# GO 1

This page describes the Optimization Pack for the component type Go 1.

## Metrics

<table><thead><tr><th>Metric</th><th width="139">Unit</th><th width="299.3333333333333">Description</th></tr></thead><tbody><tr><td>cpu_used</td><td>CPUs</td><td>The total amount of CPUs used</td></tr><tr><td>cpu_util</td><td>percents</td><td>The average CPU utilization % across all the CPUs (i.e., how much time on average the CPUs are busy doing work)</td></tr><tr><td>go_heap_size</td><td>bytes</td><td>The largest size reached by the Go heap memory</td></tr><tr><td>go_heap_used</td><td>bytes</td><td>The amount of heap memory used</td></tr><tr><td>go_heap_util</td><td>bytes</td><td>The amount of heap memory used</td></tr><tr><td>go_memory_used</td><td>bytes</td><td>The total amount of memory used by Go</td></tr><tr><td>go_gc_time</td><td>percent</td><td>The % of wall clock time the Go spent doing stop the world garbage collection activities</td></tr><tr><td>go_gc_duration</td><td>seconds</td><td>The average duration of a stop the world Go garbage collection</td></tr><tr><td>go_gc_count</td><td>collections/s</td><td>The total number of stop the world Go garbage collections that have occurred per second</td></tr><tr><td>go_threads_current</td><td>threads</td><td>The total number of active Go threads</td></tr><tr><td>go_goroutines_current</td><td>goroutines</td><td>The total number of active Goroutines</td></tr></tbody></table>

## Parameters

<table><thead><tr><th width="264">Parameter</th><th width="118">Type</th><th width="98">Unit</th><th width="106">Default</th><th width="119">Domain</th><th width="95">Restart</th><th width="297">Description</th></tr></thead><tbody><tr><td>go_gcTargetPercentage</td><td>integer</td><td></td><td><code>100</code></td><td><code>0</code> → <code>25000</code></td><td>yes</td><td>Sets the GOGC variable which controls the aggressiveness of the garbage collector</td></tr><tr><td>go_maxProcs</td><td>integer</td><td></td><td><code>8</code></td><td><code>0</code> → <code>100</code></td><td>yes</td><td>Limits the number of operating system threads that can execute user-level code simultaneously</td></tr></tbody></table>