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Recording With Fraps

Storage Performance In Entertainment And Content Creation
By

Overall Statistics
Fraps Recording
Elapsed Time
27:30
Read Operations
8954
Write Operations
223 582
Data Read
573.76 MB
Data Written
23.65 GB
Disk Busy Time
80.96 s
Average Data Rate
306.20 MB/s

Although console gamers need capture cards to record their best moves, PC enthusiasts have the luxury of using Fraps instead. Of course, recording adds a very intensive task on top of gaming, particularly if the title is a demanding first-person shooter, for example. Not only do you have the game's overhead, but then there's the uncompressed video file being written in the background.

Let's put this into perspective. Playing through Battlefield 3's Kaffarov mission involves reading ~500 MB (mostly at a queue depth of one) with very few writes. If you're also recording gameplay with Fraps, the storage profile changes significantly. Suddenly, the majority of accesses are sequential writes queued more than two operations deep. The amount of data that we have to store is staggering too. After 27 minutes of game play, we end up with close to 24 GB of raw, uncompressed video.

I/O Trends:

  • 25% of all operations occur at a queue depth of one
  • 59% of all operations occur at queue depths between two and four
  • 10% of all operations occur at a queue depth of five
  • 97% of all data transferred is sequential
  • 84% of all operations are 128 KB in transfer size


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