Line allocations

Attribute Julia allocation bytes to source lines with the legacy :alloc collector.

From examples/kitchen-sink in the source checkout, run julia setup.jl core. Then start Julia with julia --project=. for the code below.

using PerfChecker
include("suite.jl")
plan = plan_suite(build_suite(); profile=:historical,
    version_provider=_ -> KITCHEN_VERSIONS)
selected = filter_suite_plan(plan; features=[:heap_32768_alloc],
    from_version=v"0.19.6", to_version=v"0.19.6")
result = run_suite_repl(selected; reports="results/line-allocations")

The saved DataStructures 0.19.6 line-allocation heatmap shows the recorded source attribution:

Open the same interactive export

Download the serialized plot

Totals reflect the collection scope and repetition. They are not interchangeable with sampled allocation-profile bytes or per-call benchmark allocations.

Trace cleanup and cancellation

Julia creates source.jl.<worker-pid>.mem files beside executed sources. PerfChecker removes the current worker's new traces after success, errors and cancellation, and restores overwritten pre-existing traces. Other processes' files are preserved. For async suites, call cancel_suite!(job) then wait_suite(job); a cancellation request does not mean cleanup finished. A cleanup error retains an inventory and journal at the reported paths. A killed controller or power loss can leave traces; inspect ownership before recovering them. A synthetic include_string filename outside the known source roots is not covered.