[perfomance] section¶

Metrics service configuration

default_hist¶

Default value: [0.001, 0.005, 0.01, 0.05, 0.5, 1.0, 5.0, 10.0]
YAML Path: perfomance.default_hist
Key-value Path: perfomance/default_hist
Environment: NOC_PERFOMANCE_DEFAULT_HIST

enable_mongo_hist¶

YAML Path: perfomance.enable_mongo_hist
Key-value Path: perfomance/enable_mongo_hist
Environment: NOC_PERFOMANCE_ENABLE_MONGO_HIST

mongo_hist¶

Default value: [0.001, 0.005, 0.01, 0.05, 0.5, 1.0, 5.0, 10.0]
YAML Path: perfomance.mongo_hist
Key-value Path: perfomance/mongo_hist
Environment: NOC_PERFOMANCE_MONGO_HIST

enable_postgres_hist¶

YAML Path: perfomance.enable_postgres_hist
Key-value Path: perfomance/enable_postgres_hist
Environment: NOC_PERFOMANCE_ENABLE_POSTGRES_HIST

postgres_hist¶

Default value: [0.001, 0.005, 0.01, 0.05, 0.5, 1.0, 5.0, 10.0]
YAML Path: perfomance.postgres_hist
Key-value Path: perfomance/postgres_hist
Environment: NOC_PERFOMANCE_POSTGRES_HIST

default_quantiles¶

Default value: [0.5, 0.9, 0.95]
YAML Path: perfomance.default_quantiles
Key-value Path: perfomance/default_quantiles
Environment: NOC_PERFOMANCE_DEFAULT_QUANTILES

default_quantiles_epsilon¶

Acceptable ranking error for approximate quantiles calculation.

Consider we have 1000 measurements and calculating 2-nd quartile (50% or 0.5). Exact quantile calculation must return 1000 * 0.5 = 500 item of ordered list of measurement but we need to keep all 1000 measurements in memory.

Approximate quantiles calculation guaranted to return an item between 1000 * (0,5 - Epsilon) and 1000 * (0.5 + Epsilon). So for default value of 0.01 value between490and510` position will be returned, greatly relaxing memory requirements.

Lesser values means greater precision and greater memory and cpu requirements, while greater values means lesser precision but lesser memory and cpu penalty.

Note

This parameter is read-only and cannot be modified

default_quantiles_window¶

Quantiles window size in seconds. NOC maintains 2 quantile windows - temporary and active one, purging active and swapping windows every default_quantiles_window seconds.

Note

This parameter is read-only and cannot be modified

default_quantiles_buffer¶

Note

This parameter is read-only and cannot be modified

enable_mongo_quantiles¶

Enable quantiles collection for mongo transactions

YAML Path: perfomance.enable_mongo_quantiles
Key-value Path: perfomance/enable_mongo_quantiles
Environment: NOC_PERFOMANCE_ENABLE_MONGO_QUANTILES

enable_postgres_quantiles¶

Enable quantiles collection for postgresql transactions

YAML Path: perfomance.enable_postgres_quantiles
Key-value Path: perfomance/enable_postgres_quantiles
Environment: NOC_PERFOMANCE_ENABLE_POSTGRES_QUANTILES