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Re: Patch for testing query modes on pgbench

From: Tatsuo Ishii <ishii(at)postgresql(dot)org>
To: itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: Patch for testing query modes on pgbench
Date: 2008-03-19 00:31:04
Message-ID: 20080319.093104.62363928.t-ishii@sraoss.co.jp (view raw or flat)
Thread:
Lists: pgsql-patches
> Here is a updated patch to add query modes into pgbench in order to
> measure performance of simple protocol, extended protocol and
> prepared statements with it.
> 
> [PATCHES] Patch for testing query modes on pgbench
> http://momjian.us/mhonarc/patches/msg00335.html
> 
> A new runtime option (-M) is added:
>   -M querymode
>        Choose the query mode from the follows. default is simple.
>            - simple: using simple query protocol.
>            - extended: using extended protocol.
>            - prepared: using extended protocol with prepared statements.
> 
> ----
> Extended protocol is slower than simple protocol. I think it is a problem
> because we have to use the protocol (and cannot use prepared statements)
> in some situations, such as connectiong with JDBC to partitioned tables.
> 
> $ pgbench -S -n -c5 -t10000 -M simple
>         tps = 3567.351598 (excluding connections establishing)
> $ pgbench -S -n -c5 -t10000 -M extended
>         tps = 2877.697842 (excluding connections establishing)
> $ pgbench -S -n -c5 -t10000 -M prepared
>         tps = 4532.680627 (excluding connections establishing)
> 
> Regards,
> ---
> ITAGAKI Takahiro
> NTT Open Source Software Center

I got following:

gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline -Wendif-labels -fno-strict-aliasing -I../../src/interfaces/libpq -I. -I../../src/include -D_GNU_SOURCE   -c -o pgbench.o pgbench.c
pgbench.c: In function `parseQuery':
pgbench.c:1105: error: `var' undeclared (first use in this function)
pgbench.c:1105: error: (Each undeclared identifier is reported only once
pgbench.c:1105: error: for each function it appears in.)
pgbench.c:1092: warning: unused variable `hvar'

(note that the line number might be different what it should be in
your work file since I have applied Yoshiyuki's patches in prior).

The cause of this is obvious and easy to fix. However I wonder this is
because of accidental old or wrong patches. Can you resubmit new patches
against CVS Head?
--
Tatsuo Ishii
SRA OSS, Inc. Japan

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Subject: Re: Proposal: new large object API
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Subject: Re: Wrong result with pgbench -C option?

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