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twblamer
Asked: 2012-09-15 13:25:56 +0800 CST

Can I generate I/O activity with a max (throttled) throughput?

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For example, is there a tool or method where I can say (for example) "generate up to 50 MB/s of read activity to this file, but no greater"? Or configure a tiny delay between read operations, which could have basically the same effect? I have a specific need to create an I/O workload that's more deterministic than a normal dd or disk stress test. I'm looking for something that works in Linux...

linux

1 Answers

  1. Best Answer

    You can use cpipe with -s option.

    cat /dev/zero | cpipe -s 50000 > /testfile
cat /testfile | cpipe -s 50000 > /dev/null
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