| Unreleased: |
| Tracing service and probes: |
| * Print more helpful error messages if the client library is used without |
| having been initialized. |
| Trace Processor: |
| * |
| UI: |
| * |
| |
| |
| v11.0 - 2021-01-01: |
| Tracing service and probes: |
| * Added trace packet interceptor API for rerouting trace data into |
| non-Perfetto systems. |
| * Added support for printing track events to the console. |
| * Added a way to observe track event tracing sessions starting and |
| stopping. |
| Trace Processor: |
| * Added "ancestor_slice" and "experimental_ancestor_stack_profile_callsite" |
| table functions to look up ancestors of CPU stack samples in profiler |
| tables. |
| * Added power metric reporting suspend/resume time periods. |
| UI: |
| * Fixed CPU time calculation in example queries. |
| * Added tracks to debug Android SystemUI jank. |
| |
| |
| v10.0 - 2020-12-01: |
| Tracing service and probes: |
| * Fixed crash of tracing service if a client is unresponsive on the IPC |
| channel. Clients are disconnected if they don't respond to IPCs for 10s. |
| * Added cmdline arguments for integration within ChromeOS system image |
| (--{producer,consumer}-socket-{group,mode} for chmod-ing sockets). |
| * Changed path lookup logic for traced socket. /run/perfetto/ is used if the |
| directory exists, falling back on /tmp/ otherwise. |
| * Added support for kernel frame symbolization to the traced_perf callstack |
| sampler. |
| * Added support for resolving ftrace event arguments that require |
| symbolization against printk_format. |
| Trace Processor: |
| * Added .read command to inject a SQL query file, similar to the -q cmdline. |
| * Added trace-based metrics to root cause jank in Android System UI. |
| * Added symbolization support for ELF files on Windows for heap and |
| callstack profilers. |
| * Added support for symbolizing names of workqueue ftrace events. |
| * Improved Android startup metric with activity restart time. |
| UI: |
| * Added support for navigating flows with Ctrl+[ / Ctr+]. |
| * Improved query result panel, moved to the bottom group allowing |
| simultaneous query result and timeline views. |
| * Fixed data corruption when recording traces via the WebUSB-based Record |
| page in the UI. |
| |
| |
| v9.0 - 2020-11-01: |
| Tracing service and probes: |
| * Added support for recording traces from a system service through the |
| client API. |
| * The client library now reconnects producers automatically if the |
| connection to the tracing service is lost. Also fixed crashes in ongoing |
| tracing sessions when a disconnect occurs. |
| * Added support for dpu and g2d ftrace events. |
| * Enabled commit batching and producer side patching of chunks. |
| * Add support for symbolizing kernel symbols for ftrace events. |
| Trace Processor: |
| * Fixed type affinity of string columns. |
| UI: |
| * Added initial support for running metrics from the UI. |
| * Added support for displaying all flows when a slice or area is selected. |
| * Highlight nodes that match the 'focus' string in the flamegraph. |
| * Added search within slice args. |
| * Fixed details panel height and moved query panel into details panel. |
| * Enabled re-sharing of postMessage traces by echoing back the original URL. |
| * Improved record page error messages. |
| |
| |
| v8.0 - 2020-10-01: |
| Tracing service and probes: |
| * Added API for querying registered data sources and their capabilities. |
| * Added support for profiling heap allocations on Linux via LD_PRELOAD. |
| * Fixed possible race when initializing the consumer library. |
| * Fixed subtle bugs on systems with 16KB system pages. |
| Trace Processor: |
| * Added a table which lists available metrics. |
| * Added Python bindings on PyPi in the 'perfetto' package. |
| * Added support for running trace_processor_shell on Android. |
| * Added per-process metrics for GPU memory usage. |
| * Added support for exporting flow events to JSON. |
| * Added dynamic tables for navigating between slices of flows. |
| UI: |
| * Changed time marking: horizontal selection doesn't gray out anymore, |
