Support long distance matching for zstd compression zstd compression supports a special mode for finding matched in distant past, which may result in better compression ratio, at the expense of using more memory (the window size is 128MB).
To enable this optional mode, use the "long" keyword when specifying the compression method (--compress=zstd:long). Author: Justin Pryzby Reviewed-by: Tomas Vondra, Jacob Champion Discussion: https://postgr.es/m/[email protected] Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/2820adf7755d2a377546d5b55f5b1a4a39889336 Modified Files -------------- doc/src/sgml/protocol.sgml | 10 ++++- doc/src/sgml/ref/pg_basebackup.sgml | 4 +- doc/src/sgml/ref/pg_dump.sgml | 2 + src/backend/backup/basebackup_zstd.c | 12 ++++++ src/bin/pg_basebackup/bbstreamer_zstd.c | 13 ++++++ src/bin/pg_basebackup/t/010_pg_basebackup.pl | 9 ++++- src/bin/pg_dump/compress_zstd.c | 5 +++ src/bin/pg_dump/t/002_pg_dump.pl | 3 +- src/bin/pg_verifybackup/t/008_untar.pl | 8 ++++ src/bin/pg_verifybackup/t/010_client_untar.pl | 8 ++++ src/common/compression.c | 57 ++++++++++++++++++++++++++- src/include/common/compression.h | 2 + 12 files changed, 127 insertions(+), 6 deletions(-)
