parca-agent

The big change in v0.33.0 is the ability to add custom labels to stacks via minimal instrumentation from target processes. This works with Go by extracting all Goroutine labels (set via pprof.Do or pprof.SetGoRoutineLabels), or C, C++, and Rust using the custom-labels library (or anything else that follows the same ABI). Note, this is an experimental feature and may break in the future.

Enhancement

• build: reintroduce snap packaging, test, and release flows by @jnsgruk in https://github.com/parca-dev/parca-agent/pull/2969
• Support thread ID label by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2970
• Supports native custom labels by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2977
• Wire up metrics from the otel library by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2980

Bug fixes

• Only cache metadata if successfully gathered by @brancz in https://github.com/parca-dev/parca-agent/pull/2979
• Fix duplicate registration during grpc retry by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2982
• Search for k8s containers by name, not position in array. by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2983

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.32.0...v0.33.0

This release of Parca Agent marks a huge milestone! From now on, Parca-Agent, the previously only fully open source, Apache2 licensed, and open for contributions eBPF-based profiler is now based on the opentelemetry-ebpf-profiler, and all language support efforts will be focused there. By basing the Parca-Agent on the opentelemetry-ebpf-profiler besides the C, C++, Rust, Go, Python, and Ruby support, it gained JVM, .NET, Perl, and PHP support! However, on top of the opentelemetry-ebpf-profiler the Parca Agent continues to ship a deep end-to-end integration with the Parca server, delivering the only fully open-source end-to-end system-wide profiling experience.

As such it ships several things on top:

1. Allow the Parca server to asynchronously symbolized stacktraces. This means not only interpreted languages have function names, but C, C++, Rust, Go, etc. as well.
2. A more optimized wire-protocol based on Apache Arrow. Less CPU time spent putting together the data to send off to the server and less bytes!
3. A wide array of metadata from Kubernetes, containerd, cgroups, lxc, docker, etc. so you can make profiling adapt to how you organize your data!

And more!

To use the v0.32.0 release, a Parca server v0.22.0+ is required due to the new wire protocol. Try it out right away via the Quickstart!

Happy Profiling!

Parca Maintainers Team

Highlights

1. Warn on failure to read custom labels by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2913
2. Auto-limit memory by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2912
3. Don't set custom labels ID if we failed to save the hash by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2915

What's Changed

• build(deps): update module github.com/prometheus/common to v0.55.0 by @renovate in https://github.com/parca-dev/parca-agent/pull/2906
• build(deps): update dependency golang to v1.22.5 by @renovate in https://github.com/parca-dev/parca-agent/pull/2905
• build(deps): update module github.com/minio/highwayhash to v1.0.3 by @renovate in https://github.com/parca-dev/parca-agent/pull/2907
• chore(deps): update gcr.io/distroless/base-debian11 docker digest to ac69aa6 by @renovate in https://github.com/parca-dev/parca-agent/pull/2909
• build(deps): update gcr.io/distroless/static docker digest to ce46866 by @renovate in https://github.com/parca-dev/parca-agent/pull/2908
• chore(deps): jsonnet-bundler Lock file maintenance by @renovate in https://github.com/parca-dev/parca-agent/pull/2910
• chore(deps): nix Lock file maintenance by @renovate in https://github.com/parca-dev/parca-agent/pull/2911
• Warn on failure to read custom labels by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2913
• Fix erroneous nCustomLabels accounting by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2914
• Auto-limit memory by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2912
• Don't set custom labels ID if we failed to save the hash by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2915

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.31.0...v0.31.1

Highlights

1. Custom labels to turn Go profiling labels into pprof labels
2. MUSL support
3. Enhanced python support, especially on arm64 and alpine/MUSL systems
4. Arm64 fixes for PAC mode
5. Synthetic unwinder errors
6. Improved dwarf unwinding by using .debug_frame and .debug_link
7. Fixes for linux 6.8 kernels (verifier errors)

