| From: | "Simon Riggs" <simon(at)2ndquadrant(dot)com> |
|---|---|
| To: | "Heikki Linnakangas" <heikki(at)enterprisedb(dot)com> |
| Cc: | "Patches" <pgsql-patches(at)postgresql(dot)org> |
| Subject: | Re: A little COPY speedup |
| Date: | 2007-03-02 10:25:18 |
| Message-ID: | 1172831119.3760.1367.camel@silverbirch.site |
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| Thread: | |
| Lists: | pgsql-patches |
On Fri, 2007-03-02 at 10:09 +0000, Heikki Linnakangas wrote:
> Well, there's one big change: your patch to suppress WAL logging on
> tables created in the same transaction.
OK, just checking thats what you meant.
> All the page locking related functions account for ~10% in total,
> including the LWLockAcquire/Release, Pin/UnBuffer, hash_any and so on.
> And then there's all the memcpying...
I think its a great spot that PageAddItem() was so bad. I realise I
didn't actually look at what it was doing, just looked at ways to avoid
doing it on each individual call to the block for each row.
--
Simon Riggs
EnterpriseDB http://www.enterprisedb.com
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