101 · Question #404
Which four of these statements regarding object size and WebAccelerator performance are true? (Choose four.)
The correct answer is B. Large objects allow fewer requests per second C. Large objects result in higher throughput E. Small objects such as images cache well F. Small objects allow more requests per second. Object size fundamentally affects WebAccelerator performance in two dimensions: large objects drive higher throughput but lower request rates, while small objects drive higher request rates and cache more efficiently. Video specifically does not cache well due to its size and…
Question
Which four of these statements regarding object size and WebAccelerator performance are true? (Choose four.)
Options
- ALarge objects such as video cache well
- BLarge objects allow fewer requests per second
- CLarge objects result in higher throughput
- DSmall objects result in higher throughput
- ESmall objects such as images cache well
- FSmall objects allow more requests per second
How the community answered
(39 responses)- A8% (3)
- B74% (29)
- D18% (7)
Why each option
Object size fundamentally affects WebAccelerator performance in two dimensions: large objects drive higher throughput but lower request rates, while small objects drive higher request rates and cache more efficiently. Video specifically does not cache well due to its size and dynamic nature.
Video files are typically very large and often dynamically generated or streamed, which consumes significant cache capacity and yields poor cache hit ratios, making them poor caching candidates.
Large objects require more time to transfer completely, meaning the system can service fewer requests per second because each request holds a connection longer.
Large objects transfer more bytes per request, so even though request rate is lower, total bytes per second (throughput) is higher when large objects are being served.
Small objects result in higher requests per second, not higher throughput - throughput (bytes/second) is actually higher when large objects are being transferred because each transaction moves more data.
Small objects like images are static, frequently requested, and small enough to store many copies in cache, making them ideal candidates for cache hits and improved performance.
Small objects complete quickly, freeing connections rapidly and allowing the server to handle a higher number of requests per second compared to large object transfers.
Concept tested: WebAccelerator object size impact on caching and throughput
Source: https://techdocs.f5.com/kb/en-us/products/big-ip_webaccel/manuals/product/bigip-webaccel-admin-11-6-0.html
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