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Tom Lane 0a0727ccfc Improve performance of binary COPY FROM through better buffering. ... At least on Linux and macOS, fread() turns out to have far higher per-call overhead than one could wish. Reading 64KB of data at a time and then parceling it out with our own memcpy logic makes binary COPY from a file significantly faster --- around 30% in simple testing for cases with narrow text columns (on Linux ... even more on macOS). In binary COPY from frontend, there's no per-call fread(), and this patch introduces an extra layer of memcpy'ing, but it still manages to eke out a small win. Apparently, the control-logic overhead in CopyGetData() is enough to be worth avoiding for small fetches. Bharath Rupireddy and Amit Langote, reviewed by Vignesh C, cosmetic tweaks by me Discussion: https://postgr.es/m/CALj2ACU5Bz06HWLwqSzNMN=Gupoj6Rcn_QVC+k070V4em9wu=A@mail.gmail.com		6 years ago
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access	WAL Log invalidations at command end with wal_level=logical.	6 years ago
bootstrap	Be more careful about marking catalog columns NOT NULL by default.	6 years ago
catalog	Rename configure.in to configure.ac	6 years ago
commands	Improve performance of binary COPY FROM through better buffering.	6 years ago
executor	Fix buffer usage stats for nodes above Gather Merge.	6 years ago
foreign	Update copyrights for 2020	7 years ago
jit	pgindent run prior to branching v13.	6 years ago
lib	Move src/backend/utils/hash/hashfn.c to src/common	6 years ago
libpq	code: replace most remaining uses of 'master'.	6 years ago
main	Clean up includes of s_lock.h.	6 years ago
nodes	Rename field "relkind" to "objtype" for CTAS and ALTER TABLE nodes	6 years ago
optimizer	Use MinimalTuple for tuple queues.	6 years ago
parser	Rename field "relkind" to "objtype" for CTAS and ALTER TABLE nodes	6 years ago
partitioning	Fix two typos in a comment	6 years ago
po	Translation updates	6 years ago
port	Add huge_page_size setting for use on Linux.	6 years ago
postmaster	code: replace 'master' with 'primary' where appropriate.	6 years ago
regex	Dial back -Wimplicit-fallthrough to level 3	6 years ago
replication	WAL Log invalidations at command end with wal_level=logical.	6 years ago
rewrite	Add missing invocations to object access hooks	6 years ago
snowball	code: replace most remaining uses of 'master'.	6 years ago
statistics	Run pgindent with new pg_bsd_indent version 2.1.1.	6 years ago
storage	Fix error message.	6 years ago
tcop	Rename field "relkind" to "objtype" for CTAS and ALTER TABLE nodes	6 years ago
tsearch	Fix assorted bugs by changing TS_execute's callback API to ternary logic.	6 years ago
utils	Replace TS_execute's TS_EXEC_CALC_NOT flag with TS_EXEC_SKIP_NOT.	6 years ago
.gitignore	…
Makefile	Update copyrights for 2020	7 years ago
common.mk	…
nls.mk	Add missing gettext triggers	6 years ago