What's Changed

• java: Add groundwork for the naive unwinder by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2591
• Use object file pool cache for unwind information by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2595
• Fix benign but bogus main executable assumption by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2596
• bpf/unwinder/native: remove duplicated code by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/2603
• Scripts ergonomics by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2601
• Various fixes for aarch64 by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2604
• go.*: Update runtime-data by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2610
• Only attempt to profile online CPUs by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2646
• Fix function end detection by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2636
• Surface unwind failure reasons in status page by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2649
• Bump Ainur to fix Go version misdetection by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2656
• Add a bit more logging/metrics when unwind table adding fails by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2670
• pkg/profiler/cpu/bpf/maps: Improve too many mappings error message by @brancz in https://github.com/parca-dev/parca-agent/pull/2675
• Add "unwind failed" synthetic stacks by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2682
• add failed reasons stacks even when there are no other stacks in the profile by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2687
• Avoid filling uploadJob channel w/ NoopDebugInfoManager by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2686
• Fix template test by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2690
• Fix bug where event processors exit on error by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2688
• Oops, don't log unconditionally by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2693
• Fix off-by-one error in chunk splitting by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2697
• Add "request read" event by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2705
• Makefile fixes for guix by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2706
• fast integration by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2698
• Don't swallow errors from GenerateCompactUnwindTable by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2718
• minor logging improvements by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2709
• Run amd64 integration tests on public github actions runners by @brancz in https://github.com/parca-dev/parca-agent/pull/2720
• remove no-op Close statement by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2721
• Fix pointer authentication for FP-based unwinding by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2732
• Fix arm native integration tests by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2734
• Fix unwinder loading on 6.8 kernels by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2667
• Bump max per-process mappings up to 2000 by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2749
• bpf/unwinders/pyperf: Use an LRU map and increase the size by @brancz in https://github.com/parca-dev/parca-agent/pull/2760
• Properly get return address for leaf frames on ARM during syscalls by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2761
• Log in another case where we unexpectedly fail to add unwind table by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2766
• Use both .eh_frame and .debug_frame by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2717
• Update MAINTAINERS.md by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/2771
• Fix build ID precedence by @brancz in https://github.com/parca-dev/parca-agent/pull/2775
• spam opaquify in more places to fix verifier issues on 6.8 by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2781
• .github: Don't skip building snap if only changing .c files by @brancz in https://github.com/parca-dev/parca-agent/pull/2783
• Don't use .debug_frame info for Go binaries by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2782
• Fix Python version detection by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2794
• feat: add procfs cmdline by @dreamerlzl in https://github.com/parca-dev/parca-agent/pull/2799
• don't hang on panic in Run() by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2792
• fix duplicated leaf frame for dwarf unwinding by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2811
• Get Go custom label offsets dynamically by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2808
• fix verification on 5.4 by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2816
• Add Tommy to MAINTAINERS.md by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2820
• support musl 1.2.5/alpine 3.20 by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2823
• Musl support by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2605
• fix go runtime detection to work with containers by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2815
• Refix 5.4 verifier error by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2837
• add the stack anyway in the case of truncation for native frames. by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2850
• Deduplicate list of PIDs in processEventBatcher by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2845
• If we have should_use_fp_by_default set we need to honor it or we will fail to unwind go binaries with no dwarf info. by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2858
• memset entire unwind_state by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2857
• Use arm for skip-check by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2863
• Use --verbose instead of --debug by @brancz in https://github.com/parca-dev/parca-agent/pull/2867
• ra-1 fix for FP unwinding by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2874
• Fix one more case where we should assume we're done walking the stack when we have dwarf info but encounter a pc out of range. by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2872
• Revert "memset the entire unwind_state to make sure no" by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2878
• Remove synthetic unwinder error frames from agent and instead generate them in the unwinder with more context by @gnurizen in https://github.com/parca-dev/parca-agent/pull/2851
• Collect custom labels by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2833
• fix x86 verification issues with custom labels by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2886
• fix wrong computation of current goroutine in kernel code on arm by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2887
• Fix various issues with debuginfo uploading by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2895
• Fix various panics in DWARF decoding by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2896
• Increase warning level when failing to fetch unwinder info by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2892
• Fix golang runtime detection for containers by @umanwizard in https://github.com/parca-dev/parca-agent/pull/2903

New Contributors

• @umanwizard made their first contribution in https://github.com/parca-dev/parca-agent/pull/2604

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.30.0...v0.31.0

What's Changed

• java: Read version from the binary by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2580
• Add ability to read trace id from goroutine labels of Go processes by @brancz in https://github.com/parca-dev/parca-agent/pull/2574

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.29.0...v0.30.0

Features

• elfwriter: Add a writer that mimics objcopy --keep-only-debug by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2144

Fixes

• elfwriter: Better compressed section handling by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2133
• Fix for 5.4 and older kernels running on arm64 by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2177
• (fixes a panic) unwind info: Implement opcode for return address signing by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2193

Improvements

• Makefile: Unify make action naming by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2146
• Add LFU cache by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2038
• feat(snap): ensure snapd restarts service if the agent crashes by @jnsgruk in https://github.com/parca-dev/parca-agent/pull/2215

