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[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