| From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: scanner/parser minimization |
| Date: | 2013-03-01 15:33:48 |
| Message-ID: | 5130CA5C.6060406@gmx.net |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2/28/13 3:34 PM, Robert Haas wrote:
> It's
> possible to vastly reduce the size of the scanner output, and
> therefore of gram.c, by running flex with -Cf rather than -CF, which
> changes the table representation completely. I assume there is a
> sound performance reason why we don't do this, but it might be worth
> checking that if we haven't lately. When compiled with -Cf, the size
> of gram.o drops from 1019260 bytes to 703600, which is a large
> savings.
The option choice is based on the recommendation in the flex manual. It
wouldn't hurt to re-test it.
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Alvaro Herrera | 2013-03-01 15:37:43 | Re: Optimizing pglz compressor |
| Previous Message | Heikki Linnakangas | 2013-03-01 15:28:20 | Optimizing pglz compressor |