How can tuning num.io.threads and log.segment.bytes together improve Kafka's disk I/O under heavy load?

hard📝 Application Q9 of 15

Kafka - Performance Tuning

How can tuning num.io.threads and log.segment.bytes together improve Kafka's disk I/O under heavy load?

AMore io threads handle multiple segments; optimal segment size reduces flush overhead

BFewer io threads with large segments reduce CPU usage

CMore io threads with tiny segments increase disk fragmentation

DSetting both to zero disables disk I/O for faster processing

Step-by-Step Solution

Solution:

Step 1: Understand interaction of io threads and segment size
More io threads allow concurrent handling of multiple segments, improving throughput.
Step 2: Effect of optimal segment size
Choosing a balanced segment size reduces overhead from frequent flushes and rollovers.
Final Answer:
More io threads handle multiple segments; optimal segment size reduces flush overhead -> Option A
Quick Check:
Tuning io threads + segment size improves disk I/O efficiency [OK]

Quick Trick: Tune threads and segment size together for best disk I/O [OK]

Common Mistakes:

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