add estimated wait time and other time tracking stats

llm_server/routes/queue.py

@@ -1,7 +1,9 @@
 import heapq
 import threading
+import time
 
 from llm_server.llm.generator import generator
+from llm_server.routes.stats import generation_elapsed, generation_elapsed_lock
 
 
 class PriorityQueue:
@@ -40,7 +42,14 @@ class DataEvent(threading.Event):
 def worker():
     while True:
         priority, index, (request_json_body, client_ip, token, parameters), event = priority_queue.get()
+        start_time = time.time()
         success, response, error_msg = generator(request_json_body)
+
+        end_time = time.time()
+        elapsed_time = end_time - start_time
+        with generation_elapsed_lock:
+            generation_elapsed.append((end_time, elapsed_time))
+
         event.data = (success, response, error_msg)
         event.set()
 

llm_server/routes/stats.py

@@ -1,13 +1,55 @@
 import time
 from datetime import datetime
-from threading import Semaphore, Thread
+from threading import Lock, Thread
 
-from llm_server.opts import concurrent_gens
 from llm_server.routes.cache import redis
 
 # proompters_1_min = 0
-concurrent_semaphore = Semaphore(concurrent_gens)
+# concurrent_semaphore = Semaphore(concurrent_gens)
-start_time = datetime.now()
+server_start_time = datetime.now()
+
+# TODO: have a background thread put the averages in a variable so we don't end up with massive arrays
+
+wait_in_queue_elapsed = []
+wait_in_queue_elapsed_lock = Lock()
+
+generation_elapsed = []
+generation_elapsed_lock = Lock()
+
+
+def elapsed_times_cleanup():
+    global wait_in_queue_elapsed
+    while True:
+        current_time = time.time()
+        with wait_in_queue_elapsed_lock:
+            global wait_in_queue_elapsed
+            wait_in_queue_elapsed = [(end_time, elapsed_time) for end_time, elapsed_time in wait_in_queue_elapsed if current_time - end_time <= 60]
+        time.sleep(1)
+
+
+def calculate_avg_gen_time():
+    # Get the average generation time from Redis
+    average_generation_time = redis.get('average_generation_time')
+    if average_generation_time is None:
+        return 0
+    else:
+        return float(average_generation_time)
+
+
+def process_avg_gen_time():
+    while True:
+        with generation_elapsed_lock:
+            # Get the data from the last minute
+            one_minute_ago = time.time() - 60
+            recent_data = [elapsed for end, elapsed in generation_elapsed if end >= one_minute_ago]
+
+        # Calculate the average
+        if len(recent_data) == 0:
+            average_generation_time = 0
+        else:
+            average_generation_time = sum(recent_data) / len(recent_data)
+        redis.set('average_generation_time', average_generation_time)
+        time.sleep(5)
 
 
 def get_count():

llm_server/routes/v1/generate.py

@@ -3,7 +3,7 @@ import time
 
 from flask import jsonify, request
 
-from llm_server.routes.stats import SemaphoreCheckerThread, concurrent_semaphore
+from llm_server.routes.stats import SemaphoreCheckerThread, wait_in_queue_elapsed, wait_in_queue_elapsed_lock
 from . import bp
 from ..cache import redis
 from ..helpers.client import format_sillytavern_err
@@ -18,11 +18,11 @@ DEFAULT_PRIORITY = 9999
 
 @bp.route('/generate', methods=['POST'])
 def generate():
+    start_time = time.time()
     request_valid_json, request_json_body = validate_json(request.data)
     if not request_valid_json:
         return jsonify({'code': 400, 'error': 'Invalid JSON'}), 400
 
-    with concurrent_semaphore:
     if request.headers.get('cf-connecting-ip'):
         client_ip = request.headers.get('cf-connecting-ip')
     elif request.headers.get('x-forwarded-for'):
@@ -56,6 +56,13 @@ def generate():
     event.wait()
     success, response, error_msg = event.data
 
