Horton

Re: pgbench cpu overhead (was Re: lazy vxid locks, v1)

Itagaki Takahiro <itagaki.takahiro@gmail.com>

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From: Itagaki Takahiro <itagaki.takahiro@gmail.com>
To: Alvaro Herrera <alvherre@commandprompt.com>
Cc: Jeff Janes <jeff.janes@gmail.com>, Stefan Kaltenbrunner <stefan@kaltenbrunner.cc>, pgsql-hackers <pgsql-hackers@postgresql.org>, Robert Haas <robertmhaas@gmail.com>
Date: 2011-06-14T04:21:50Z
Lists: pgsql-hackers

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  1. Avoid extra system calls to block SIGPIPE if the platform provides either

On Tue, Jun 14, 2011 at 13:09, Alvaro Herrera
<alvherre@commandprompt.com> wrote:
> I noticed that pgbench's doCustom (the function highest in the profile
> posted) returns doing nothing if the connection is supposed to be
> "sleeping"; seems an open door for busy waiting.

pgbench uses select() with/without timeout in the cases, no?

-- 
Itagaki Takahiro