Environment Variable Rationalization

Runtime SIMA_* variables referenced by code are classified into four buckets to reduce configuration sprawl. Each variable appears exactly once in the lists below.

Totals

• Runtime SIMA_* variables found in src/ + include/: 148
• Retired in this pass: 6
• Unify (collapse into fewer debug profiles): 47
• Framework knob (promote to typed API options): 34
• Keep as-is (developer diagnostics / platform setup): 67

Retired in this pass

These were scaffolding, no-op, or legacy override paths and have now been removed from runtime code.

• SIMA_BOXDECODE_WIRE_DEBUG
• SIMA_DETESS_MULTI_BUFFER
• SIMA_FORCE_POOL_RELEASE
• SIMA_GUARD_TEST_HOLD_MS
• SIMA_MLA_CONFIG_DEBUG
• SIMA_SYNC_RUN_NUM_BUFFERS

Unify

These are largely overlapping debug toggles and should be collapsed behind a smaller set of debug profiles/levels. This is now implemented via SIMA_DEBUG_PROFILE + SIMA_DEBUG_LEVEL as a default/fallback layer.

• SIMA_APPSINK_CAPS_DEBUG
• SIMA_APPSINK_CB_DEBUG
• SIMA_APPSINK_DROP_LAST_DEBUG
• SIMA_APPSINK_LAST_SAMPLE_DEBUG
• SIMA_APPSINK_PULL_DEBUG
• SIMA_BUILD_MODE_DEBUG
• SIMA_DEBUG_INPUT_POOL
• SIMA_DISPATCHER_TRACE
• SIMA_GRAPH_DEBUG
• SIMA_GRAPH_DIAG_ON_STOP
• SIMA_GRAPH_PUSH_FAIL_DEBUG
• SIMA_GRAPH_SCHED_DEBUG
• SIMA_GRAPH_SCHED_LOG_EVERY
• SIMA_GRAPH_SCHED_LOG_FIRST_STREAM
• SIMA_GRAPH_TEARDOWN_DEBUG
• SIMA_GST_ALL_BUFFER_DEBUG
• SIMA_GST_APPSINK_BUFFER_DEBUG
• SIMA_GST_BOUNDARY_BUFFER_DEBUG
• SIMA_GST_BOXDECODE_BUFFER_DEBUG
• SIMA_GST_BUFFER_DEBUG_LIMIT
• SIMA_GST_DETESS_INPUT_DEBUG
• SIMA_GST_DETESS_OUTPUT_DEBUG
• SIMA_GST_DETESS_POOL_DEBUG
• SIMA_GST_ELEMENT_BUFFER_DEBUG
• SIMA_GST_ELEMENT_BUFFER_DEBUG_DIR
• SIMA_GST_PAD_LINK_DEBUG
• SIMA_INPUTSTREAM_ALLOC_DEBUG
• SIMA_INPUTSTREAM_DEBUG
• SIMA_INPUTSTREAM_DOT_ON_TIMEOUT
• SIMA_INPUTSTREAM_EOS_DEBUG
• SIMA_INPUTSTREAM_HOLDER_DEBUG
• SIMA_INPUTSTREAM_META_DEBUG
• SIMA_INPUTSTREAM_POOL_DEBUG
• SIMA_INPUTSTREAM_POOL_WAIT_LOG_MS
• SIMA_INPUTSTREAM_PUSH_FAIL_DEBUG
• SIMA_INPUTSTREAM_PUSH_FAIL_DETAIL
• SIMA_INPUTSTREAM_PUSH_REF_DEBUG
• SIMA_INPUTSTREAM_PUSH_TIMING
• SIMA_INPUTSTREAM_USE_APPSINK_CALLBACKS
• SIMA_INPUTSTREAM_WARN
• SIMA_INPUTSTREAM_WEAKREF_DEBUG
• SIMA_PIPELINE_DEBUG
• SIMA_PIPELINE_STATE_DEBUG
• SIMA_PIPELINE_STRING_DEBUG
• SIMA_PIPELINE_TEARDOWN_DEBUG
• SIMA_STAGE_DEBUG
• SIMA_STOP_TRACE

Framework knob

These are behavioral controls that should be first-class typed options on Session/Run/Graph/Node APIs.

• SIMA_APPSRC_DEFAULT_MAX_BUFFERS
• SIMA_CLAMP_DETESS_NUM_BUFFERS
• SIMA_DETESS_FORCE_CPU_OUT
• SIMA_DISABLE_SYNC_NUMBUFFERS_CVU_MLA
• SIMA_ENABLE_ASYNC_QUEUE2
• SIMA_FORCE_DECODER_NUM_BUFFERS
• SIMA_FORCE_DECODER_POOL_BUFFERS
• SIMA_FORCE_MODEL_NUM_BUFFERS
• SIMA_GRAPH_BUILD_TIMEOUT_MS
• SIMA_GRAPH_OUTPUT_RATE_MS
• SIMA_GRAPH_STOP_TIMEOUT_MS
• SIMA_GRAPH_ZERO_COPY_BACKPRESSURE_CAP
• SIMA_GRAPH_ZERO_COPY_MAX_INFLIGHT
• SIMA_GST_POLL_SLICE_MS
• SIMA_GST_RUN_INPUT_TIMEOUT_MS
• SIMA_GST_TEARDOWN_ASYNC
• SIMA_GST_TEARDOWN_DEFER_NO_FLUSH
• SIMA_GST_TEARDOWN_REAPER_MS
• SIMA_GST_TEARDOWN_TIMEOUT_MS
• SIMA_GST_VALIDATE_TIMEOUT_MS
• SIMA_H264ENC_BITRATE_KBPS
• SIMA_H264ENC_LOSSLESS
• SIMA_H264ENC_QP
• SIMA_H264_SDP_DUMP
• SIMA_H264_SPS_FIXUP_STREAM
• SIMA_IMAGEFREEZE_MIN_BUFFERS
• SIMA_INPUTSTREAM_ELASTIC_MAX_MB
• SIMA_INPUTSTREAM_HOLDER_MAX_INFLIGHT
• SIMA_INPUTSTREAM_POLL_MS
• SIMA_PIPELINE_DRAIN_BEFORE_TEARDOWN_MS
• SIMA_PIPELINE_DRAIN_MIN_OUTPUTS
• SIMA_RTSP_ALLOW_BACKPRESSURE
• SIMA_RTSP_STOP_TIMEOUT_MS
• SIMA_STATE_CHANGE_TIMEOUT_MS

