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Workstation Storage: Modeling, CAD, Programming, And Virtualization

LightWave 3D (Modeling): Rendering

Overall Statistics
Elapsed Time13:37
Read Operations128
Write Operations1308
Data Read6.90 MB
Data Written27.63 MB
Disk Busy Time0.194 s
Average Data Rate178.15 MB/s

We're using a LightWave example titled "Radiosity Test Scene" for our rendering trace. According to its author, "...this scene is designed to throw off the GI engine by introducing very small detail in a large space that's almost entirely indirectly illuminated, while still rendering very fast."

This scene isn't a particularly exhaustive rendering test; it only took 13 minutes and 30 seconds to render on our Core i5-2500K-based system. However, more complex scenes yield similar results. We see that a majority of operations occur at a queue depth of one during the render process. Yet, due to the numerous small textures involved, most of the data is transferred randomly, and a significant number are moved in 4 KB blocks.

I/O Trends:

  • 78% of all operations occur at a queue depth of one
  • 65% of all data transferred is random
  • 47% of all operations are 4 KB in transfer size
  • 11% of all operations are smaller than 512 bytes in transfer size