Consider changing the defaults between IIS Express vs Kestrel in VS
mkArtakMSFT opened this issue · 15 comments
- Calculate cost of IIS Express for both Debug and Release, F5 vs CTRL F5, for startup time.
- Figure out feature differences between them.
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| Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 | Average (ms) | Std Deviation- Sample (ms) | |
|---|---|---|---|---|---|---|---|
| IIS Express- F5 | 4488.525 | 4233.031 | 4157.722 | 4640.92 | 4275.969 | 4359.23336 | 199.7063997 |
| Kestrel- F5 | 3491.112 | 3009.8 | 1628.884 | 2835.401 | 2892.896 | 2771.61864 | 689.0245524 |
| IIS Express- Ctrl+F5 | 2077.545 | 1961.494 | 1964.514 | 1958.454 | 2030.64 | 1998.52938 | 53.40726911 |
| Kestrel- Ctrl+F5 | 726.3475 | 718.6789 | 730.5764 | 729.79 | 729.2783 | 726.93422 | 4.883907612 |
Calculated using https://github.com/shirhatti/processaudit
IIS Express- F5
Process/Start 2021-01-05T19:47:06.4792562-08:00 iisexpress
HostStart/Start 2021-01-05T19:47:10.8586257-08:00 iisexpress
RequestStart/Start 2021-01-05T19:47:10.9677814-08:00 iisexpress
Process/Start 2021-01-05T19:47:14.3839239-08:00 iisexpress
HostStart/Start 2021-01-05T19:47:18.4926723-08:00 iisexpress
RequestStart/Start 2021-01-05T19:47:18.6169548-08:00 iisexpress
Process/Start 2021-01-05T19:47:22.4438476-08:00 iisexpress
HostStart/Start 2021-01-05T19:47:26.4770368-08:00 iisexpress
RequestStart/Start 2021-01-05T19:47:26.6015692-08:00 iisexpress
Process/Start 2021-01-05T19:47:32.4910626-08:00 iisexpress
HostStart/Start 2021-01-05T19:47:37.0121454-08:00 iisexpress
RequestStart/Start 2021-01-05T19:47:37.1319824-08:00 iisexpress
Process/Start 2021-01-05T19:47:40.6837155-08:00 iisexpress
HostStart/Start 2021-01-05T19:47:44.8214682-08:00 iisexpress
RequestStart/Start 2021-01-05T19:47:44.9596848-08:00 iisexpress
4488.5252,4233.0309,4157.7216,4640.9198,4275.9693
IIS Express- Ctrl+F5
Process/Start 2021-01-05T19:49:28.4908748-08:00 iisexpress
HostStart/Start 2021-01-05T19:49:30.5417439-08:00 iisexpress
RequestStart/Start 2021-01-05T19:49:30.5684200-08:00 iisexpress
Process/Start 2021-01-05T19:49:37.6048547-08:00 iisexpress
HostStart/Start 2021-01-05T19:49:39.5464717-08:00 iisexpress
RequestStart/Start 2021-01-05T19:49:39.5663488-08:00 iisexpress
Process/Start 2021-01-05T19:49:45.5071357-08:00 iisexpress
HostStart/Start 2021-01-05T19:49:47.4533663-08:00 iisexpress
RequestStart/Start 2021-01-05T19:49:47.4716496-08:00 iisexpress
Process/Start 2021-01-05T19:49:50.8130059-08:00 iisexpress
HostStart/Start 2021-01-05T19:49:52.7516877-08:00 iisexpress
RequestStart/Start 2021-01-05T19:49:52.7714594-08:00 iisexpress
Process/Start 2021-01-05T19:49:57.2708380-08:00 iisexpress
HostStart/Start 2021-01-05T19:49:59.2827210-08:00 iisexpress
RequestStart/Start 2021-01-05T19:49:59.3014782-08:00 iisexpress
2077.5452,1961.4941,1964.5139,1958.4535,2030.6402
Kestrel- F5
Process/Start 2021-01-05T19:52:00.1557415-08:00 Timings
HostStart/Start 2021-01-05T19:52:02.0314622-08:00 Timings
RequestStart/Start 2021-01-05T19:52:03.6468534-08:00 Timings
Process/Start 2021-01-05T19:52:13.6975968-08:00 Timings
HostStart/Start 2021-01-05T19:52:15.2602723-08:00 Timings
RequestStart/Start 2021-01-05T19:52:16.7073969-08:00 Timings
Process/Start 2021-01-05T19:52:19.1274063-08:00 Timings
HostStart/Start 2021-01-05T19:52:20.4249394-08:00 Timings
