postgresql/contrib/pgbench
Tom Lane 9537739f7f Fix pgbench's getrand() function so that min and max have approximately
the same chance of being selected as do numbers between them.  Problem
noted by Greg Stark; fix by Alexey Klyukin.
2008-03-10 01:23:04 +00:00
..
Makefile Remove references to READMEs from /contrib Makefiles. 2007-11-10 23:59:52 +00:00
pgbench.c Fix pgbench's getrand() function so that min and max have approximately 2008-03-10 01:23:04 +00:00
README.pgbench_jis Add -F option to set fillfactor for tellers, accounts and branches. 2007-04-08 01:15:07 +00:00

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$PostgreSQL: pgsql/contrib/pgbench/README.pgbench_jis,v 1.19 2007/04/08 01:15:07 ishii Exp $

pgbench README

$B"#(Bpgbench $B$H$O!)(B

pgbench $B$O(BPostgreSQL$B$N%Y%s%A%^!<%/%F%9%H$r9T$J$&%W%m%0%i%`$G$9!%(B

pgbench $B$O(B SELECT/UPDATE/INSERT $B$r4^$`%H%i%s%6%/%7%g%s$r<B9T$7!$A4BN$N(B
$B<B9T;~4V$H<B:]$K40N;$7$?%H%i%s%6%/%7%g%s$N?t$+$i(B 1 $BIC4V$K<B9T$G$-$?%H(B
$B%i%s%6%/%7%g%s?t(B (tps) $B$rI=<($7$^$9!%=hM}$NBP>]$H$J$k%F!<%V%k$O%G%U%)(B
$B%k%H$G$O(B 10$BK|%?%W%k$N%G!<%?$r4^$_$^$9!%(B

$B<B:]$NI=<($O0J2<$N$h$&$J46$8$G$9!%(B

number of clients: 4
number of transactions per client: 100
number of processed transactions: 400/400
tps = 19.875015(including connections establishing)
tps = 20.098827(excluding connections establishing)

pgbench $B$O(B JDBCBench $B$H$$$&!$$b$H$b$H$O(B MySQL $BMQ$K=q$+$l$?(B JDBC $BMQ$N%Y(B
$B%s%A%^!<%/%W%m%0%i%`$r;29M$K:n@.$5$l$^$7$?!%(B

$B"#(Bpgbench $B$NFCD'(B

o C $B8@8l$H(B libpq $B$@$1$G=q$+$l$F$$$k$N$G0\?"@-$,9b$/!$4JC1$K%$%s%9%H!<(B
$B%k$G$-$^$9!%(B

o pgbench $B$O(B libpq $B$NHsF14|=hM}5!G=$r;H$C$F%^%k%A%f!<%64D6-$r%7%_%e%l!<(B
$B%H$7$^$9!%MF0W$KF1;~@\B34D6-$r%F%9%H$G$-$^$9!%(B

$B"#(Bpgbench $B$N%$%s%9%H!<%k(B

PostgreSQL$B$r%3%s%Q%$%k!$%$%s%9%H!<%k$7$?8e(B

$ make
$ make install

$B$H$7$^$9!%(B

$B"#(Bpgbench $B$N;H$$J}(B

$ pgbench [$B%G!<%?%Y!<%9L>(B]

$B$G$9!%%G!<%?%Y!<%9L>$r>JN,$9$k$H!$%f!<%6L>$HF1$8%G!<%?%Y!<%9$r;XDj$7$?(B
$B$b$N$H$_$J$7$^$9!%%G!<%?%Y!<%9$O8e=R$N(B -i $B%*%W%7%g%s$r;H$C$F$"$i$+$8$a(B
$B=i4|2=$7$F$*$/$3$H$,$G$-$^$9!%(B-f$B%*%W%7%g%s$r;H$C$FFH<+$N%H%i%s%6%/%7%g(B
$B%s$rDj5A$9$k>l9g$O!$<+J,$G%G!<%?%Y!<%9$N=i4|2=$r$7$F$*$/I,MW$,$"$j$^$9!%(B

