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Nate Cull's posts Post Back to profile
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@er1n this is both one of my biggest agony points in UI design and one reason I haven't released SotF :P I can lag it in some cases and it really bugs me because I can't figure out why, not even with flame graphs and profiler timelines
29 May 2018 at 4:41 | Wall-to-wall | Open on sdfn-01.ninjawedding.org
19 comments
erin ｡:ﾟ૮ ˶ˆ ﻌ ˆ˶ ა ﾟ:｡

@ninjawedding i was actually thinking about your scrolling demo when i cc'd you :)

29 May 2018 at 4:42 | Open on social.mecanis.me
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@er1n oh the scrolling thing, heh

yeah I was really (disproportionately?) happy when that worked the way I wanted it to. I mean it's just scrolling but being able to zoom through tens or hundreds of thousands of items at full framerate and bounded memory is still something I love
29 May 2018 at 4:47 | Open on sdfn-01.ninjawedding.org
erin ｡:ﾟ૮ ˶ˆ ﻌ ˆ˶ ა ﾟ:｡
Mx Lottie 💜:autistic:​🇯🇲ΘΔ
cascode

@LottieVixen @ninjawedding @er1n profiler output visualization tool, helps you see what functions and system calls your program is spending the most time on

this, or similar (like what erin linked) :
brendangregg.com/FlameGraphs/c

29 May 2018 at 4:53 | Open on glitch.social
erin ｡:ﾟ૮ ˶ˆ ﻌ ˆ˶ ა ﾟ:｡

@cascode @LottieVixen @ninjawedding the difference with what i posted is that it's very good for monitoring infrequent events

29 May 2018 at 4:54 | Open on social.mecanis.me
Mx Lottie 💜:autistic:​🇯🇲ΘΔ
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@cascode @LottieVixen @er1n yep, pretty much that (I got weird lag on this status 🤷 )

first image is an example of a flame graph from the QML profiler; you can see that the majority of total time was spent updating a binding (and, amusingly, there's no sub-operation inside it). you can then look at the timeline to see what that looks like over time, which is useful for analyzing things like "what's causing jank" etc and getting an idea of what that 51.7% of time spent means in terms of frame budget

FlameScope does look cool, I just don't know how to integrate it yet :P
@cascode @LottieVixen @er1n yep, pretty much that (I got weird lag on this status 🤷 )

first image is an example of a flame graph from the QML profiler; you can see that the majority of total time was spent updating a binding (and, amusingly, there's no sub-operation inside it). you can then look at the timeline to see what that looks like over time, which is useful for analyzing things like "what's...
the QML profiler's flame graph running on a sparkline renderer
same application, same dataset, but the timeline view
29 May 2018 at 4:59 | Open on sdfn-01.ninjawedding.org
erin ｡:ﾟ૮ ˶ˆ ﻌ ˆ˶ ა ﾟ:｡
🍂
@er1n oh huh

that could make it really easy then 🤔

actually I think you told me about this before lol
29 May 2018 at 5:02 | Open on sdfn-01.ninjawedding.org
Mx Lottie 💜:autistic:​🇯🇲ΘΔ

@ninjawedding @cascode @er1n

oh heck this looks awesome, also erm....the delay may be toot.cat fed issues....*sigh*

29 May 2018 at 5:01 | Open on toot.cat
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@LottieVixen @cascode @er1n yeah the tools are great

though tbh similar tools have been in web browsers for quite a while too :)

actually I'd say that browsers have probably some of the best profiling tools out there right now? next to maybe like Instruments, bespoke profiling tools in game engines, and Telemetry, which I have never used but have seen and it looks sick
@LottieVixen @cascode @er1n yeah the tools are great

though tbh similar tools have been in web browsers for quite a while too :)

29 May 2018 at 5:05 | Open on sdfn-01.ninjawedding.org
erin ｡:ﾟ૮ ˶ˆ ﻌ ˆ˶ ა ﾟ:｡

@ninjawedding @LottieVixen @cascode telemetry is theoretically amazing but it's also probably unfathomably expensive, like so expensive that they just say "contact us if you're interested"

29 May 2018 at 5:06 | Open on social.mecanis.me
Mx Lottie 💜:autistic:​🇯🇲ΘΔ
🍂
@LottieVixen @er1n @cascode I think you would do fine -- Telemetry's data comes from hooks you write into the code, so they work a lot like print statements

(or so I hear)
29 May 2018 at 5:12 | Open on sdfn-01.ninjawedding.org
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@er1n @LottieVixen @cascode heh yeah -- when I first saw Telemetry in use I was like "oh how much could this be? certainly no worse than CLion"

lol me
29 May 2018 at 5:08 | Open on sdfn-01.ninjawedding.org
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