mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
121 lines
6.2 KiB
121 lines
6.2 KiB
6 months ago
|
<!---
|
||
|
|
Automatically generated by tools/codegen/core/gen_trace_flags.py
|
||
|
|
--->
|
||
|
|
|
||
|
|
gRPC Trace Flags
|
||
|
|
----------------
|
||
|
|
|
||
|
|
The `GRPC_TRACE` environment variable supports a comma-separated list of tracer
|
||
|
|
names or glob patterns that provide additional insight into how gRPC C core is
|
||
|
|
processing requests via debug logs. Available tracers include:
|
||
|
|
|
||
|
|
- api - API calls to the C core.
|
||
|
|
- backend_metric - C++ backend metric recorder APIs.
|
||
|
|
- backend_metric_filter - Filter that populates backend metric data in server trailing metadata.
|
||
|
|
- bdp_estimator - Behavior of bdp estimation logic.
|
||
|
|
- call - Traces operations on a call through the gRPC stack.
|
||
|
|
- call_error - Possible errors contributing to final call statuses.
|
||
|
|
- cares_address_sorting - Operations of the c-ares based DNS resolver's address sorter.
|
||
|
|
- cares_resolver - Operations of the c-ares based DNS resolver.
|
||
|
|
- cds_lb - CDS LB policy.
|
||
|
|
- channel - Operations on the C core channel stack.
|
||
|
|
- channel_stack - Construction of the set of filters in a channel stack.
|
||
|
|
- chaotic_good - Chaotic good transport.
|
||
|
|
- chttp2_hpack_parser - HTTP/2 HPACK parser.
|
||
|
|
- chttp2_new_stream - HTTP/2 incoming stream creation.
|
||
|
|
- client_channel - Client channel control plane activity, including resolver and load balancing policy interaction.
|
||
|
|
- client_channel_call - Client channel call activity related to name resolution.
|
||
|
|
- client_channel_lb_call - Client channel call activity related to load balancing picking.
|
||
|
|
- client_idle_filter - Client idleness filter.
|
||
|
|
- compression - Compression operations.
|
||
|
|
- connectivity_state - Connectivity state changes to channels.
|
||
|
|
- cronet - Cronet transport engine.
|
||
|
|
- dns_resolver - The active DNS resolver.
|
||
|
|
- environment_autodetect - GCP environment auto-detection.
|
||
|
|
- event_engine - High-level EventEngine operations.
|
||
|
|
- event_engine_client_channel_resolver - EventEngine-based client channel resolver state and events.
|
||
|
|
- event_engine_dns - EventEngine DNS resolver.
|
||
|
|
- event_engine_endpoint - EventEngine Endpoint operations.
|
||
|
|
- event_engine_endpoint_data - Detailed dump of EventEngine endpoint TCP data.
|
||
|
|
- event_engine_poller - EventEngine Poller events.
|
||
|
|
- executor - gRPC's legacy thread pool ('the executor').
|
||
|
|
- fault_injection_filter - Fault injection.
|
||
|
|
- flowctl - Http2 flow control.
|
||
|
|
- fork - Fork support.
|
||
|
|
- glb - gRPClb load balancer.
|
||
|
|
- grpc_authz_api - gRPC authorization.
|
||
|
|
- handshaker - Handshaking state.
|
||
|
|
- health_check_client - Health checking client code.
|
||
|
|
- http - Http2 transport engine.
|
||
|
|
- http1 - HTTP/1.x operations performed by gRPC.
|
||
|
|
- http2_ping - Pings/ping acks/antagonist writes in http2 stack.
|
||
|
|
- http2_stream_state - Http2 stream state mutations.
|
||
|
|
- http_keepalive - gRPC keepalive pings.
|
||
|
|
- inproc - In-process transport.
|
||
|
|
- metadata_query - GCP metadata queries.
|
||
|
|
- op_failure - Error information when failure is pushed onto a completion queue. The `api` tracer must be enabled for this flag to have any effect.
|
||
|
|
- orca_client - Out-of-band backend metric reporting client.
|
||
|
|
- outlier_detection_lb - Outlier detection.
|
||
|
|
- pick_first - Pick first load balancing policy.
|
||
|
|
- plugin_credentials - Plugin credentials.