+    # Add the elapsed time to a global list
+    end_time = time.time()
+    elapsed_time = end_time - start_time
+    # print('elapsed:', elapsed_time)
+    with wait_in_queue_elapsed_lock:
+        wait_in_queue_elapsed.append((end_time, elapsed_time))
+
     if not success:
         if opts.mode == 'oobabooga':
             backend_response = format_sillytavern_err(f'Failed to reach the backend ({opts.mode}): {error_msg}', 'error')
@@ -68,6 +75,7 @@ def generate():
             }
         else:
             raise Exception
+
         log_prompt(opts.database_path, client_ip, token, request_json_body['prompt'], backend_response, parameters, dict(request.headers), response.status_code)
         return jsonify({
             'code': 500,

llm_server/routes/v1/proxy.py

@@ -4,11 +4,10 @@ from datetime import datetime
 from flask import jsonify, request
 
 from llm_server import opts
-from llm_server.routes.v1.generate import concurrent_semaphore
 from . import bp
 from .. import stats
-from ..cache import cache
+from ..queue import priority_queue
-from ..stats import SemaphoreCheckerThread
+from ..stats import SemaphoreCheckerThread, calculate_avg_gen_time
 from ...llm.info import get_running_model
 
 
@@ -21,12 +20,22 @@ def get_stats():
     else:
         online = True
 
+    # t = elapsed_times.copy()  # copy since we do multiple operations and don't want it to change
+    # if len(t) == 0:
+    #     estimated_wait = 0
+    # else:
+    #     waits = [elapsed for end, elapsed in t]
+    #     estimated_wait = int(sum(waits) / len(waits))
+
+    average_generation_time = int(calculate_avg_gen_time())
+
     return jsonify({
         'stats': {
-            'proompters_now': opts.concurrent_gens - concurrent_semaphore._value,
+            'prompts_in_queue': len(priority_queue),
             'proompters_1_min': SemaphoreCheckerThread.proompters_1_min,
             'total_proompts': stats.get_count(),
-            'uptime': int((datetime.now() - stats.start_time).total_seconds()),
+            'uptime': int((datetime.now() - stats.server_start_time).total_seconds()),
+            'average_generation_elapsed_sec': average_generation_time,
         },
         'online': online,
         'mode': opts.mode,
@@ -34,6 +43,7 @@ def get_stats():
         'endpoints': {
             'blocking': f'https://{request.headers.get("Host")}/{opts.frontend_api_client.strip("/")}',
         },
+        'estimated_wait_sec': int(average_generation_time * len(priority_queue)),
         'timestamp': int(time.time()),
         'openaiKeys': '∞',
         'anthropicKeys': '∞',

server.py

@@ -1,6 +1,7 @@
 import os
 import sys
 from pathlib import Path
+from threading import Thread
 
 from flask import Flask, jsonify
 
@@ -11,7 +12,7 @@ from llm_server.helpers import resolve_path
 from llm_server.routes.cache import cache
 from llm_server.routes.helpers.http import cache_control
 from llm_server.routes.queue import start_workers
-from llm_server.routes.stats import SemaphoreCheckerThread, concurrent_semaphore
+from llm_server.routes.stats import SemaphoreCheckerThread, elapsed_times_cleanup, process_avg_gen_time
 from llm_server.routes.v1 import bp
 
 script_path = os.path.dirname(os.path.realpath(__file__))
@@ -56,6 +57,13 @@ if not opts.verify_ssl:
 
 start_workers(opts.concurrent_gens)
 
+# cleanup_thread = Thread(target=elapsed_times_cleanup)
+# cleanup_thread.daemon = True
+# cleanup_thread.start()
+# Start the background thread
+process_avg_gen_time_background_thread = Thread(target=process_avg_gen_time)
+process_avg_gen_time_background_thread.daemon = True
+process_avg_gen_time_background_thread.start()
 SemaphoreCheckerThread().start()
 
 app = Flask(__name__)