Performance

• unwinder/native: Remove unnecessary return address read by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2198
• runtime/interpreter: Check the paths first for faster and cheaper detection by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2196
• *: Optimize procinfo mapping updates by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2194

Memory savings in the BPF maps

• unwinder/native: Unify native stacks by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2199
• unwinder/interpreters: Unify interpreter stacks by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2214

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.26.0...v0.27.0

Features

• Add check for known kernel issues by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2070
• Add support for more Ruby versions by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2090

Fixes

• pkg/process: Remove dead code from maps.go by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/2052
• docs: update kernel minimum requirement by @dreamerlzl in https://github.com/parca-dev/parca-agent/pull/2063
• pkg/process: Do not overallocate executable maps by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2065
• bpf: Fix task identifier usage by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2066
• pkg/stack/unwind: Remove unused argument by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2076
• Do not produce bad synthetic rows by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2080
• Remove redundant unwind rows by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2081
• Use 64 bit hash and fix out of bounds access by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2102

Testing

• Add support for printing the final BPF tables by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2077
• Add support for printing the final BPF tables by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2077

Other

• Move debuginfo extraction to elfwriter package by @brancz in https://github.com/parca-dev/parca-agent/pull/2100

New Contributors

• @dreamerlzl made their first contribution in https://github.com/parca-dev/parca-agent/pull/2063

What's Changed

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.25.1...v0.26.0

This release is a small improvement over v0.25.0 which improves performance and lowers/removes large memory spikes.

What's Changed

• *: Add more CPU profiler metrics by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2041
• bpf: rate limit events by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2040
• pkg/process: Only keep executable mappings by @brancz in https://github.com/parca-dev/parca-agent/pull/2050
• unwinder/native: Accomodate larger program due to rate limits by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2059
• deps: Upgrade prometheus/procfs by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2061

Breaking changes

--verbose-bpf-logging is now --bpf-verbose-logging

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.25.0...v0.25.1

Changelog

Features

• BPF: Add DWARF Unwinding for Arm64 by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/2023

Fixes

• objectfile: Remove panics by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/2032
• pkg/cache: Fix data races by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2031

Enhancements

• Reduce size of object pool by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2028
• Add panic reporting by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/2026

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.24.0...v0.25.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.25.0

Thanks!

Join our Discord server;
Follow us on Twitter;
Read the documentation.

Changelog

Fixes

• Fix only reporting profiling data of a single thread of a process per profiling cycle by @brancz in https://github.com/parca-dev/parca-agent/pull/1874

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.23.1...v0.23.2

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.23.2

Thanks!

Join our Discord server;
Follow us on Twitter;
Read the documentation.

Changelog

Fixes

• Fix processes not being able to be unwinded, which is accidentally caused by not having symbol tables by @brancz in https://github.com/parca-dev/parca-agent/pull/1867

Enhancement

• Add metadata to identify Python and Ruby processes by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1868

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.23.0...v0.23.1

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.23.1

Thanks!

Join our Discord server;
Follow us on Twitter;
Read the documentation.

Changelog

Fixes

• Use frame pointer unwinding for v8-based applications by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1836
• grpc/conn: Introduce exponential backoff retry with jitter for unary requests by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1826
• Make archive names linux uname -m compatible by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1830

Misc

• ci: Run vmtests before go-build tests by @Namanl2001 in https://github.com/parca-dev/parca-agent/pull/1814
• build: Clean generated BPF object files by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1824
• deploy/jsonnet: Make PSP optional by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1823
• chore(deploy/e2e): clean up PSP hacks by @maxbrunet in https://github.com/parca-dev/parca-agent/pull/1839
• deploy: Make default namespace independent by @brancz in https://github.com/parca-dev/parca-agent/pull/1847
• cmd/parca-agent/main.go by @brancz in https://github.com/parca-dev/parca-agent/pull/1843

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.21.0...v0.22.0

New Contributors

• @Namanl2001 made their first contribution in https://github.com/parca-dev/parca-agent/pull/1814

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.22.0

Thanks!

Join our Discord server;
Follow us on Twitter;
Read the documentation.

Changelog

Features

• Enable arm64 unwinding with frame pointers by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1805

Improvements

• Always include all architectures of BPF programs by @brancz in https://github.com/parca-dev/parca-agent/pull/1809
• *: Fix arm64 builds to choose correct BPF file by @brancz in https://github.com/parca-dev/parca-agent/pull/1807

Fixes

• Fix JITDump symbolization edge-case by @brancz in https://github.com/parca-dev/parca-agent/pull/1812
• use error.As() by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/1810
• Increase default object file pool size and improve error by @brancz in https://github.com/parca-dev/parca-agent/pull/1800

Misc

• ci(release): update latest tag by @maxbrunet in https://github.com/parca-dev/parca-agent/pull/1787
• Add analytics by @brancz in https://github.com/parca-dev/parca-agent/pull/1803

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.20.0...v0.21.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.21.0

Thanks!

