Re: [HACKERS] A Better External Sort?

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От Steinar H. Gunderson
Тема Re: [HACKERS] A Better External Sort?
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Msg-id 20051006001239.GB7856@uio.no
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Ответ на Re: [HACKERS] A Better External Sort?  ("Luke Lonergan" <llonergan@greenplum.com>)
Ответы Re: [HACKERS] A Better External Sort?  ("Luke Lonergan" <llonergan@greenplum.com>)
Список pgsql-performance
On Wed, Oct 05, 2005 at 04:55:51PM -0700, Luke Lonergan wrote:
> In COPY, we found lots of libc functions like strlen() being called
> ridiculous numbers of times, in one case it was called on every
> timestamp/date attribute to get the length of TZ, which is constant.  That
> one function call was in the system category, and was responsible for
> several percent of the time.

What? strlen is definitely not in the kernel, and thus won't count as system
time.

/* Steinar */
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