DS-5
Streamline Performance Analyzer
Overview
The growing need for high-performance and energy-efcient
consumer products has changed the shape of embedded systems
and consequently the requirements of software developers.
The ARM® Development Studio 5 (DS-5™) toolchain, through its
ARM Streamline™ Performance Analyzer component, delivers a
simple and intuitive way to analyze and optimize complex Linux and
Android™ based platforms.
ARM Mali GPU Support
The Streamline Performance Analyzer gives you visibility of
performance data across the Cortex processor and Mali GPU, so
that bottlenecks on either side can be easily spotted. It enables
developers to easily balance the overall computing load to make
efcient usage of system resources.
Key Features and Benets
• Locate ARM application processor hotspots at process, thread
and source code level
• Analyze the efciency of parallel code on multicore platforms
• Find and optimize bottlenecks across Cortex processors and
ARM Mali™ GPUs
• Zero-in on the top functions causing performance-penalty events
(e.g. cache misses, and branch mispredictions)
• Improve energy efciency with actual power measurement data
• Long term data capture over TCP/IP interface
• Simultaneous analysis of multiple applications.
Timeline Analysis
Collected data is displayed on a timeline that enables viewing of
software and system-level activity over time. This helps to identify
performance issues that arise from the interaction of the software
with the hardware blocks on the SoC.
Key features:
• Multicore-aware performance charts, process and thread activity,
and instrumented annotations synchronized over time
• Over 40 core-dependant PMU counters, over 300 Mali GPU
counters, plus several OS performance metrics available for
monitoring
• Time-based ltering on software prole analysis
• Thread activity mapping per core on SMP systems.
The Architecture of the Digital World®
CPU, GPU, and OS-level performance graphs are time-correlated with process/thread
activity per core and software proling.
Flexible Architecture
Easily customize the Streamline Performance Analyzer to collect
and visualize SoC specic data. This exibility can be used to
monitor statistics from peripherals, fabric, and other processors
interconnected with the Cortex processor.
www.arm.com/optimize
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in any material form except with the prior written permission of the copyright holder. The product described in this document is subject to continuous developments and improvements. All particulars of the product and
its use contained in this document are given in good faith. All warranties implied or expressed, including but not limited to implied warranties of satisfactory quality or tness for purpose are excluded. This document is
intended only to provide information to the reader about the product. To the extent permitted by local laws ARM shall not be liable for any loss or damage arising from the use of any information in this document or any
error or omission in such information. Copyright © 2012 ARM Ltd.
DS-5 Mali | 02.12
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Software Profiling
Profiling reports offer process-to-source-code drill-down analysis of
the hotspots on your CPU. The three available views can be based
on either processor time or PMU counters such as instructions,
cycles, cache misses.
• CallPaths - powerful hierarchical software profile view that can
be used to see statistics per process, thread, library and functional
call chain
• Functions - flat function level list of hotspots
• Code - the ultimate resource to pin-point hotspots within
functions at both source code and disassembly levels.
Applications and the kernel can write text messages or graphics frames into the
Streamline driver for visualization.
Annotations
Reconcile debug and performance analysis with a simple and
powerful solution; code annotations. From simply tracking machine
state changes on a timeline or cross-relating the screen content
with performance issues, this simple code instrumentation links
your software to the Streamline Performance Analyzer.
The Call Paths view displays CPU time or PMU event count (e.g., cache misses), per
process, thread, and function call tree.
Energy Analysis
The ARM Energy Probe is an easily deployable USB accessory that
can sample voltage, current and power from up to three probe
points in the system. It then synchronizes the data with system
performance metrics and the software execution trace.
Key Benets:
• LowTotalCostofOwnership - no additional debug hardware
is required. All you need is the Streamline Performance Analyzer
and the Energy Probe.
• Everythinginoneplace- make informed decisions based on
an integrated view of the ARM application processor and Mali
GPU performance counters, software proling, code annotations
and power consumption data. Power, current and voltage data can be displayed alongside thread activity and other
performance metrics to enable energy optimization