syscall/getpid

Micro-benchmark measuring getpid system call round-trip latency.

Benchmark Profile

• Type: Micro

• Kernel subsystem: Syscall path, task metadata lookup

• Coverage: Directly measured

• Topology: Single role: executer

Overview

Measures the cost of invoking the getpid(2) syscall in a tight loop. A simple baseline for kernel entry/exit overhead, sensitive to spectre mitigations, syscall dispatch changes, and vDSO routing.

Fastpath Parameters

Name	Description
iterations	Number of syscall iterations per measurement. Mandatory.
syscall	Syscall to benchmark. Set to ‘getpid’ for this benchmark.

Result Classes

Single result class reporting latency in nanoseconds.

Fastpath Metadata

Field	Value
Suite	syscall
Name	getpid
Type	micro
Container Image	registry.gitlab.arm.com/tooling/fastpath/containers/microbench:v2.0
Documentation Path	documentation/user-guide/benchmarkcatalog/syscall-getpid.rst
Documentation URL	https://fastpath.docs.arm.com/user-guide/benchmarkcatalog/syscall-getpid.html