Re: Core Data, SQLite, and Housekeeping
Re: Core Data, SQLite, and Housekeeping
- Subject: Re: Core Data, SQLite, and Housekeeping
- From: Jens Alfke <email@hidden>
- Date: Wed, 5 Mar 2008 11:38:54 -0800
On 5 Mar '08, at 9:15 AM, I. Savant wrote:
Okay, well that sucks. So now the question is this: does Core Data
implicitly run VACUUM? If so, when? How often? Unfortunately googling
and archive-searching did not produce any obvious answers to this
particular question. My guess is that the answer is, "Yes, at every
save,"
I don't know the answer; but it probably doesn't vacuum at every save.
Vacuuming can be quite slow if the database is at all large,
especially if there's already a lot of disk I/O going on. (The vacuum
algorithm has to read and write every page of the database.)
—Jens
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