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jinhou
Journeyman III

very poor ecc efficiency on w9000

Hello all,

W9000 is the first AMD platform support ECC feature, however, I found that the ECC efficiency is very poor for memory intensive workloads. The overhead is large than 100% for most  memory intensive workloads. Does anyone know the reasons?

Thanks

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marshalll
Journeyman III

Correct single bit memory errors in hardware.

ECC memory maintains a memory system virtually

free from single-bit errors: the data read from each

word is always the same as the data that had been

written to it, even if a single bit actually stored, or

more in some cases, has been flipped to the wrong

state. Some non-ECC memory with parity support

allows errors to be detected, but not corrected;

otherwise errors that may occur are

not detected.

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