Feature/Performance Counter

Overview

Samba's new Performance Counter infrastructure provides PDU based statistics for the Samba file server. Each incoming SMB creates a call to the generalized perfcount framework, from which a backend module can track PDU type, size, latency, and user.

Two backend modules are currently implemented.

Components

Component	Description	Developer	Status
SMBD Infrastructure	Implement a dispatch table API which different backends can plug into.	tstecher	Completed
perfcount_onefs.so	A module specific to the OneFS operating system which makes syscalls storing aggregate SMB performance measurements in kernel memory. These statistics are later retrieved via a command line tool.	tstecher	Completed
perfcount_test.so	A simple module which writes packet data out to the samba.log file every 50 operations.	tstecher	Completed

Implementation

File Server Infrastructure

source3/smbd/perfcount.c

Backend Modules

source3/modules/perfcount_onefs.c

source3/modules/perfcount_test.c

Future Development

• Implement a more generic Unix backend which logs to a database.
• Integrate with Holger's SMB Traffic Analyzer backend and CLI tools.
• Remove deprecated START_PROFILE()/END_PROFILE() subsystem