I just started using Jetpack Compose with AS Giraf...
# android-studiok
kevindmoore
04/18/2023, 10:43 PMI just started using Jetpack Compose with AS Giraffe. Why is preview so slow? Usually the Loading text goes on until I do a rebuild
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Chris Sinco [G]
04/19/2023, 11:35 AMHmm it should be definitely faster than previous versions. What version of Compose are you using?
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kevindmoore
04/19/2023, 2:40 PMBOM version 2023.03.00
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Chris Sinco [G]
04/19/2023, 2:45 PMAnd version of your compiler? Also what machine are you on? And has this just started happening?
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kevindmoore
04/19/2023, 2:51 PMCompiler is 1.3.2 and Giraffe 2022.3.1 Canary 11. Well, I just started Compose work last week. I'm on an M1 16" MacBook. Pretty beefy with 64G memory. Could be VPN? I just restarted machine
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Colton Idle
04/19/2023, 4:05 PMooh. Im also stuck on an old compiler version because i can't bump kotlin version past 1.7x
i wonder if this is the culprit of deathly slow previews.
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Chris Sinco [G]
04/19/2023, 4:12 PMHmm I’m on all the same versions and machine, so wonder if there’s something in the code itself, like the dependency complexity. With Fast Preview, it builds as minimal as possible, but it does still try to build transitive dependencies where needed, i.e. dependent Composables from user code.
Chris Sinco [G]
04/19/2023, 4:12 PMLet me check with the team to see if we have any benchmarks across Compose versions (including compiler)
Chris Sinco [G]
04/19/2023, 4:15 PMCould y’all also quantify what “slow” is? And are you seeing it just as slow on say really small projects comparatively?
Chris Sinco [G]
04/19/2023, 4:28 PMOn the compiler version, there is an internal one used for Fast Preview, so it shouldn’t have an impact necessarily
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kevindmoore
04/19/2023, 4:29 PMSo, the UI itself is pretty simple. Loading just spins until I do a rebuild. It's pretty much just easier to just rebuild and run the app. Preview is almost worthless
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Colton Idle
04/19/2023, 4:54 PMYeah, I'm doing simple stuff here. project is also simple. 2 modules.
Colton Idle
04/19/2023, 4:54 PM1 being the app. the other being a completely decoupled design system. thats where i use the preview annotations. and its still hella slow
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Chris Sinco [G]
04/19/2023, 5:12 PMWould it be possible for either of you to file a bug and attach your logs? This is unexpected from the team, so they would need to see the logs to really investigate properly.
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kevindmoore
04/19/2023, 5:14 PMDo you have instructions on this? I seem to recall that filing bugs is usually a painful process
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nosuid
04/19/2023, 5:20 PMhey Kevin, you can create a bug here https://issuetracker.google.com/issues/new?component=192708&template=840533.
In this case, you can ignore the bug description. We just need you attach the output of
Help/Collect Logs and Diagnostics...nosuid
04/19/2023, 5:21 PMif you have a small sample that reproduces the problem for you, feel free to add it as a comment too.
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kevindmoore
04/19/2023, 6:09 PMFiled
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Colton Idle
04/19/2023, 6:34 PMcool. i'll do this as well. im in and out of the office this week. but im sure the next time it happens i will try to create a bug with those outputs
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kevindmoore
04/20/2023, 3:53 PMHmm. My bug just got rejected as "Infeasible". Not enough info to proceed
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Chris Sinco [G]
04/20/2023, 4:17 PMCan you send a link to it?
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kevindmoore
04/20/2023, 4:18 PMc
Chris Sinco [G]
04/20/2023, 4:22 PMThank you! I forwarded to the team. Our triage process isn’t the best when bugs are filed to the main public component
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kevindmoore
04/22/2023, 7:41 PMFYI: I’m now testing on my personal Mac and preview is a lot faster. Could be VPN or other issues with corporate laptop?
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Colton Idle
05/15/2023, 8:09 PM@kevindmoore nice job filing that issue. Looks like it'll be fixed in canary 5!!!
Woot woot. thanks @Chris Sinco [G]
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kevindmoore
05/15/2023, 8:09 PMYes!!
kevindmoore
05/15/2023, 8:09 PMGlad they listened
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Colton Idle
05/15/2023, 8:13 PMYep! It's so nice not to have your anecdotal experience brushed off. I've seen much better preview speed in Canary 3. Looking forward to c5!
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