Intel Linux Now Supports AMD_performance_monitor
Written by Michael Larabel in Intel on 21 November 2013 at 07:55 PM EST. 12 Comments
Intel's OpenGL Mesa driver has added support for the AMD_performance_monitor extension to expose more graphics system performance characteristics.

The latest Intel Mesa DRI driver addition after landing Broadwell OpenGL 3.3 support earlier in the day is supporting the GL_AMD_performance_monitor extension for "Gen5" Ironlake graphics hardware and newer.

The OpenGL.org registry specification reads on AMD_performance_monitor, "This extension enables the capture and reporting of performance monitors. Performance monitors contain groups of counters which hold arbitrary counted data. Typically, the counters hold information on performance-related counters in the underlying hardware. The extension is general enough to allow the implementation to choose which counters to expose and pick the data type and range of the counters. The extension also allows counting to start and end on arbitrary boundaries during rendering."

This support arriving in Mesa Git master today comes after Intel said back in April they were interested in supporting AMD's performance monitor extension and now complements Mesa's support for GL_ARB_debug_output and the crowd-funded GL_KHR_debug.

The AMD_performance_monitor work for Intel's open-source driver landed with this Git commit and other code activity this morning for working out the plumbing to properly support the OpenGL extension with useful information.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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