Keep as-is

These are still useful directly as env vars for diagnostics, plugin bootstrap, and low-level bring-up.

• SIMA_ALLOW_GST_INIT
• SIMA_ASYNC_TPUT_DIAG
• SIMA_ASYNC_WARMUP
• SIMA_DEBUG_LEVEL
• SIMA_DEBUG_PROFILE
• SIMA_DETESS_ASSERT_ON_ZERO
• SIMA_DETESS_ZERO_COPY
• SIMA_DISPATCHER_WATCHDOG
• SIMA_DISPATCHER_WATCHDOG_PATH
• SIMA_FIRST_FRAME_STREAMS
• SIMA_GRAPH_GDB_ON_PUSH_FAIL
• SIMA_GRAPH_IDENTITY_MAP_CAPACITY
• SIMA_GRAPH_OUTPUT_COPY_DEBUG
• SIMA_GRAPH_PIPELINE_DIAG_MS
• SIMA_GRAPH_PIPELINE_DIAG_SUMMARY
• SIMA_GRAPH_SERIAL_PIPELINE_BUILD
• SIMA_GRAPH_ZERO_COPY_DEBUG
• SIMA_GST_ALLOW_SYSTEM_ALLOCATOR
• SIMA_GST_ALLOW_SYSTEM_PLUGINS
• SIMA_GST_BOUNDARY_PROBES
• SIMA_GST_BUFFER_MEMFLAGS_DEBUG
• SIMA_GST_DATA_ADAPTER_DEBUG
• SIMA_GST_DOT_DIR
• SIMA_GST_ELEMENT_TIMINGS
• SIMA_GST_ENFORCE_NAMES
• SIMA_GST_FLOW_DEBUG
• SIMA_GST_NEAT_ONLY
• SIMA_GST_OPTIONS_DEBUG
• SIMA_GST_PLUGIN_DIR
• SIMA_GST_PLUGIN_PATH_DEBUG
• SIMA_GST_RUN_INSERT_BOUNDARIES
• SIMA_GST_STAGE_TIMINGS
• SIMA_GST_SUPPRESS_DEVICE_LOGS
• SIMA_GST_SUPPRESS_GOBJECT_ASSERTS
• SIMA_GST_SUPPRESS_JSON_WARNINGS
• SIMA_GST_SUPPRESS_SEGMENT_WARNINGS
• SIMA_GST_WRAP_SCANNER
• SIMA_GST_ZERO_COPY_WRITABLE_VIEW
• SIMA_INPUTSTREAM_CB_STOP_TIMEOUT_MS
• SIMA_INPUTSTREAM_DROP_HOLDER_AFTER_PUSH
• SIMA_INPUTSTREAM_PREFLIGHT_RUN
• SIMA_INPUTSTREAM_STOP_FLUSH
• SIMA_INPUTSTREAM_STOP_FLUSH_TIMEOUT_MS
• SIMA_INPUTSTREAM_STOP_TIMEOUT_MS
• SIMA_INPUTSTREAM_STOP_UNBLOCK
• SIMA_INPUTSTREAM_UNREF_ON_PUSH_FAIL
• SIMA_KEEP_DETESS_CONFIG
• SIMA_MANIFEST_DEBUG
• SIMA_MLA_NEXT_CPU
• SIMA_MLA_NUM_BUFFERS_DEBUG
• SIMA_MPK_CLEANUP_EXTRACTED
• SIMA_MPK_EXTRACT_GC_STALE_PROC
• SIMA_MPK_EXTRACT_ROOT
• SIMA_NEATENCODER_DUMP_CNT
• SIMA_NEATENCODER_DUMP_PATH
• SIMA_NEAT_CAPS_TRACE
• SIMA_PIPELINE_ABORT_ON_HUNG_STOP_THREADS
• SIMA_PIPELINE_OUTPUT_DROP_ON_ZERO_COPY
• SIMA_PIPELINE_PUSH_RETURN_DEBUG
• SIMA_PREPROC_DEBUG_CONFIG
• SIMA_PULL_TIMEOUT_DIAG
• SIMA_PULL_TIMEOUT_POOL_DIAG
• SIMA_RTSP_DEBUG
• SIMA_RTSP_STATS_DEBUG
• SIMA_RTSP_STATS_POLL_MS
• SIMA_SAMPLE_BYTES
• SIMA_SAMPLE_DEBUG
• SIMA_SAMPLE_FORCE_BUNDLE
• SIMA_TENSOR_MAPFAIL_DEBUG