[MIRROR] performance logging (#1629)

* performance logging (#54809)

Dumps a bunch of perf info to a csv every 10 seconds.

Currently this info is only stored in blackbox where it's effectively useless.
csv is a very easy to parse format and is natively supported by a lot of data analysis tools

* performance logging

Co-authored-by: Rob Bailey <actioninja@gmail.com>

code/__HELPERS/_logging.dm

@@ -202,6 +202,9 @@
 /proc/log_mapping(text)
 	WRITE_LOG(GLOB.world_map_error_log, text)
 
+/proc/log_perf(list/perf_info)
+	WRITE_LOG_NO_FORMAT(GLOB.perf_log, perf_info.Join(","))
+
 /**
  * Appends a tgui-related log entry. All arguments are optional.
  */

code/_globalvars/logging.dm

@@ -45,6 +45,9 @@ GLOBAL_PROTECT(tgui_log)
 GLOBAL_VAR(world_shuttle_log)
 GLOBAL_PROTECT(world_shuttle_log)
 
+GLOBAL_VAR(perf_log)
+GLOBAL_PROTECT(perf_log)
+
 GLOBAL_VAR(demo_log)
 GLOBAL_PROTECT(demo_log)
 

code/controllers/subsystem/time_track.dm

@@ -37,3 +37,28 @@ SUBSYSTEM_DEF(time_track)
 	last_tick_byond_time = current_byondtime
 	last_tick_tickcount = current_tickcount
 	SSblackbox.record_feedback("associative", "time_dilation_current", 1, list("[SQLtime()]" = list("current" = "[time_dilation_current]", "avg_fast" = "[time_dilation_avg_fast]", "avg" = "[time_dilation_avg]", "avg_slow" = "[time_dilation_avg_slow]")))
+	log_perf(
+		list(
+			world.time,
+			length(GLOB.clients),
+			time_dilation_current,
+			time_dilation_avg_fast,
+			time_dilation_avg,
+			time_dilation_avg_slow,
+			MAPTICK_LAST_INTERNAL_TICK_USAGE,
+			length(SStimer.timer_id_dict),
+			SSair.cost_turfs,
+			SSair.cost_groups,
+			SSair.cost_highpressure,
+			SSair.cost_hotspots,
+			SSair.cost_superconductivity,
+			SSair.cost_pipenets,
+			SSair.cost_rebuilds,
+			length(SSair.active_turfs),
+			length(SSair.excited_groups),
+			length(SSair.hotspots),
+			length(SSair.networks),
+			length(SSair.high_pressure_delta),
+			length(SSair.active_super_conductivity)
+		)
+	)

code/game/world.dm

@@ -144,6 +144,7 @@ GLOBAL_VAR(restart_counter)
 	GLOB.world_paper_log = "[GLOB.log_directory]/paper.log"
 	GLOB.tgui_log = "[GLOB.log_directory]/tgui.log"
 	GLOB.world_shuttle_log = "[GLOB.log_directory]/shuttle.log"
+	GLOB.perf_log = "[GLOB.log_directory]/perf.csv"
 
 	GLOB.demo_log = "[GLOB.log_directory]/demo.log"
 
@@ -163,6 +164,31 @@ GLOBAL_VAR(restart_counter)
 	start_log(GLOB.world_job_debug_log)
 	start_log(GLOB.tgui_log)
 	start_log(GLOB.world_shuttle_log)
+	log_perf(
+		list(
+			"time",
+			"players",
+			"tidi",
+			"tidi_fastavg",
+			"tidi_avg",
+			"tidi_slowavg",
+			"maptick",
+			"num_timers",
+			"air_turf_cost",
+			"air_eg_cost",
+			"air_highpressure_cost",
+			"air_hotspots_cost",
+			"air_superconductivity_cost",
+			"air_pipenets_cost",
+			"air_rebuilds_cost",
+			"air_turf_count",
+			"air_eg_count",
+			"air_hotspot_count",
+			"air_network_count",
+			"air_delta_count",
+			"air_superconductive_count"
+		)
+	)
 
 	GLOB.changelog_hash = md5('html/changelog.html') //for telling if the changelog has changed recently
 	if(fexists(GLOB.config_error_log))