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Poor Disk Performance

Brendan Gregg

It seemed to have several set speeds, and when pushing hard it would try a faster speed for a couple of seconds, then a faster one, until it found the fastest it could operate (presumably it tries faster speeds until it begins to get sector-ECC errors). The latencies here look like they are a mix of normal speed (~1.9

article thumbnail

Poor Disk Performance

Brendan Gregg

It seemed to have several set speeds, and when pushing hard it would try a faster speed for a couple of seconds, then a faster one, until it found the fastest it could operate (presumably it tries faster speeds until it begins to get sector-ECC errors). The latencies here look like they are a mix of normal speed (~1.9

article thumbnail

Poor Disk Performance

Brendan Gregg

It seemed to have several set speeds, and when pushing hard it would try a faster speed for a couple of seconds, then a faster one, until it found the fastest it could operate (presumably it tries faster speeds until it begins to get sector-ECC errors). The latencies here look like they are a mix of normal speed (~1.9