From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> |
Cc: | zakkr(at)zf(dot)jcu(dot)cz, pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: encoding names |
Date: | 2001-08-16 13:43:30 |
Message-ID: | 9446.997969410@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> writes:
> Thanks. BTW, I'm working on for dynamically loading the Unicode
> conversion functions to descrease the runtime memory requirement. The
> reason why I want to do this is:
> o they are huge (--enable-unicode-conversion will increase ~1MB in the
> load module size)
> o nobody will use all of them at once. For example most Japanese users
> are only interested in EUC/SJIS maps.
But is it really important? All Unixen that I know of handle process
text segments on a page-by-page basis; pages that aren't actually being
touched won't get swapped in. Thus, the unused maps will just sit on
disk, whether they are part of the main executable or a separate file.
I doubt there's any real performance gain to be had by making the maps
dynamically loadable.
regards, tom lane
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