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Is there a 'top' like command for monitoring the GPU and memory usage of a video card? I am most interested in Linux commands, but and OS would be interesting.

I strongly suspect that for a group of my systems the video cards are being under-utilized (but I have no idea by how much) and would like to re-allocate funds to other bottle-necks. We are using higher end cards, so the price difference between cards is significant.

Thank you.

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migrated from serverfault.com Jan 19 '10 at 3:13

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If you have a nVidia card, then the RivaTuner is your best bet. You can monitor the graphics memory and processor clock speeds, you can overclock your gfx card, customize DirectX, OpenGL and more.

RivaTuner is a complete powerful tweaking environment, providing you everything you may need to tune NVIDIA GPU based display adapters. The widest driver-level Direct3D / OpenGL and system tuning options, flexible profiling system allowing to make custom settings on per-application basis, both driver-level and low-level hardware access modes, unique diagnostic and realtime hardware monitoring features.

nVidia also offer their own tools:

NVIDIA PerfHUD is a powerful real-time performance analysis tool for Direct3D applications. PerfHUD is widely used by the world's best game developers and was a 2007 Game Developer Magazine Frontline Award Finalist.

and this one is available for Windows and Linux:

NVIDIA PerfKit is a comprehensive suite of performance tools to help debug and profile OpenGL and Direct3D applications.

It gives you access to low-level performance counters inside the driver and hardware counters inside the GPU itself. The counters can be used to determine exactly how your application is using the GPU

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Thank you. PerfKit looks like it may do what I want with its gpu_idle counter. –  user25389 Jan 19 '10 at 22:50
    
you're most welcome. –  Molly7244 Jan 19 '10 at 22:58

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