RequestStart/Start 2021-01-05T19:52:20.7562905-08:00 Timings
Process/Start 2021-01-05T19:52:23.1473057-08:00 Timings
HostStart/Start 2021-01-05T19:52:24.2801725-08:00 Timings
RequestStart/Start 2021-01-05T19:52:25.9827068-08:00 Timings
Process/Start 2021-01-05T19:52:28.1533240-08:00 Timings
HostStart/Start 2021-01-05T19:52:29.4302469-08:00 Timings
RequestStart/Start 2021-01-05T19:52:31.0462199-08:00 Timings
3491.1119,3009.8001,1628.8842,2835.4011,2892.8959
Kestrel- Ctrl+F5
Process/Start 2021-01-05T19:50:32.0470546-08:00 Timings
HostStart/Start 2021-01-05T19:50:32.2286960-08:00 Timings
RequestStart/Start 2021-01-05T19:50:32.7734021-08:00 Timings
Process/Start 2021-01-05T19:50:35.3528319-08:00 Timings
HostStart/Start 2021-01-05T19:50:35.5134593-08:00 Timings
RequestStart/Start 2021-01-05T19:50:36.0715108-08:00 Timings
Process/Start 2021-01-05T19:50:39.5221784-08:00 Timings
HostStart/Start 2021-01-05T19:50:39.6840005-08:00 Timings
RequestStart/Start 2021-01-05T19:50:40.2527548-08:00 Timings
Process/Start 2021-01-05T19:50:43.3084716-08:00 Timings
HostStart/Start 2021-01-05T19:50:43.4686276-08:00 Timings
RequestStart/Start 2021-01-05T19:50:44.0382616-08:00 Timings
Process/Start 2021-01-05T19:50:46.9270852-08:00 Timings
HostStart/Start 2021-01-05T19:50:47.0872181-08:00 Timings
RequestStart/Start 2021-01-05T19:50:47.6563635-08:00 Timings
726.3475,718.6789,730.5764,729.79,729.2783
@shirhatti I'm a little concerned that the Kestrel F5 scenarios aren't including the time for .NET starting, as you are looking for host start as the event to start timing here: https://github.com/shirhatti/ProcessAudit/blob/main/Program.cs#L37.
Nvrm, apparently I needed to modify the process audit example to have the right app name for the Kestrel F5 scenario. My bad!
I ran a twitter poll around IIS Express VS Kestrel, and overwhelmingly it leaned to making Kestrel the default. https://twitter.com/JustinKotalik/status/1352314886810812417.
We met with @vijayrkn and @sayedihashimi and it sounds like we will reach out to @BillHiebert in March to see if he has capacity to implement this in VS.
#27463 for details on one feature we'd add to VS.
Besides that, I believe all of the other required work is switching the templates to have Kestrel first.
I don't think any template change will impact this, launchSettings.json isn't a part of the template. It is auto generated by Visual Studio.
It may be part of the websdk then. When you run dotnet new web on command line, a launchsettings.json is generated.
@jkotalik ok, maybe things have changed. Bill will know what the correct steps are when we meet with him.
@sayedihashimi launchsettings.json is defined in the templates, the first entry becomes the default. @phenning to confirm
Need to follow up with web tool folks to figure out any other places we generate or implicitly create a launchsettings.json file.
@BillHiebert Don't we also generate a launchsettings.json from the project system if the template does not already have one?
It looks like you guys already have the template change here:
https://github.com/dotnet/aspnetcore/blob/main/src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Properties/launchSettings.json
Yeah, the previous PR I just merged handled the templates. I filed an issue in the web tools azdo repo for generation of launchsettings.json
I think this is done on our side.