pgbench $B$K$O$$$m$$$m$J%*%W%7%g%s$,$"$j$^$9!%(B

-h $B%[%9%HL>(B	PostgreSQL$B$N%G!<%?%Y!<%9%G!<%b%s(B postmaster $B$NF0(B
		$B$$$F$$$k%[%9%HL>$r;XDj$7$^$9!%>JN,$9$k$H<+%[%9%H$K(B Unix domain
		socket $B$G@\B3$7$^$9!%(B

-p $B%]!<%HHV9f(B	postmaster $B$N;HMQ$9$k%]!<%HHV9f$r;XDj$7$^$9!%>JN,$9$k$H(B 5432
		$B$,;XDj$5$l$?$b$N$H$_$J$7$^$9!%(B

-c $B%/%i%$%"%s%H?t(B	$BF1;~<B9T%/%i%$%"%s%H?t$r;XDj$7$^$9!%>JN,;~$O(B
			1 $B$H$J$j$^$9!%(Bpgbench $B$OF1;~<B9T%/%i%$%"%s%HKh$K(B
			$B%U%!%$%k%G%#%9%/%j%W%?$r;HMQ$9$k$N$G!$;HMQ2DG=(B
			$B%U%!%$%k%G%#%9%/%j%W%??t$r1[$($k%/%i%$%"%s%H?t$O(B
			$B;XDj$G$-$^$;$s!%;HMQ2DG=%U%!%$%k%G%#%9%/%j%W%??t(B
			$B$O(B limit $B$d(B ulimit $B%3%^%s%I$GCN$k$3$H$,$G$-$^$9!%(B

-t $B%H%i%s%6%/%7%g%s?t(B	$B3F%/%i%$%"%s%H$,<B9T$9$k%H%i%s%6%/%7%g%s?t$r(B
			$B;XDj$7$^$9!%>JN,;~$O(B 10 $B$H$J$j$^$9!%(B

-s $B%9%1!<%j%s%0%U%!%/%?!<(B

		-i $B%*%W%7%g%s$H0l=o$K;HMQ$7$^$9!%(B
		$B%9%1!<%j%s%0%U%!%/%?!<$O(B1$B0J>e$N@0?t!%%9%1!<%j%s%0%U%!(B
		$B%/%?!<$rJQ$($k$3$H$K$h$j!$%F%9%H$NBP>]$H$J$k%F!<%V%k$N(B
		$BBg$-$5$,(B 10$BK|(B x [$B%9%1!<%j%s%0%U%!%/%?!<(B]$B$K$J$j$^$9!%(B
		$B%G%U%)%k%H$N%9%1!<%j%s%0%U%!%/%?!<$O(B 1 $B$G$9!%(B
		-f $B%*%W%7%g%s$G;XDj$7$?%U%!%$%k$+$i%9%1!<%j%s%0%U%!%/(B
		$B%?!<$r;2>H$9$k$K$O(B scale $B$H$$$&JQ?tL>$r;HMQ$7$^$9!%(B
		$BCm0U(B: $B%9%1!<%j%s%0%U%!%/%?!<$O>/$J$/$H$b(B -c $B$G;XDj$5$l$kF1;~@\(B
		$BB3%f!<%6?t$HF1$8$+$=$l$h$j$bBg$-$/$7$F$/$@$5$$!%$G$J$$$H!$(B
		pgbench$B$N7k2L$O(BUPDATE$B$N6%9g$KBg$-$/1F6A$5$l$F$7$^$$$^$9!%(B
		$BAH9~$_$N%Y%s%A%^!<%/%Q%?!<%s$G$O!$(Bbraches$B$N?t(B(=braches$B%F!<%V%k(B
		$B$N9T?t(B)$B$,<+F0E*$K%9%1!<%j%s%0%U%!%/%?!<$K@_Dj$5$l$^$9!%(B
		$B%+%9%?%`%/%(%j(B(-f$B%*%W%7%g%s;HMQ(B)$B$G$O!$%9%1!<%j%s%0%U%!%/%?!<$O(B
		$B<+F0@_Dj$5$l$^$;$s!%(B

