From: Alvaro Herrera <alvherre@commandprompt.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Scott Carey <scott@richrelevance.com>
Cc: Craig Ringer <craig@postnewspapers.com.au>
Cc: Peter Schuller <peter.schuller@infidyne.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Identifying the nature of blocking I/O
Date: Sun, 24 Aug 2008 22:16:09 -0400
Message-ID: <20080825021609.GF4506@alvh.no-ip.org> (raw)
In-Reply-To: <1028.1219628991@sss.pgh.pa.us>
References: <20080822115243.GA10981@hyperion.scode.org>
<48B1FD1A.7040807@postnewspapers.com.au>
<a1ec7d000808241834v48122c83s385a8439253994bc@mail.gmail.com>
<1028.1219628991@sss.pgh.pa.us>
Tom Lane wrote:
> "Scott Carey" <scott@richrelevance.com> writes:
> > DTrace is available now on MacOSX, Solaris 10, OpenSolaris, and FreeBSD.
> > Linux however is still in the dark ages when it comes to system monitoring,
> > especially with I/O.
>
> Oh, after poking around a bit, I should note that some of my Red Hat
> compatriots think that "systemtap" is the long-term Linux answer here.
> I know zip about it myself, but it's something to read up on if you are
> looking for better performance monitoring on Linux.
FWIW there are a number of tracing options on Linux, none of which is
said to be yet at the level of DTrace. See here for an article on the
topic: http://lwn.net/Articles/291091/
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: alvherre@commandprompt.com, tgl@sss.pgh.pa.us, scott@richrelevance.com, craig@postnewspapers.com.au, peter.schuller@infidyne.com
Subject: Re: Identifying the nature of blocking I/O
In-Reply-To: <20080825021609.GF4506@alvh.no-ip.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox