimedia/repository/docker/wikimedia/wptagent/general

Mar 5 2019, 3:32 PM · WebPageTest, Performance-Team
Peter added a comment to T217659: Create tagged WPTAgent container.

Let us start with:

Mar 5 2019, 3:08 PM · WebPageTest, Performance-Team
Peter added a comment to T217659: Create tagged WPTAgent container.

Adding how to get Chrome/Firefox versions:

Mar 5 2019, 2:47 PM · WebPageTest, Performance-Team
Peter changed the status of T192050: Use Docker version of WebPageTest agents from Stalled to Open.
Mar 5 2019, 2:44 PM · Upstream, WebPageTest, Performance-Team
Peter created T217659: Create tagged WPTAgent container.
Mar 5 2019, 2:35 PM · WebPageTest, Performance-Team

Mar 4 2019

Peter added a comment to T192050: Use Docker version of WebPageTest agents.

Since there are no changelong and really rare releases, I think the tag needs to include the build date + Chrome and Firefox version (and then we can add Edge (or what it will be called) version when it's available on Linux.

Mar 4 2019, 9:32 PM · Upstream, WebPageTest, Performance-Team
Peter moved T192050: Use Docker version of WebPageTest agents from Blocked to Backlog: Future Goals on the Performance-Team board.
Mar 4 2019, 9:30 PM · Upstream, WebPageTest, Performance-Team
Peter added a comment to T192050: Use Docker version of WebPageTest agents.

I think the way forward is to tag our own containers. Let me fix that.

Mar 4 2019, 9:29 PM · Upstream, WebPageTest, Performance-Team
Peter created T217536: Separate cold cache hits vs somehow warm cache hits in Navigation Timing metrics.
Mar 4 2019, 8:02 AM · Performance-Team
Peter created T217534: Create runbook for WebPageReplay.
Mar 4 2019, 7:51 AM · Performance-Team, WebPageReplay
Peter created T217533: Create runbook for WebPageTest.
Mar 4 2019, 7:50 AM · WebPageTest, Performance-Team
Peter created T217532: Collect Navigation Timing metrics from focus areas.
Mar 4 2019, 7:45 AM · Performance-Team
Peter added a comment to T217138: Add synthetic tests for ruwiki.

We do but only using WebPageReplay: https://grafana.wikimedia.org/d/000000431/webpagereplay?refresh=15m&orgId=1&var-wiki=ruwiki&var-device=desktop&var-browser=chrome&var-latency=100

Mar 4 2019, 7:01 AM · Performance-Team

Mar 1 2019

Peter added a comment to Blog Post: Choosing tools for continuous integration.

I like the approach Github has gone with the beta of Github actions. What I like about it, is how super easy it is to integrate whatever tool you need in the pipeline, as long as you have it as a Docker container and you set a couple of labels. I tried it with a couple of projects and it was amazing how easy it was to add new tools. However I understand there are other considerations too :)

Mar 1 2019, 11:01 AM
Peter added a comment to T216499: Priority Hints origin trial.

So then if I wanna try it out, it should just work if I compare 72 with 73 right? WebPageTest will just roll forward with 73 when it's available but we could run it manually with the current beta installed on the WPT server, just to get the different HAR files, that would be interesting.

Mar 1 2019, 7:48 AM · Patch-For-Review, MW-1.33-notes (1.33.0-wmf.25; 2019-04-09), Performance-Team

Feb 22 2019

Peter added a comment to T215489: [Investigate] Measure time spent as a logged in user from different locations.

To be clear, do you follow/render the redirect or just toss the response once you see the cookie headers? If it's the former, is the browser cache cleared after the main page or is it also not cleared?

Feb 22 2019, 8:41 PM · Performance-Team
Peter added a comment to T215489: [Investigate] Measure time spent as a logged in user from different locations.

I've started documenting at https://wikitech.wikimedia.org/wiki/Performance/Synthetic_Measurement_Experiment_2019 - I'll make sure I'll copy the full scripts by the end of the day and them too and then shutdown the instances and start to add graphs and summary when I'm back at work next Friday.

Feb 22 2019, 12:50 PM · Performance-Team