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957146dc

Commit 957146dc authored 25 years ago by Tom Lane

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Second phase of psort reconstruction project: add bookkeeping logic to

recycle storage within sort temp file on a block-by-block basis. This
reduces peak disk usage to essentially just the volume of data being
sorted, whereas it had been about 4x the data volume before.

parent 357231e6

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Changes 7

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src/backend/storage/file/buffile.c 108 additions, 126 deletions

src/backend/storage/file/buffile.c
src/backend/utils/sort/Makefile 2 additions, 2 deletions

src/backend/utils/sort/Makefile
src/backend/utils/sort/logtape.c 903 additions, 0 deletions

src/backend/utils/sort/logtape.c
src/backend/utils/sort/psort.c 232 additions, 238 deletions

src/backend/utils/sort/psort.c
src/include/storage/buffile.h 3 additions, 2 deletions

src/include/storage/buffile.h
src/include/utils/logtape.h 41 additions, 0 deletions

src/include/utils/logtape.h
src/include/utils/psort.h 4 additions, 84 deletions

src/include/utils/psort.h

with 1293 additions and 452 deletions

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