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Re: Snapshot management, final
- From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
- To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
- Cc: Simon Riggs <simon(at)2ndquadrant(dot)com>, Pg Patches <pgsql-patches(at)postgresql(dot)org>
- Subject: Re: Snapshot management, final
- Date: Wed, 23 Apr 2008 08:24:36 -0400
- Message-id: <20080423122436(dot)GB4768(at)alvh(dot)no-ip(dot)org>
Tom Lane wrote: > The only reason we have memory contexts at all is to avoid the need to > track individual palloc'd objects. Since we're instituting exactly such > tracking for snapshots, there's no value in placing them in > general-purpose memory contexts. FWIW I noticed yesterday after going to bed that SnapshotContext serves no useful purpose -- we can just remove it and store snaps in TopTransactionContext. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support
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