-D varname=value

		$BJQ?t$rDj5A$7$^$9!%Dj5A$7$?JQ?t$O(B -f $B%*%W%7%g%s$G;XDj$7$?%U%!%$(B
		$B%k$+$i;2>H$G$-$^$9!%(B-D $B%*%W%7%g%s$G$OJQ?tL>$HCM$r(B = ($B%$%3!<%k(B)
		$B$G6h@Z$C$F;XDj$7$^$9!%(B-D $B%*%W%7%g%s$OJ#?t;XDj$G$-$^$9!%(B

-U login	DB$B%f!<%6$N%m%0%$%sL>$r;XDj$7$^$9!%(B

-P password	$B%Q%9%o!<%I$r;XDj$7$^$9!%$J$*!$$3$N%*%W%7%g%s$r;H$&$H!$(B
		$B%Q%9%o!<%I$r(Bps$B%3%^%s%I$G8+$i$l$k$J$I!$%;%-%e%j%F%#%[!<(B
		$B%k$K$J$k2DG=@-$,$"$k$N$G!$%F%9%HMQ$K$N$_$*;H$$2<$5$$!%(B

-n		$B$3$N%*%W%7%g%s$r;XDj$9$k$H!$%Y%s%A%^!<%/3+;OA0$K(B vacuum $B$H(B
		history $B$N%/%j%"$r9T$J$$$^$;$s!%(B

-v              $B$3$N%*%W%7%g%s$r;XDj$9$k$H!$%G%U%)%k%H$N;vA0%/%j!<%s%"%C(B
                $B%W=hM}$K2C$(!$(Baccounts$B$r(BVACUUM ANALYZE$B$7$^$9!%(B

		-v -n $B$NN>J}$r>JN,$7$?>l9g$N%G%U%)%k%H;vA0%/%j!<%s%"%C(B
                $B%W=hM}$O!$0J2<$N=hM}$r9T$$$^$9!%(B

		- history$B$+$i$NA49T:o=|(B
		- branches, tellers, history$B$N(BVACUUM

		$B$3$l$O!$(Bvacuum $B$N;~4V$r:G>.8B$K$7$J$,$i!$%Q%U%)!<%^%s%9$K(B
		$B1F6A$9$k%4%_A]=|$r8z2LE*$K9T$$$^$9!%DL>o$O(B -v $B$H(B -n $B$r(B
		$B>JN,$9$k$3$H$r$*$9$9$a$7$^$9!%(B

-S		TPC-B$B$N%H%i%s%6%/%7%g%s$G$O$J$/!$8!:w$N$_$N%H%i%s%6%/%7%g%s$r(B
		$B<B9T$7$^$9!%8!:w%9%T!<%I$rB,Dj$7$?$$$H$-$K;H$$$^$9!%(B

-N
		"branches"$B$H(B"tellers"$B%F!<%V%k$N99?7$r9T$$$^$;$s!%$3$l(B
		$B$K$h$C$F(B"branches"$B$H(B"tellers"$B$X$NBgNL$N99?7$N6%9g$N$J(B
		$B$$>uBV$G$NB,Dj$r9T$$$^$9!%$7$?$,$C$F(BTPC-B$B$N%9%Z%C%/$K(B
		$B$OE,9g$7$J$/$J$j$^$9$,!$$h$j8=<BE*$JIi2Y$r%F%9%H$9$k$3(B
		$B$H$,$G$-$^$9!%(B

