Re: LDC - Load Distributed Checkpoints with PG8.3b2 on Solaris

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От Gregory Stark
Тема Re: LDC - Load Distributed Checkpoints with PG8.3b2 on Solaris
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Msg-id 87sl37x1ma.fsf@oxford.xeocode.com
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Ответ на Re: LDC - Load Distributed Checkpoints with PG8.3b2 on Solaris  (Heikki Linnakangas <heikki@enterprisedb.com>)
Ответы Re: LDC - Load Distributed Checkpoints with PG8.3b2 on Solaris  (Alvaro Herrera <alvherre@alvh.no-ip.org>)
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"Heikki Linnakangas" <heikki@enterprisedb.com> writes:

> Tom Lane wrote:
>> Looking at the autovacuum log output, 
>>
>>> 2007-11-13 09:21:19.830 PST 9458  LOG:  automatic vacuum of table
>>> "specdb.public.txn_log_table": index scans: 1
>>>         pages: 11 removed, 105 remain
>>>         tuples: 3147 removed, 40 remain
>>>         system usage: CPU 0.11s/0.09u sec elapsed 6.02 sec
>>
>> it seems like a serious omission that this gives you no hint how many
>> pages were scanned.
>
> Isn't it pages removed + remain? 116 in this case.

How do 40 tuples take 105 pages?

--  Gregory Stark EnterpriseDB          http://www.enterprisedb.com Ask me about EnterpriseDB's Slony Replication
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