Window: Summary - Memory Usage
Max DRAM System Bandwidth
Maximum DRAM bandwidth measured for the whole system (across all packages) by running a micro-benchmark before the collection starts. If the system has already been actively loaded at the moment of collection start (for example, with the attach mode), the value may be less accurate.
Max DRAM Single-Package Bandwidth
Maximum DRAM bandwidth for single package measured by running a micro-benchmark before the collection starts. If the system has already been actively loaded at the moment of collection start (for example, with the attach mode), the value may be less accurate.
Bandwidth Utilization Histogram
- Interconnect bandwidth analysis is supported by theVTunefor Intel microarchitecture code name Ivy Bridge EP and later.Profiler
- To learn bandwidth capabilities, refer to your system specifications or run appropriate benchmarks to measure them; for example, Intel Memory Latency Checker can provide maximum achievable DRAM and Interconnect bandwidth.
Top Memory Objects by Latency (Linux* Targets Only)
- Memory objects identification is supported only for Linux targets and only for processors based on Intel microarchitecture code name Sandy Bridge and later.
- Only metrics based on DLA-capable hardware events are applicable to the memory objects analysis. For example, the CPU Time metric is based on a non DLA-capable Clockticks event, so cannot be applied to memory objects. Examples of applicable metrics are Loads, Stores, LLC Miss Count, and Average Latency.
Collection and Platform Info
Application Command Line
Path to the target application.
Operating system used for the collection.
Name of the computer used for the collection.
Size of the result collected by the
Collection start time
Collection stop time
Stop time (in UTC format) of the external collection. Explore the
Timelinepane to track the performance statistics provided by the custom collector over time.
Name of the processor used for the collection.
Frequency of the processor used for the collection.
Logical CPU Count
Logical CPU count for the machine used for the collection.
Physical Core Count
Number of physical cores on the system.
Name of the Graphics installed on the system.
Version of the graphics driver installed on the system.
Number of execution units (EUs) in the
Render and GPGPUengine. This data is Intel® HD Graphics and Intel® Iris® Graphics (further: Intel Graphics) specific.
Max EU Thread Count
Maximum number of threads per execution unit. This data is Intel Graphics specific.
Max Core Frequency
Maximum frequency of the Graphics processor. This data is Intel Graphics specific.
Graphics Performance Analysis
GPU metrics collection is enabled on the hardware level. This data is Intel Graphics specific.
Some systems disable collection of extended metrics such as L3 misses, memory accesses, sampler busyness, SLM accesses, and others in the BIOS. On some systems you can set a BIOS option to enable this collection. The presence or absence of the option and its name are BIOS vendor specific. Look for the
Intel® Graphics Performance Analyzersoption (or similar) in your BIOS and set it to