-f filename	$B%H%i%s%6%/%7%g%s$NFbMF$,5-=R$5$l$?%U%!%$%kL>$r;XDj$7$^(B
		$B$9!%$3$N%*%W%7%g%s$r;XDj$9$k$H!$%U%!%$%k$K5-=R$5$l$?Fb(B
		$BMF$N%H%i%s%6%/%7%g%s$r<B9T$7$^$9!%$J$*!$%Y%s%A%^!<%/$N(B
		$BBP>]$H$J$k%G!<%?%Y!<%9$O$"$i$+$8$a=i4|2=$7$F$*$/I,MW$,(B
		$B$"$j$^$9!%F~NO%U%)!<%^%C%H$K$D$$$F$O8e=R$7$^$9!%(B

-C		$B$3$N%*%W%7%g%s$r;XDj$9$k$H!$:G=i$K3NN)$7$?%3%M%/%7%g%s(B
		$B$r;H$$2s$9$N$G$O$J$/!$3F%H%i%s%6%/%7%g%s$4$H$K(BDB$B$X$N@\(B
		$BB3$r9T$$$^$9!%%3%M%/%7%g%s$N%*!<%P!<$X%C%I$rB,Dj$9$k$N(B
		$B$KM-8z$G$9!%(B

-l		$B8D!9$N%H%i%s%6%/%7%g%s$N<B9T;~4V$r5-O?$7$^$9!%5-O?@h$O(B
		$B%+%l%s%H%G%#%l%/%H%j0J2<$N(Bpgbench_log.xxx$B$H$$$&%U%!%$(B
		$B%k$G$9!%%U%!%$%k$N%U%)!<%^%C%H$O!$(B
		
			$B%/%i%$%"%s%H(BID	$B%H%i%s%6%/%7%g%sHV9f(B  $B;~4V(B $B%U%!%$%kHV9f(B Unix$B%?%$%`(B($BIC(B) $B%*%U%;%C%H(B

		$B$H$J$C$F$$$^$9!%;~4V$O%^%$%/%mICC10L$G$9!%(B

		$B%U%!%$%kHV9f$O%F%9%H$K;H$o$l$?%U%!%$%k$NHV9f$G$9(B(-f$B%*%W%7%g%s(B
		$B$rJ#?t;XDj$7$?$H$-$KM-MQ$G$9(B)$B!%(B

		$B!V(BUnix$B%?%$%`(B($BIC(B) $B%*%U%;%C%H!W$O!$%H%i%s%6%/%7%g%s$,40N;$7$?$H(B
		$B$-$N(BUNIX$B%(%]%C%/%?%$%`$H%^%$%/%mICC10L$N%*%U%;%C%H$G$9(B(ISO
		8601$B%?%$%`%9%?%s%W$HIC$NCf$NC<?t(B)$B!%(B

		$B%m%0$N=PNONc$r<($7$^$9!%(B

		0 199 2241 0 1175850568 995598
		0 200 2465 0 1175850568 998079
		0 201 2513 0 1175850569 608
		0 202 2038 0 1175850569 2663

-F $B%U%#%k%U%!%/%?!<(B
		accounts, tellers, bracnhes$B%F!<%V%k$r:n@.$9$k:]$K;XDj$5$l$?%U%#(B
		$B%k%U%!%/%?!<$r;HMQ$7$^$9!%%U%#%k%U%!%/%?!<$N%G%U%)%k%H$O(B100$B$G(B
		$B$9!%$3$N%*%W%7%g%s$O(B -i $B%*%W%7%g%s$HF1;~$K;HMQ$7$^$9!%(B

-d		$B%G%P%C%0%*%W%7%g%s!%MM!9$J>pJs$,I=<($5$l$^$9!%(B

$B"#%G!<%?%Y!<%9$N=i4|2=(B

pgbench $B$G%Y%s%A%^!<%/%F%9%H$r<B;\$9$k$?$a$K$O!$$"$i$+$8$a%G!<%?%Y!<%9(B
$B$r=i4|2=$7!$%F%9%H%G!<%?$r:n$kI,MW$,$"$j$^$9!%(B-f$B%*%W%7%g%s$r;H$C$FFH<+(B
$B$N%H%i%s%6%/%7%g%s$rDj5A$9$k>l9g$O!$<+J,$G%G!<%?%Y!<%9$N=i4|2=$r$7$F$*(B
$B$/I,MW$,$"$j$^$9!%(B

