vbatts/llama.cpp
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metrics : add n_busy_slots_per_decode

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This commit is contained in:
Xuan Son Nguyen 2024-09-03 12:02:37 +02:00
parent fbebf65039
commit 69b398ce64
1 changed files with 27 additions and 0 deletions
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27
examples/server/server.cpp
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@ -354,6 +354,9 @@ struct server_metrics {
uint64_t n_tokens_predicted = 0;
uint64_t t_tokens_generation = 0;
uint64_t n_decode_total = 0;
uint64_t n_busy_slots_total = 0;
void init() {
t_start = ggml_time_us();
}
@ -372,6 +375,15 @@ struct server_metrics {
t_tokens_generation_total += slot.t_token_generation;
}
void on_decoded(const std::vector<server_slot> & slots) {
n_decode_total++;
for (const auto & slot : slots) {
if (slot.is_processing()) {
n_busy_slots_total++;
}
}
}
void reset_bucket() {
n_prompt_tokens_processed = 0;
t_prompt_processing = 0;
@ -1733,6 +1745,9 @@ struct server_context {
{ "n_tokens_predicted", metrics.n_tokens_predicted},
{ "t_tokens_generation", metrics.t_tokens_generation},
{ "n_decode_total", metrics.n_decode_total},
{ "n_busy_slots_total", metrics.n_busy_slots_total},
{ "kv_cache_tokens_count", llama_get_kv_cache_token_count(ctx)},
{ "kv_cache_used_cells", llama_get_kv_cache_used_cells(ctx)},
@ -2317,6 +2332,7 @@ struct server_context {
};
const int ret = llama_decode(ctx, batch_view);
metrics.on_decoded(slots);
if (ret != 0) {
if (n_batch == 1 || ret < 0) {
@ -2736,6 +2752,9 @@ int main(int argc, char ** argv) {
const uint64_t n_tokens_predicted = data.at("n_tokens_predicted");
const uint64_t t_tokens_generation = data.at("t_tokens_generation");
const uint64_t n_decode_total = data.at("n_decode_total");
const uint64_t n_busy_slots_total = data.at("n_busy_slots_total");
const int32_t kv_cache_used_cells = data.at("kv_cache_used_cells");
// metrics definition: https://prometheus.io/docs/practices/naming/#metric-names
@ -2756,6 +2775,14 @@ int main(int argc, char ** argv) {
{"name", "tokens_predicted_seconds_total"},
{"help", "Predict process time"},
{"value", (uint64_t) data.at("t_tokens_generation_total") / 1.e3}
}, {
{"name", "n_decode_total"},
{"help", "Total number of llama_decode() calls"},
{"value", n_decode_total}
}, {
{"name", "n_busy_slots_per_decode"},
{"help", "Average number of busy slots per llama_decode() call"},
{"value", (float) n_busy_slots_total / (float) n_decode_total}
}}},
{"gauge", {{
{"name", "prompt_tokens_seconds"},