v0.20.0

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

Full Changelog: v0.19.0...v0.20.0

Docker images

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

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v0.19.0

Changelog

Improvements

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

Full Changelog: v0.18.0...v0.19.0

Docker images

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

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v0.18.0

Changelog

Fixes*

• Fix race in unwind information state by @javierhonduco in #1576
• Move fdtransfer to target directory by @v-thakkar in #1578

Minor Changes

• build: Pass sanitizers in debug build by @javierhonduco in #1577

Full Changelog: v0.17.2...v0.18.0

Docker images

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

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v0.17.2

Changelog

Fixes

• Prevent the panics when we try to retry with a different number of shards by @kakkoyun in #1547

Minor Changes

• Hidden flag to disable address normalization for debugging by @marselester in #1534

Full Changelog: v0.17.1...v0.17.2

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.17.2

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v0.17.1

Changelog

Fixes

• Add cache stat metrics by @kakkoyun in #1521
• pkg/debuginfo: Fix extraction logic by @brancz in #1533

Full Changelog: v0.17.0...v0.17.1

Docker images

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

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v0.17.0

Changelog

Features:

• pkg/convert: Add JFR to pprof converter by @brancz in #1499

Enhancements:

• vmtest: Update packages by @javierhonduco in #1517

Bug fixes:

• pkg/discovery: Fix panic when systemd gets corrupted header by @marselester in #1513
• cmd/parca-agent: Make sure log format flag is used by @kakkoyun in #1506
• cmd/parca-agent: Fix debuginfo flags struct by @brancz in #1523
• pkg/profiler/cpu: Fix condition for RequestUnwindInformation by @javierhonduco in #1519

Full Changelog: v0.16.0...v0.17.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.17.0

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v0.16.0

Changelog

Enhancements:

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

Bug fixes:

• pkg/profiler: Reset process information if full by @javierhonduco in #1502

Full Changelog: v0.15.0...v0.16.0

Docker images

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

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v0.15.0

Changelog

Features:

• *: Populate process mappings on-demand by @javierhonduco in #1457
• Add arguments package generated by SWIG tool by @v-thakkar in #1464

Enhancements:

• pkg/debuginfo: Add plt symbol by @zdyj3170101136 in #1351
• pkg/debuginfo: add content length by @zdyj3170101136 in #1481
• pkg/vdso: Support vdso mapping by @zdyj3170101136 in #1455
• pkg/stack/unwind: Filter out jitdump mappings by @javierhonduco in #1477

Bug fixes:

• unwinder/native: Discard stacks with just one frame by @javierhonduco in #1478
• profiler: Improve normalization errors handling by @javierhonduco in #1476
• unwinder/native: Refresh process information by @javierhonduco in #1483
• fix/objectfile: compute right cache key by @zdyj3170101136 in #1454

Full Changelog: v0.14.0...v0.15.0

Docker images

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

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v0.14.0

Changelog

Features:

• c1e10cc: Discover java processes via hsperfdata (@v-thakkar)

Enhancements:

• 836c146: pkg/discovery: Move github.com/marselester/systemd (#1453) (@marselester)
• bb304d6: Draft of systemd discoverer with less allocs (@marselester)
• 1135ac5: Upgrage libbpf, libbpfgo and go (#1293) (@kakkoyun)
• 0ef6ec6: Adjust log level for "failed to list threads" (@mkuratczyk)
• ed1f20c: Replace systemd discoverer (@marselester)
• 3fb4b39: bpf: Bump max mappings per process to 250 (@javierhonduco)
• f8692ab: bpf: Increase total stats after we've showed them (#1400) (@javierhonduco)
• fcdfbe7: bpf: Print PID on unwind info requests (#1401) (@javierhonduco)
• 863d4ab: build/nix-shell: Use LLVM 14 (@javierhonduco)

Bug fixes:

• 54f2a69: Fix archive filename template (#1404) (@kakkoyun)
• 1727ab5: ci: Do not skip checks if BPF programs or the vmtests change (@javierhonduco)

Full Changelog: v0.13.0...v0.14.0

Docker images

docker pull ghcr.io/parca-dev/parca-agent:v0.14.0

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v0.13.0

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: v0.12.0...v0.13.0

Docker images

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

Thanks!

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