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Re: How to turn of the Journal logging of CoreData/Sqlite?
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Re: How to turn of the Journal logging of CoreData/Sqlite?


  • Subject: Re: How to turn of the Journal logging of CoreData/Sqlite?
  • From: Alex Zavatone <email@hidden>
  • Date: Wed, 06 Apr 2016 22:51:14 -0400

Does this help?

http://stackoverflow.com/questions/20062197/how-to-disable-wal-journal-mode

On Apr 6, 2016, at 10:21 PM, Jerry Krinock <email@hidden> wrote:

>
>> On 2016 Apr 06, at 08:27, Jens Alfke <email@hidden> wrote:
>>
>> If you’re seeing high memory utilization, it’s more likely something to do with Core Data itself. It might be a symptom of a way you’re misusing Core Data
>
> I agree, having had an experience like James’ last year.  It is a huge project; the data model had 62 entities and typical user data created a Core Data SQLite library of 100 MB or so when running properly.  Starting with no library, after importing data from the old non-Core-Data version of the app, one of those new sqlite files, I forget if it was the the -shm or the -wal, grew to 1 GB.  But the app  worked fine, and after using it for some hours, those files would shrink to the expected size of 100 MB or so, with the -shm and -wal files being much smaller than the mail file, as expected.
>
> So we ignored the problem and worked on other issues.  As the app further developed over the last half year, the problem disappeared.  That is, now when I start this app from scratch and import that same data, the library files grow slowly during the two minutes of import to a reasonable size, and stay there.
>
>
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References: 
 >How to turn of the Journal logging of CoreData/Sqlite? (From: James Cicenia <email@hidden>)
 >Re: How to turn of the Journal logging of CoreData/Sqlite? (From: Jens Alfke <email@hidden>)
 >Re: How to turn of the Journal logging of CoreData/Sqlite? (From: Jerry Krinock <email@hidden>)

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