More Autovacuum questions

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Another question.

When autovacuum sleeps, does it release the lock it has on the table? 

What we would like to have happen is for vacuum to work for a while, sleep, and while it is sleeping run an analyze on the table.  We need this due to how quickly our data is changing.  Currently we are running analyze every 5 minutes against the table of question and get a very serious performance hit when vacuum runs due to the index stats getting out of date.  As soon as we rerun analyze after the vacuum happiness returns.

The pg_total_relation_size for the table in question is 64GB, and as stated above is a very heavily used and modifed table.

Thanks for any comments,

Chris

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