| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, toruvinn <toruvinn(at)lain(dot)pl>, pgsql-bugs(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: [PERFORM] BUG #4919: CREATE USER command slows down system performance |
| Date: | 2009-08-08 16:02:06 |
| Message-ID: | 16154.1249747326@sss.pgh.pa.us |
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| Lists: | pgsql-bugs pgsql-performance |
Bruce Momjian <bruce(at)momjian(dot)us> writes:
> Tom Lane wrote:
>> Now that we have SQL-level CONNECT privilege, I wonder just how much
>> functionality would be lost if we got rid of the flat files and told
>> people they had to use CONNECT to do any per-user or per-database
>> access control.
>>
>> The main point I can see offhand is that password checking would have
>> to be done a lot later in the startup sequence, with correspondingly
>> more cycles wasted to reject bad passwords.
> Is this a TODO?
Well, it's a TO-THINK-ABOUT anyway. I think the appropriate next step
would not be to write code, but to do a detailed investigation of what
would be gained or lost. I don't remember exactly what we do with the
flat-file contents.
regards, tom lane
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