Join our Discord server;
Follow us on Twitter;
Read the documentation.

This Parca Agent release includes three main additions:

1. Improved support for short lived processes.
2. Add support for unwinding mixed stacks (JIT/DWARF/frame-pointer).
3. Various metadata stability improvements.

Apart from these dozens of parca Agent performance improvements landed.

Happy profiling!

— Parca Maintainers

Changelog

• Add Go package to interact with libasyncprofiler by @v-thakkar in https://github.com/parca-dev/parca-agent/pull/1512
• chore: Disable deprecated linters by @v-thakkar in https://github.com/parca-dev/parca-agent/pull/1601
• pkg/asyncprofiler: Refactor NewAsyncProfiler to use functional options by @v-thakkar in https://github.com/parca-dev/parca-agent/pull/1603
• Overhaul process info discovery by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1507
• local dev/testing: Add missing dependencies for local tilt test setup by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1610
• pkg/asyncprofiler: Fix options format in SetAction by @v-thakkar in https://github.com/parca-dev/parca-agent/pull/1609
• *: Fetch labels at the first encounter with a process by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1611
• chore(container): add commit timestamp to image tag by @maxbrunet in https://github.com/parca-dev/parca-agent/pull/1621
• cpu.go: Show error if there's an error loading the BPF code by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1620
• Upgrade libbpfgo to 80f41e18e690 by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1622
• Profile correctness tests by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1627
• tests: Move integration tests to their own dir by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1629
• chore: Remove exclude-rules for the arguments pkg by @v-thakkar in https://github.com/parca-dev/parca-agent/pull/1630
• *: Remove retry limit and fix race conditions around ObjectFile by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1623
• pkg/perf: Optimize perf map parsing by @brancz in https://github.com/parca-dev/parca-agent/pull/1650
• build(container): add metadata labels by @maxbrunet in https://github.com/parca-dev/parca-agent/pull/1656
• internal/pprof: Remove unused vendored pprof packages by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1652
• Do not normalize addresses from JIT'd code by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1651
• tests/integration: Improve assertions by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1660
• deploy/tilt(dev): Add and configure kube-prometheus for local dev cluster by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1661
• *: Fix metadata caching issues by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1653
• Bump github.com/docker/distribution from 2.8.1+incompatible to 2.8.2+incompatible by @dependabot in https://github.com/parca-dev/parca-agent/pull/1636
• pkg/perf: Reduce allocs in ReadMap when parsing a large file by @marselester in https://github.com/parca-dev/parca-agent/pull/1669
• pkg/discovery: Handle multi-target discovery groups properly by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1682
• main: Add pprof config flags by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1683
• metadata/debuginfo: Add a flag to disable caching for metadata and debuginfo components by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1685
• pkg/cpu: Fix variable shadowing of error value by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/1688
• *: Add inital tracing support using OTel (local testing using jaeger) by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1684
• *: Remove unbounded caches by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1672
• *: Add metrics, everywhere by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1634
• chore(local-observability): use release container image tags by @maxbrunet in https://github.com/parca-dev/parca-agent/pull/1700
• bpf: Add mixed-mode unwinding for JIT sections by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/1670
• Use libbpf's cpu number helper by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1709
• objectfile: Fix concurrent read and premature close issues by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1689
• go.*/gprc: Upgrade grpc middlewares by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1715
• *: Add native histograms by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1717
• Enable native histograms for local promethei by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1718
• *: Separate obtaining raw data and pprof conversion by @brancz in https://github.com/parca-dev/parca-agent/pull/1716
• pkg/maps: Don't report not ELF errors by @brancz in https://github.com/parca-dev/parca-agent/pull/1724
• Disable RPC logging by default by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1725
• Use more conventional naming by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1728
• grpc: Fix codec issue causes kubernetes metadata problems by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1729
• pkg/process: Save whether mapping contains debuginfo to upload by @brancz in https://github.com/parca-dev/parca-agent/pull/1730
• pkg/profiler/cpu: Prevent creating unnecessary closure by @brancz in https://github.com/parca-dev/parca-agent/pull/1731
• bpf: enable JIT unwinding by default by @Sylfrena in https://github.com/parca-dev/parca-agent/pull/1727
• Refactor converter component by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1734
• *: Introduce lightweight LRU cache and use in hotpaths by @brancz in https://github.com/parca-dev/parca-agent/pull/1732
• debuginfo/manager: Exclude the time to wait for goroutines turn by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1739
• fix(config): fix reloading config from Kubernetes ConfigMap by @maxbrunet in https://github.com/parca-dev/parca-agent/pull/1735
• buildid: Simplify and optimize build id extraction by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1740
• pkg/process: Ensure debuginfo is uploaded by @brancz in https://github.com/parca-dev/parca-agent/pull/1743
• pkg/process: Filter mappings to only consider executable sections by @brancz in https://github.com/parca-dev/parca-agent/pull/1745
• pkg/process: Fix race by @brancz in https://github.com/parca-dev/parca-agent/pull/1746
• *: Remove 3rd-party multi-error packages by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1755
• tests/integration: enable in CI by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1758
• tests/integration: Fix stackContains by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1763
• cpu/process info: Reject inflight requests by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1765
• *: Remove burrow.Cache use cache.LRU instead by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1760
• maps/vdso: Simplify Base Address calculation by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1768
• Upgrade ainur by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1771
• *: Simplify ObjectFile life-cycle by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1770
• *: Avoid constant recreation of goroutines by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1759
• Use puzpuzpuz/xsync instead of sync.Map by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1772
• Improve Process Info cache performance by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1773
• Add a flag to configure RPC unary timeout by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1775
• Add a flag to control object file pool size by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1776
• Do not cache process info if we failed to read a mapping by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1777
• Add flags to control perf event buffer event handling by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1778

