| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [PATCHES] log session end - again |
| Date: | 2004-02-03 16:56:06 |
| Message-ID: | 19327.1075827366@sss.pgh.pa.us |
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| Lists: | pgsql-hackers pgsql-patches |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Andrew Dunstan wrote:
>> Bruce and others have suggested that PID is not sufficiently unique.
> The nice things about using xid for session id is that is is unique for
> a long time, rather than pid.
Hmm. Now that I think about it, InitPostgres() always runs a
transaction during backend startup. If we simply saved aside the XID
assigned to that transaction, it would cost next to nothing to do and
would provide a reasonably unique ID. However, this happens much later
than the postmaster currently prints the log_connection message ...
regards, tom lane
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