$ pgbench -i [$B%G!<%?%Y!<%9L>(B]

$B$3$l$K$h$j0J2<$N%F!<%V%k$,:n$i$l$^$9(B($B%9%1!<%j%s%0%U%!%/%?!<(B == 1 $B$N>l9g(B)$B!%(B

$B!vCm0U!v(B
$BF1$8L>A0$N%F!<%V%k$,$"$k$H:o=|$5$l$F$7$^$&$N$G$4Cm0U2<$5$$!*!*(B

$B%F!<%V%kL>(B	$B%?%W%k?t(B
-------------------------
branches	1
tellers		10
accounts	100000
history		0

$B%9%1!<%j%s%0%U%!%/%?!<$r(B 10,100,1000 $B$J$I$KJQ99$9$k$H!$>e5-%?%W%k?t$O(B
$B$=$l$K1~$8$F(B10$BG\!$(B100$BG\!$(B1000$BG\$K$J$j$^$9!%%F!<%V%k$H%$%s%G%C%/%9$N%5(B
$B%$%:$O%G!<%?%Y!<%9%5%$%:$O35$M$=$l$>$l!$(B130MB$B!$(B1.3GB$B!$(B13GB$B$[$I$K$J$j$^(B
$B$9!%(B

$B$?$H$($P!$%9%1!<%j%s%0%U%!%/%?!<$r(B 10 $B$H$9$k$H!$(B

$B%F!<%V%kL>(B	$B%?%W%k?t(B
-------------------------
branches	10
tellers		100
accounts	1000000
history		0

$B$K$J$j$^$9!%(B

$B"#!V%H%i%s%6%/%7%g%s!W$NDj5A(B

pgbench $B$G$O!$0J2<$N%7!<%1%s%9$rA4It40N;$7$F(B1$B%H%i%s%6%/%7%g%s$H?t$($F(B
$B$$$^$9!%(B

(1) begin;

(2) update accounts set abalance = abalance + :delta where aid = :aid;
    $B$3$3$G!$(B:delta$B$O(B1$B$+$i(B1000$B$^$G$NCM$r<h$kMp?t!$(B:aid $B$O(B 1$B$+$i(B100000$B$^$G(B
    $B$NCM$r<h$kMp?t$G$9!%0J2<!$Mp?t$NCM$O$=$l$>$l$3$N%H%i%s%6%/%7%g%s$N(B
    $BCf$G$OF1$8CM$r;H$$$^$9!%(B

(3) select abalance from accounts where aid = :aid;
    $B$3$3$G$O(B1$B7o$@$18!:w$5$l$^$9!%(B

(4) update tellers set tbalance = tbalance + :delta where tid = :tid;
    $B$3$3$G(B :tid $B$O(B 1$B$+$i(B10$B$N4V$NCM$r$H$kMp?t$G$9!%(B

(5) update branches set bbalance = bbalance + :delta where bid = :bid;
    $B$3$3$G(B :bid $B$O(B 1 $B$+$i(B[$B%9%1%j%s%0%U%!%/%?!<(B]$B$N4V$NCM$r<h$kMp?t$G$9!%(B

(6) insert into history(tid,bid,aid,delta) values(:tid,:bid,:aid,:delta);

(7) end;

