Abstract: When stored data is retrieved from a memory using a given logical address, an initial checksum is computed over the data, and an error correction decoding can be performed to generate a decoded data payload. The decoded data payload may include decoded data and a decoded logical address. An uncorrectable error failure analysis can be performed based on the initial checksum, the error correction decoder status, and the decoded logical address to determine which error type has occurred from a plurality of error types.

Abstract: Techniques are described for improving the decoding latency and throughput of an error correction system that includes multiple decoders. For example, the error correction system intelligently distributes and balances the decoding of codewords between the different decoders. In particular, the error correction system can consider different factors associated with decoding various codewords including, for instance, the checksum of a codeword that is to be decoded, an estimated number of decoding iterations to decode the codeword by a decoder based on the checksum, and/or an accumulated number of decoding iterations for decoding by the decoder of the codeword in addition to other codewords already buffered for the decoder. Given these factors, the error correction system can generate a decision to decode the codeword by the decoder or by another decoder of the error correction system, where the decision optimizes the performance.