|
||
|
|
- priority_lb - Priority LB policy.
|
||
|
|
- queue_pluck - Completion queue plucking. The `api` tracer must be enabled for this flag to have any effect.
|
||
|
|
- resource_quota - Resource quota objects internals.
|
||
|
|
- retry - Call retries.
|
||
|
|
- ring_hash_lb - Ring hash load balancing policy.
|
||
|
|
- rls_lb - RLS load balancing policy.
|
||
|
|
- round_robin - Round robin load balancing policy.
|
||
|
|
- secure_endpoint - Bytes flowing through encrypted channels.
|
||
|
|
- server_channel - Lightweight trace of significant server channel events.
|
||
|
|
- stateful_session_filter - Stateful session affinity.
|
||
|
|
- subchannel - Connectivity state of subchannels.
|
||
|
|
- subchannel_pool - Subchannel pool.
|
||
|
|
- tcp - Bytes in and out of a channel.
|
||
|
|
- timer - Timers (alarms) in the grpc internals.
|
||
|
|
- timer_check - more detailed trace of timer logic in grpc internals.
|
||
|
|
- tsi - TSI transport security.
|
||
|
|
- weighted_round_robin_lb - Weighted round robin load balancing policy.
|
||
|
|
- weighted_target_lb - Weighted target LB policy.
|
||
|
|
- xds_client - XDS client.
|
||
|
|
- xds_client_refcount - Refcount of XDS client.
|
||
|
|
- xds_cluster_impl_lb - XDS Cluster impl LB policy.
|
||
|
|
- xds_cluster_manager_lb - XDS Cluster manager LB policy.
|
||
|
|
- xds_override_host_lb - XDS Override host LB.
|
||
|
|
- xds_resolver - XDS Resolver.
|
||
|
|
- xds_server_config_fetcher - XDS Server config fetcher.
|
||
|
|
- xds_wrr_locality_lb - XDS WRR locality LB policy.
|
||
|
|
|
||
|
|
The following tracers will only run in binaries built in DEBUG mode. This is
|
||
|
|
accomplished by invoking `bazel build --config=dbg <target>`
|
||
|
|
- auth_context_refcount - Auth context refcounting.
|
||
|
|
- call_combiner - Call combiner state.
|
||
|
|
- call_refcount - Refcount on call.
|
||
|
|
- closure - Legacy closure creation, scheduling, and completion.
|
||
|
|
- combiner - Combiner lock state.
|
||
|
|
- cq_refcount - Completion queue refcounting.
|
||
|
|
- error_refcount - Error refcounting.
|
||
|
|
- fd_refcount - File descriptor refcounting.
|
||
|
|
- fd_trace - Legacy file descriptor create(), shutdown() and close() calls for channel fds.
|
||
|
|
- lb_policy_refcount - LB policy refcounting.
|
||
|
|
- party_state - Coordination of activities related to a call.
|
||
|
|
- pending_tags - Still-in-progress tags on completion queues. The `api` tracer must be enabled for this flag to have any effect.
|
||
|
|
- polling - The active polling engine.
|
||
|
|
- polling_api - API calls to polling engine.
|
||
|
|
- promise_primitives - Low-level primitives in the promise library.
|
||
|
|
- resolver_refcount - Resolver refcouting.
|
||
|
|
- security_connector_refcount - Refcounting for security connectors (part of channel credentials).
|
||
|
|
- slice_refcount - Slice refcounting.
|
||
|
|
- stream_refcount - Stream refcounting.
|
||
|
|
- subchannel_refcount - Subchannel refcounting.
|
||
|
|
- work_serializer - A synchronization mechanism used to ensure that only one thread is executing at a given time.
|
||
|
|
|
||
|
|
Glob patterns and special cases:
|
||
|
|
- `*` can be used to turn all traces on.
|
||
|
|
- Individual traces can be disabled by prefixing them with `-`.
|
||
|
|
- `*refcount*` will turn on all of the tracers for refcount debugging.
|
||
|
|
- if `list_tracers` is present, then all of the available tracers will be
|
||
|
|
printed when the program starts up.
|
||
|
|
|
||
|
|
Example:
|
||
|
|
export GRPC_TRACE=*,-pending_tags
|