feat: added logging instrumentation for tenant preprocessing param

Author: emil916

runtime/include/execution_regression.h

@@ -11,7 +11,7 @@ get_regression_prediction(struct http_session *session)
 	/* Default Pre-processing - Extract payload size */
 	const int payload_size = session->http_request.body_length;
 
-	const double regression_params[2] = {payload_size, session->paregression_paramram2};
+	const double regression_params[2] = {payload_size, session->regression_param};
 
 	/* Perform Linear Regression using the factors provided by the regressor performed AoT on Matlab using training
 	 * tenant-given dataset */
@@ -23,4 +23,4 @@ get_regression_prediction(struct http_session *session)
 	return prediction;
 }
 
-#endif
+#endif

runtime/include/sandbox_perf_log.h

@@ -13,9 +13,10 @@ static inline void
 sandbox_perf_log_print_header()
 {
 	if (sandbox_perf_log == NULL) { perror("sandbox perf log"); }
-	fprintf(sandbox_perf_log, "id,tenant,route,state,deadline,actual,queued,uninitialized,allocated,initialized,"
-	                          "runnable,interrupted,preempted,"
-	                          "running_sys,running_user,asleep,returned,complete,error,proc_MHz,payload_size\n");
+	fprintf(sandbox_perf_log,
+	        "id,tenant,route,state,deadline,actual,queued,uninitialized,allocated,initialized,"
+	        "runnable,interrupted,preempted,"
+	        "running_sys,running_user,asleep,returned,complete,error,proc_MHz,payload_size,regression_param\n");
 }
 
 /**
@@ -37,16 +38,17 @@ sandbox_perf_log_print_entry(struct sandbox *sandbox)
 	 * seperately from current linear memory size.
 	 */
 	fprintf(sandbox_perf_log,
-	        "%lu,%s,%s,%s,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%u,%u,%d,%d\n", sandbox->id,
-	        sandbox->tenant->name, sandbox->route->route, sandbox_state_stringify(sandbox->state),
+	        "%lu,%s,%s,%s,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%lu,%u,%u,%d,%d,%lf\n",
+	        sandbox->id, sandbox->tenant->name, sandbox->route->route, sandbox_state_stringify(sandbox->state),
 	        sandbox->route->relative_deadline, sandbox->total_time, queued_duration,
 	        sandbox->duration_of_state[SANDBOX_UNINITIALIZED], sandbox->duration_of_state[SANDBOX_ALLOCATED],
 	        sandbox->duration_of_state[SANDBOX_INITIALIZED], sandbox->duration_of_state[SANDBOX_RUNNABLE],
 	        sandbox->duration_of_state[SANDBOX_INTERRUPTED], sandbox->duration_of_state[SANDBOX_PREEMPTED],
 	        sandbox->duration_of_state[SANDBOX_RUNNING_SYS], sandbox->duration_of_state[SANDBOX_RUNNING_USER],
 	        sandbox->duration_of_state[SANDBOX_ASLEEP], sandbox->duration_of_state[SANDBOX_RETURNED],
 	        sandbox->duration_of_state[SANDBOX_COMPLETE], sandbox->duration_of_state[SANDBOX_ERROR],
-	        runtime_processor_speed_MHz, sandbox->response_code, 0, sandbox->payload_size);
+	        runtime_processor_speed_MHz, sandbox->response_code, 0, sandbox->payload_size,
+	        sandbox->regression_param);
 }
 
 static inline void

runtime/include/sandbox_types.h

@@ -68,6 +68,7 @@ struct sandbox {
 	                                 deadline (cycles) */
 	uint64_t total_time;          /* Total time from Request to Response */
 	int      payload_size;
+	double   regression_param; /* Calculated in tenant preprocessing logic if provided */
 
 	/* System Interface State */
 	int32_t         return_value;

runtime/src/sandbox.c

@@ -155,6 +155,7 @@ sandbox_init(struct sandbox *sandbox, struct module *module, struct http_session
 
 	sandbox->absolute_deadline = sandbox->timestamp_of.allocation + sandbox->route->relative_deadline;
 	sandbox->payload_size      = session->http_request.body_length;
+	sandbox->regression_param  = session->regression_param;
 
 	/*
 	 * Admissions Control State

tests/bash_libraries/experiment_globals.sh

@@ -40,7 +40,8 @@ declare -gr SANDBOX_ROUTE_FIELD=3
 declare -gr SANDBOX_CPU_FREQ_FIELD=20
 declare -gr SANDBOX_RESPONSE_CODE_FIELD=21
 declare -gr SANDBOX_GUARANTEE_TYPE_FIELD=22
-declare -gr SANDBOX_PAYLOAD_SIZE=23
+# declare -gr SANDBOX_PAYLOAD_SIZE=23
+# declare -gr SANDBOX_REGRESSION_PARAM=24
 
 # HTTP Session Perf Log Globals:
 declare  -ga HTTP_METRICS=(http_receive http_sent http_total http_preprocess)

tests/multi-tenancy-predictions/run.sh

@@ -33,7 +33,6 @@ declare -r GET_JPEG_RESOLUTION="get_jpeg_resolution.wasm.so"
 
 # Per route configs:
 declare -ar WASM_PATHS=("$CNN" "$CIFAR10" "$GOCR" "$LPD" "$RESIZE" "$EKF")
-declare -ar WASM_PATHS_PREPROCESSING=("$GET_JPEG_RESOLUTION" "$GET_JPEG_RESOLUTION" "$GET_JPEG_RESOLUTION" "$GET_JPEG_RESOLUTION" "$NONE")
 declare -ar RESP_CONTENT_TYPES=("text/plain" "text/plain" "text/plain" "text/plain" "image/jpeg" "application/octet-stream")
 declare -ar EXPECTED_EXEC_TIMES_us=("600000" "4000" "8900" "16700" "62000" "30")
 declare -ar DEADLINE_TO_EXEC_RATIOs=("500" "500" "500" "500" "500" "5000") # percentage