Sequence Parsing Strategies in SeqKit

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Illustration of FASTA/Q file parsing strategies. (A) and (C) Main thread parses one sequence, waits (blocked) it to be processed and then parses next one. (B) Sequence parsing thread continuously (non-blocked) parses sequences and passes them to main thread. The width of rectangles representing sequence parsing and sequence processing is proportional with running time. Sequence parsing speeds in (A) and (B) are the same, which are both much slower than that in (C). The speeds of sequence processing are identical in (A), (B) and (C). In (B), chunks of sequences in buffer can be processed in parallel, but most of the time the main thread needs to serially manipulate the sequences.