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(fix) use weighted shuffle when rpm set

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ishaan-jaff 2023-11-29 17:13:11 -08:00
parent 38efc21f81
commit 088d2bc081
1 changed files with 14 additions and 22 deletions
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36
litellm/router.py
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@ -71,7 +71,7 @@ class Router:
fallbacks: List = [],
allowed_fails: Optional[int] = None,
context_window_fallbacks: List = [],
routing_strategy: Literal["simple-shuffle", "least-busy", "usage-based-routing", "latency-based-routing", "weighted-shuffle"] = "simple-shuffle") -> None:
routing_strategy: Literal["simple-shuffle", "least-busy", "usage-based-routing", "latency-based-routing"] = "simple-shuffle") -> None:
self.set_verbose = set_verbose
if model_list:
@ -106,15 +106,6 @@ class Router:
### HEALTH CHECK THREAD ###
if self.routing_strategy == "least-busy":
self._start_health_check_thread()
if self.routing_strategy == "simple-shuffle":
# use rpm based shuffle if user provided values of rpm
try:
rpm = self.model_list[0]["litellm_params"].get("rpm", None)
if rpm is not None:
self.routing_strategy = "weighted-shuffle"
except:
pass
### CACHING ###
redis_cache = None
if redis_host is not None and redis_port is not None and redis_password is not None:
@ -936,20 +927,21 @@ class Router:
else:
raise ValueError("No models available.")
elif self.routing_strategy == "simple-shuffle":
rpm = healthy_deployments[0].get("litellm_params").get("rpm", None)
if rpm is not None:
# use weight-random pick if rpms provided
rpms = [m["litellm_params"].get("rpm") for m in healthy_deployments]
self.print_verbose(f"\nrpms {rpms}")
total_rpm = sum(rpms)
weights = [rpm / total_rpm for rpm in rpms]
self.print_verbose(f"\n weights {weights}")
# Perform weighted random pick
selected_index = random.choices(range(len(rpms)), weights=weights)[0]
self.print_verbose(f"\n selected index, {selected_index}")
deployment = healthy_deployments[selected_index]
return deployment or deployment[0]
item = random.choice(healthy_deployments)
return item or item[0]
elif self.routing_strategy == "weighted-shuffle":
rpms = [m["litellm_params"].get("rpm") for m in healthy_deployments]
self.print_verbose(f"\nrpms {rpms}")
total_rpm = sum(rpms)
weights = [rpm / total_rpm for rpm in rpms]
self.print_verbose(f"\n weights {weights}")
# Perform weighted random pick
selected_index = random.choices(range(len(rpms)), weights=weights)[0]
self.print_verbose(f"\n selected index, {selected_index}")
deployment = healthy_deployments[selected_index]
return deployment or deployment[0]
elif self.routing_strategy == "latency-based-routing":
returned_item = None
lowest_latency = float('inf')