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Allow internal sorts to be stored in memory rather than in files.

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This commit is contained in:
Bruce Momjian
1997-08-06 03:42:21 +00:00
parent 3bea7b138b
commit f5f366e188
11 changed files with 633 additions and 516 deletions
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24
src/man/postgres.1
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@ -1,6 +1,6 @@
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/postgres.1,v 1.5 1997/01/26 15:32:20 scrappy Exp $
.\" $Header: /cvsroot/pgsql/src/man/Attic/postgres.1,v 1.6 1997/08/06 03:42:18 momjian Exp $
.TH POSTGRES95 UNIX 12/08/96 Postgres95 Postgres95
.SH NAME
postgres \(em the Postgres backend server
@ -79,7 +79,10 @@ is the number of shared-memory buffers that the
.IR "postmaster"
has allocated for the backend server processes that it starts. If the
backend is running standalone, this specifies the number of buffers to
allocate. This value defaults to 64.
allocate. This value defaults to 64, and each buffer is 8k bytes.
.TP
.BR "-E"
Echo all queries.
.TP
.BR "-F"
Disable automatic fsync() call after each transaction.
@ -89,15 +92,17 @@ while a transaction is in progress will probably cause data loss.
.BR "-P" " filedes"
.IR "filedes"
specifies the file descriptor that corresponds to the socket (port) on
which to communicate to the frontend process. This option is
which to communicate to the frontend process. This option is
.BR not
useful for interactive use.
.TP
.BR "-Q"
Specifies \*(lqquiet\*(rq mode.
.TP
.BR "-E"
Echo all queries.
.BR "-S"
Specifies the amount of memory to be used by internal sorts before using
disk files for sorting. This value is specified in 1k bytes, and
defaults to 512.
.TP
.BR "-e"
The
@ -154,15 +159,6 @@ Turns off the locking system.
.BR "-N"
Disables use of newline as a query delimiter.
.TP
.BR "-S"
Indicates that the transaction system can run with the assumption of
stable main memory, thereby avoiding the necessary flushing of data
and log pages to disk at the end of each transaction system. This is
only used for performance comparisons for stable vs. non-stable
storage. Do not use this in other cases, as recovery after a system
crash may be impossible when this option is specified in the absence
of stable main memory.
.TP
.BR "-b"
Enables generation of bushy query plan trees (as opposed to left-deep
query plans trees). These query plans are not intended for actual

4
src/man/postmaster.1
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@ -1,6 +1,6 @@
.\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/postmaster.1,v 1.5 1997/02/19 01:31:30 momjian Exp $
.\" $Header: /cvsroot/pgsql/src/man/Attic/postmaster.1,v 1.6 1997/08/06 03:42:21 momjian Exp $
.TH POSTMASTER UNIX 11/05/95 PostgreSQL PostgreSQL
.SH "NAME"
postmaster \(em run the Postgres postmaster
@ -60,7 +60,7 @@ understands the following command-line options:
is the number of shared-memory buffers for the
.IR "postmaster"
to allocate and manage for the backend server processes that it
starts. This value defaults to 64.
starts. This value defaults to 64, and each buffer is 8k bytes.
.TP
.BR "-D" " data_dir"
Specifies the directory to use as the root of the tree of database