-N$B%*%W%7%g%s$r;HMQ$9$k$H!$(B(4)(5)$B$O<B9T$5$l$^$;$s!%(B

$B"#F~NO%U%!%$%k$N%U%)!<%^%C%H(B

-f $B%*%W%7%g%s$r;XDj$7$F%H%i%s%6%/%7%g%s$K4^$^$l$k(B SQL $B%3%^%s%I$NFbMF$r(B
$B5-=R$7$?%U%!%$%k$rFI$_9~$`$3$H$,$G$-$^$9!%F~NO%U%!%$%k$K$O(B 1 $B9T$K$D$-(B 
1 $B$D$N%3%^%s%I$r5-=R$7$^$9!%6u9T$OL5;k$5$l!$Fs=E%O%$%U%s$G;O$^$k9T$O%3(B
$B%a%s%H$r0UL#$7$^$9!%(B

-f $B%*%W%7%g%s$OJ#?t;XDj$G$-$^$9!%$3$N>l9g$O3F%H%i%s%6%/%7%g%s$K$O%i%s(B
$B%@%`$KA*$P$l$?%U%!%$%k$K5-=R$5$l$?(BSQL$B$,<B9T$5$l$^$9!%(B

$B%3%^%s%I$K$O!$(BSQL $B%3%^%s%I$K2C$(!$%P%C%/%9%i%C%7%e$G;O$^$k%a%?%3%^%s%I(B
$B$r5-=R$G$-$^$9!%%a%?%3%^%s%I$O(B pgbench $B<+?H$K$h$C$F<B9T$5$l$^$9!%%a%?(B
$B%3%^%s%I$N7A<0$O%P%C%/%9%i%C%7%e!$$=$ND>8e$K%3%^%s%I$NF0;l!$$=$N<!$K0z(B
$B?t$,B3$-$^$9!%F0;l%3%^%s%I$H0z?t!$$^$?$=$l$>$l$N0z?t$O6uGrJ8;z$K$h$C$F(B
$B6h@Z$i$l$^$9!%(B

$B8=:_$N$H$3$m!$0J2<$N%a%?%3%^%s%I$,Dj5A$5$l$F$$$^$9!%(B

\set name operand1 [ operator operand2 ]
	$BHo1i;;?t(B operand1 $B$H(B operand2 $B$r1i;;;R(B operator $B$K$h$C$F1i;;$7(B
	$B$?7k2L$rJQ?t(B name $B$K@_Dj$7$^$9!%8=>u$G$O@0?t$N;MB'1i;;$N$_$KBP(B
	$B1~$7$F$$$^$9!%$J$*!$1i;;;R$H(B 2 $B$DL\$NHo1i;;?t$r>JN,$9$k$HC1=c(B
	$B$K(B 1 $B$DL\$NHo1i;;?t$rJQ?t$K@_Dj$7$^$9!%(B

	$BJQ?t$K1i;;$N7k2L$r@_Dj$9$k$K$O!$(B\set $B%a%?%3%^%s%I$r;HMQ$7$F0J(B
	$B2<$N$h$&$K5-=R$7$^$9!%(B

	\set ntellers 10 * :tp

	$B$3$l$O!$JQ?t(B ntellers $B$K%9%1!<%j%s%0%U%!%/%?!<(B (-s $B%*%W%7%g%s(B
	$B$G;XDj$7$?(B) $B$r(B 10 $BG\$7$?7k2L$r@_Dj$7$^$9!%(B

\setrandom name min max

	$B:G>.CM(B min $B$H:GBgCM(B max $B$N4V$NCM$r<h$kMp?t$r!$(Bname $BJQ?t$K@_Dj(B
	$B$7$^$9!%(B

	$BJQ?t$KMp?t$r@_Dj$9$k$K$O!$(B\setrandom $B%a%?%3%^%s%I$r;HMQ$7$F0J2<$N$h$&(B
	$B$K5-=R$7$^$9!%(B

	\setrandom aid 1 100000

	$B$3$l$O!$JQ?t(B aid $B$K(B 1 $B$+$i(B 100000 $B$N4V$NMp?t$r@_Dj$7$^$9!%(B

$BJQ?t$O(B SQL $B%3%^%s%I$*$h$S%a%?%3%^%s%I$+$i;2>H$G$-$^$9!%$=$l$K$O0J2<$N(B
$B$h$&$KJQ?tL>$NA0$K%3%m%s$rIU$1$^$9!%(B