| pressing 'm' marks the range. |
| * Added initial support for displaying flow event arrows. |
| * Improved ordering of all thread tracks under process grouping. |
| * Fixed UI crashes due to metric errors |
| * Fixed selection of thread state slices. |
| |
| |
| v7.0 - 2020-09-01: |
| Tracing service and probes: |
| * Added auto-reconnection to the SDK. Tracing::Initialize() now retries in |
| the background, instead of failing, if the tracing service is unrechable. |
| * Added support for recording cpuhp (CPU hotplug) ftrace events. |
| * Fixed heap profiling unwinding on multi-ABI systems. |
| * Fixed reporting of live objects in the native heap profiler when using |
| --dump-at-max. |
| * Fixed crash when writing trace events with field nesting level > 10. |
| Trace Processor: |
| * Added Python bindings, see |
| https://perfetto.dev/docs/analysis/trace-processor#python-api . |
| * Added ingestion for Chrome instant events and Chrome flow events. |
| * Added ingestion for Android GPU memory events and sched_blocked_reason. |
| * Added WebView power metric. |
| * Added support for WSL1 where Async I/O is not available. |
| * Improved detection of Android suspend/resume events. |
| UI: |
| * Added GPU memory recording controls and ingestion code. Requires a recent |
| Android 12+ kernel. |
| * Added details panel for flow events, showed when the user selects a slice |
| involved in a flow (arrows in the UI are still being worked on). |
| * Added instant events rendering. |
| * Added Google Analytics. |
| * Fixed I/O thread-states in 4.14 kernels to deal with the removal of |
| wake-kill using sched_blocked_reason. |
| * Fixed "Perfetto UI started debugging this browser" showing when opening |
| the UI and the Chrome extension is installed. |
| Misc: |
| * Update language to comply with Android's inclusive language guidance. |
| |
| |
| v6.0 - 2020-08-01: |
| Tracing service and probes: |
| * Added ftrace thermal events. |
| * Added support for custom allocators to the heap profiler. Allows |
| developers to report memory allocations that are not done through malloc. |
| * Added detailed timestamping of key tracing session events. |
| * Added support for building tracing services on CrOS (system-wide tracing). |
| * Fixed filtering out of stale ftrace data that predates the beginning of |
| the tracing session. |
| Trace Processor: |
| * Improved profile symbolizer. PERFETTO_SYMBOLIZER_MODE=index discovers |
| symbol files by build id rather than name. |
| * Added screen-state Android metrics. |
| UI: |
| * Added 'Info and stats' page to debug data losses and trace stats. |
| * Added full cmdline to process detail panel. |
| * Improved performance of async tracks using quantized queries. |
| * Improved performance of counter and slice tracks for long traces by |
| pre-caching quantized track data. |
| * Improved actionablility of crash dialog when the Wasm module OOMs. |
| |
| |
| v5.0 - 2020-07-01: |
| Tracing service and probes: |
| * Added gpu_mem_total ftrace event. |
| * Added TrustZone (scm start/end) event. |
| * Added protos for GPU memory tracking and updated render stages proto. |
| * Added time_in_state probe for Android (CPU time broken down by frequency). |
| |
| Trace Processor: |
| * Added ingestion of IRQ and SoftIRQ events. |
| * Added ingestion of workqueue events. KAddr symbolization still missing. |
| * Added ingestion of voltage regulators and board clock change events. |
| * Added ingestion of new ION ion_buffer_create/destroy events. |
| * Added ingestion of TrustZone (scm start/end) events. |
| * Added SurfaceFlinger derived events (tracking of missed frames). |
| * Changed parsing of scheduler task state on 4.14 kernels. |
| * Changed importing of Java heap graphs: allow partial dumps. |
| * Improved performance of the SQL query engine. |
| |
| UI: |
| * Added dedicated query page for custom SQL queries. |
| * Added navigation links for Binder slices. |
| * Removed overview summary mode when zoomed out. |
| * Fixed recording page when targeting Android P. |
| * Improved slice pan/zoom performance by quantizing. |
