Re: BUG #2442: Problemas accessing DB in a multithread pross - Mailing list pgsql-bugs

From Qingqing Zhou
Subject Re: BUG #2442: Problemas accessing DB in a multithread pross
Date
Msg-id e4gkh7$27rv$1@news.hub.org
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In response to BUG #2442: Problemas accessing DB in a multithread pross  ("Carmen" <carmenlucia@globo.com>)
List pgsql-bugs
""Carmen"" <carmenlucia@globo.com> wrote
>
> I have a Windows system accesing a FreeBSD PostGres 8.0.
> I have a multihread process in Windows using a PostGres 8.0 FreeBSD. Each
> thread of this process has a TCP communicaction with a remote client and
it
> updates a common BD of the global process.
> TEach time two threads access a SQL API at the axact sametiem, the
> process(not just the thread) is aborted. I resolved this problem defining
a
> critical section for each API SQL acess, but it has been causing a great
> delay in my realtime program.
>

What SQL API exactly? I once rewrite Pgbench (the TPCB benchmark) as a
multi-threaded version in Windows, there is no obvious problem (the patch
can be found in pg-patches). Just to make sure that each thread use a
different connection.

Regards,
Qingqing

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