Go GC: Latency Problem Solved Rick Hudson Google Engineer GopherCon Denver July 8, 2015 Google Confidential and Proprietary My Codefendants: The Cambridge Runtime Gang https://upload.wikimedia.o

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491 13. Problem acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478 13. Problem acknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 510 13. Problem acknowledgement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538 13 Problem acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 543 1 Problem suppression . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 626 13. Problem acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 586 13. Problem acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 543 13. Problem acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 548 1. Problem suppression . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 560 13 Problem acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 5 Receiving problem notification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539 13 Problem acknowledgment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 544 1 Problem suppression . . . . . . . . . . performed by server/proxy and by agents Flexible threshold definitions • you can define very flexible problem thresholds, called triggers, referencing values from the backend database Highly configurable alerting