Performance of a read in a memory system

A non-transitory computer readable media storing instructions that are executable by a processor to cause a memory system to:

• read data in a memory block, wherein:
• the memory block includes a plurality of word lines, and
• the data is located in a first word line of the plurality of word lines;
• retrieve a value indicative of a throughput time and a value indicative of a bit error rate (BER), wherein the value indicative of the throughput time and the value indicative of the BER are generated based on the read;
• and
• perform a read improvement process if the value indicative of the throughput time is above a threshold value, the read improvement process comprising:
• performing cleanup operations if the value indicative of the BER is higher than an expected BER, the cleanup operations comprising:
• modifying a set of read parameters associated with the memory block, thereby creating modified read parameters,
• reading test data form the word line using the modified read parameters and generating a value indicative of a test bit error rate,
• determining if the value indicative of the test bit error rate is above a BER threshold, and
• flagging the memory block if the value indicative of the BER is at or below the expected BER;
• determining that a number of times the memory clock is flagged is above a threshold amount;
• and
• performing the cleanup operations.

A non-volatile storage system comprising:

• a memory array, wherein:
• the memory array comprises a plurality of non-volatile memory cells arranged as memory blocks, and
• a first memory block of the memory blocks includes a word line storing a first data;
• and
• a controller coupled to the memory array, wherein the controller is configured to:
• read the first data from the first memory block;
• retrieve, from an error correction engine, a value indicative of a throughput time and a value indicative of a bit error rate (BER);
• and
• perform a read improvement process if the value indicative of the throughput time is above a threshold value, the read improvement process comprising:
• comprising performing cleanup operations if the value indicative of the BER is higher than an expected BER, the cleanup operations comprising:
• modifying a set of read parameters associated with the first memory block, thereby creating modified read parameters,
• reading test data form the word line using the modified read parameters and generating a value indicative of a test bit error rate,
• determining if the value indicative of the test bit error rate is above a BER threshold, and
• flagging the memory block if the value indicative of the BER is at or below the expected BER;
• determining that a number of times the memory clock is flagged is above a threshold amount;
• and
• performing the cleanup operations.