SELECT abalance FROM accounts WHERE aid = :aid

$BJQ?t$rDj5A$9$k$K$O%a%?%3%^%s%I0J30$K(B -D $B%*%W%7%g%s$r;HMQ$9$k$3$H$b$G$-(B
$B$^$9!%(B -D $B%*%W%7%g%s$GDj5A$7$?JQ?t$bJQ?tL>$NA0$K%3%m%s$rIU$1$F;2>H$7$^(B
$B$9!%(B

$BNc$($P!$(BTCP-B $B$KN`;w$7$?%Y%s%A%^!<%/$r7WB,$9$k$K$O!$0J2<$N$h$&$K%H%i%s(B
$B%6%/%7%g%s$NFbMF$r%U%!%$%k$K5-=R$7!$(B-f $B%*%W%7%g%s$K$h$C$F$=$N%U%!%$%k(B
$B$r;XDj$7$F(B pgbench $B$r<B9T$7$^$9!%(B

\set nbranches :scale
\set ntellers 10 * :scale
\set naccounts 100000 * :scale
\setrandom aid 1 :naccounts
\setrandom bid 1 :nbranches
\setrandom tid 1 :ntellers
\setrandom delta 1 10000
BEGIN
UPDATE accounts SET abalance = abalance + :delta WHERE aid = :aid
SELECT abalance FROM accounts WHERE aid = :aid
UPDATE tellers SET tbalance = tbalance + :delta WHERE tid = :tid
UPDATE branches SET bbalance = bbalance + :delta WHERE bid = :bid
INSERT INTO history (tid, bid, aid, delta, mtime) VALUES (:tid, :bid, :aid, :delta, current_timestamp)
END

$B%9%1!<%j%s%0%U%!%/%?!<$r(B branches $B%F!<%V%k$N%?%W%k?t$+$i<+F0E*$K@_Dj$7(B
$B$?$$>l9g!$0J2<$N$h$&$K(B -s $B%*%W%7%g%s$H%7%'%k$N%3%^%s%ICV49$J$I$rAH$_9g(B
$B$o$;$^$9!%(B

pgbench -s $(psql -At -c "SELECT count(*) FROM branches") -f tpc_b.sql

$B$J$*!$(B-f $B%*%W%7%g%s$r;XDj$7$?>l9g!$%Y%s%A%^!<%/3+;OA0$K(B vacuum $B$H(B
history $B$N%/%j%"$O<+F0E*$K9T$o$l$^$;$s!%(B

$B"#:n<T$H%i%$%;%s%9>r7o(B

pgbench $B$O@P0f(B $BC#IW$K$h$C$F=q$+$l$^$7$?!%%i%$%;%s%9>r7o$O(B pgbench.c $B$N(B
$BKAF,$K=q$$$F$"$j$^$9!%$3$N>r7o$r<i$k8B$jL5=~$GMxMQ$7!$$^$?<+M3$K:FG[IU(B
$B$G$-$^$9!%(B

$B"#(BPostgreSQL$B$N(Bcontrib$B%b%8%e!<%k$H$7$F<h$j9~$^$l$k$^$G$N2~DjMzNr(B

2000/1/15 pgbench-1.2 $B$O(B PostgreSQL $B$K(B contribute $B$5$l$^$7$?!%(B
	* -v $B%*%W%7%g%sDI2C(B

1999/09/29 pgbench-1.1 $B%j%j!<%9(B
	* $BC+ED$5$s$K$h$k(Bcygwin$BBP1~%Q%C%A<h$j9~$_(B
	* $B%P%C%/%(%s%I%/%i%C%7%e;~$NBP1~(B
	* -S $B%*%W%7%g%sDI2C(B

1999/09/04 pgbench-1.0 $B%j%j!<%9(B