| From: | Philip Warner <pjw(at)rhyme(dot)com(dot)au> |
|---|---|
| To: | Alfred Perlstein <bright(at)wintelcom(dot)net> |
| Cc: | Jan Wieck <janwieck(at)Yahoo(dot)com>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Performance monitor signal handler |
| Date: | 2001-03-16 00:28:21 |
| Message-ID: | 3.0.5.32.20010316112821.022e91f0@mail.rhyme.com.au |
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| Lists: | pgsql-hackers |
At 16:17 15/03/01 -0800, Alfred Perlstein wrote:
>
>Lost data is probably better than incorrect data. Either use locks
>or a copying mechanism. People will depend on the data returned
>making sense.
>
But with per-backend data, there is only ever *one* writer to a given set
of counters. Everyone else is a reader.
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