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Improve Tachyon UX #142927
Description
Activity
Please say what items you plan to work on to avoid collisions
Reacted by ivonastojanovic and László Kiss Kollár- Standardize timing arguments — Currently mixing µs and seconds for related timing args, which is confusing
- Duration should default to "until done" - The fact that we sample only for 10 seconds by default is confusing to users and a bad experience
I'll take these.
- Auto-open browser with results — Reduce manual steps in the workflow; add --no-browser flag to disable
- Hide runner/bootstrap frames by default — Top rows showing interpreter startup aren't useful for most profiling tasks
- The Gil/gc/exception indicators could be progress bars — this probably will show the information more clearly and take less space
I'll take these
17 remaining items
- Move hotspots to top of sidebar — This is the most important info; currently buried below logo and stats
Show module names instead of full file paths — /home/user/project/pkg/mod.py → pkg.mod for readability
#146040 should fix this.
Show "self" time for functions — Display time spent in function body excluding callees, not just total inclusive time
@pablogsal #145785 adds tracking for self time, but currently we only update the differential flamegraph there. Would you prefer that I open a separate PR to make this change outside of #145785, or should we handle the regular flamegraphs as a follow-up once #145785 is merged?
- added a commit that references this issue
on Mar 16, 2026 Show "self" time for functions — Display time spent in function body excluding callees, not just total inclusive time
#147706 should fix this.
- added a commit that references this issue
on Apr 4, 2026 - added 4 commits that reference this issue
on Apr 25, 2026
This is a meta issue to group all the items to improve the UX of the tachyon profiler.
Tasks
CLI
Workflow
--no-browserflag to disableFlamegraph
/home/user/project/pkg/mod.py→pkg.modfor readabilityPstats
-ooutput format — Docs imply text output but it's actually binary pstats format--pstatsbehavior — Output format differs significantly with/without-oflag, which is unexpectedThanks @dmoisset 🖤
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