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-rw-r--r--doc/environment_variables.md5
1 files changed, 4 insertions, 1 deletions
diff --git a/doc/environment_variables.md b/doc/environment_variables.md
index ed46a48e5e..15752ae865 100644
--- a/doc/environment_variables.md
+++ b/doc/environment_variables.md
@@ -47,9 +47,12 @@ some configuration as environment variables that can be set.
- combiner - traces combiner lock state
- compression - traces compression operations
- connectivity_state - traces connectivity state changes to channels
- - channel_stack_builder - traces information about channel stacks being built
- executor - traces grpc's internal thread pool ('the executor')
+ - fd_trace - traces fd create(), shutdown() and close() calls for channel fds.
+ Also traces epoll fd create()/close() calls in epollex polling engine
+ traces epoll-fd creation/close calls for epollex polling engine
- glb - traces the grpclb load balancer
+ - handshaker - traces handshaking state
- http - traces state in the http2 transport engine
- http2_stream_state - traces all http2 stream state mutations.
- http1 - traces HTTP/1.x operations performed by gRPC