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.19.0...v0.20.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.20.0

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Changelog

Improvements

• perf(grpc): use optimized code from vtprotobuf by @maxbrunet in https://github.com/parca-dev/parca-agent/pull/1581
• ksym: Introduce disk-based symbolizer, reducing mem usage by ~15% by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1587
• profiler: Reduce mem usage in maps with no filters by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1588
• unwinder/native: Remove polling mode by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1583

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.18.0...v0.19.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.19.0

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Changelog

Fixes*

• Fix race in unwind information state by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1576
• Move fdtransfer to target directory by @v-thakkar in https://github.com/parca-dev/parca-agent/pull/1578

Minor Changes

• build: Pass sanitizers in debug build by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1577

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.17.2...v0.18.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.18.0

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Changelog

Fixes

• Add cache stat metrics by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1521
• pkg/debuginfo: Fix extraction logic by @brancz in https://github.com/parca-dev/parca-agent/pull/1533

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.17.0...v0.17.1

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.17.1

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Changelog

Enhancements:

• symbolizer: Add flag to disable JIT symbolization by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1504
• cmd/parca-agent: Refactor flag structs by @kakkoyun in https://github.com/parca-dev/parca-agent/pull/1503
• pkg/profiler/cpu: Downgrade process name reading error by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1492

Bug fixes:

• pkg/profiler: Reset process information if full by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1502

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.15.0...v0.16.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.16.0

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Changelog

Features:

• *: Populate process mappings on-demand by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1457
• Add arguments package generated by SWIG tool by @v-thakkar in https://github.com/parca-dev/parca-agent/pull/1464

Enhancements:

• pkg/debuginfo: Add plt symbol by @zdyj3170101136 in https://github.com/parca-dev/parca-agent/pull/1351
• pkg/debuginfo: add content length by @zdyj3170101136 in https://github.com/parca-dev/parca-agent/pull/1481
• pkg/vdso: Support vdso mapping by @zdyj3170101136 in https://github.com/parca-dev/parca-agent/pull/1455
• pkg/stack/unwind: Filter out jitdump mappings by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1477

Bug fixes:

• unwinder/native: Discard stacks with just one frame by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1478
• profiler: Improve normalization errors handling by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1476
• unwinder/native: Refresh process information by @javierhonduco in https://github.com/parca-dev/parca-agent/pull/1483
• fix/objectfile: compute right cache key by @zdyj3170101136 in https://github.com/parca-dev/parca-agent/pull/1454

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.14.0...v0.15.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.15.0

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Changelog

Features:

• Unwinding for applications without frame pointers enable by default (#1375)
• Support reading symbols from jitdump (#1051)

Enhancements:

• Updated LLVM from 12 to 14 (#1358)

Bug fixes:

• Fix association problems of children processes in (#1348)
• Ensure cached debuginfo path are not stale (#1332)

Full Changelog: https://github.com/parca-dev/parca-agent/compare/v0.12.0...v0.13.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.13.0

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