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Re: Converting postgresql.conf parameters to kilobytes

From: Greg Stark <gsstark(at)mit(dot)edu>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Converting postgresql.conf parameters to kilobytes
Date: 2004-06-04 14:25:41
Message-ID: 87n03j1jtm.fsf@stark.xeocode.com (view raw or flat)
Thread:
Lists: pgsql-hackers
Marko Karppinen <marko(at)karppinen(dot)fi> writes:

> Frank Wiles wrote:
> >   shared_buffers = 10000     ( shared_buffers in pages )
> >   shared_buffers = 100M      ( 100 MBs of shared_buffers )
> >   shared_buffers = 2048K     ( 2MBs of shared_buffers )
> 
> I don't know if this is pedantic or just obsessive-compulsive,
> but I think it should be MB and KB (or more properly, kB)
> instead of just M and K, to distinguish from kilopages
> or megapages.

Well, that's not how other tools handle it. I would suggest being consistent
with the rest of the more user friendly unix toolset that does this. GNU dd
for example uses these suffixes:

> BLOCKS and BYTES may be followed by the following multiplicative suffixes:
> xM M, c 1, w 2, b 512, kB 1000, K 1024, MB 1000*1000, M 1024*1024,
> GB 1000*1000*1000, G 1024*1024*1024, and so on for T, P, E, Z, Y.

(Though in this case the base unit is unambiguous because of the parameter.
But other examples are the output of ls -lh, the -c and -n parameters of head,
etc)

-- 
greg


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