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This option may be set to FAST (the default) to request the checkpoint be completed as fast as possible, or SPREAD to request the checkpoint be spread over a longer interval (based on the checkpoint-related configuration parameters). Note that the server may consolidate the options for concurrently requested checkpoints. For example, if one session requests a "fast" checkpoint and another requests a "spread" checkpoint, the server may perform one "fast" checkpoint. Author: Christoph Berg <myon@debian.org> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Fujii Masao <masao.fujii@oss.nttdata.com> Reviewed-by: Laurenz Albe <laurenz.albe@cybertec.at> Reviewed-by: Dilip Kumar <dilipbalaut@gmail.com> Discussion: https://postgr.es/m/aDnaKTEf-0dLiEfz%40msg.df7cb.de