Importing large datasets #114

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opened 2025-12-29 15:24:49 +01:00 by adam · 2 comments

adam commented 2025-12-29 15:24:49 +01:00

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Originally created by @terenzeyuen on GitHub (Dec 16, 2016).

We noticed whenever we trigger commit with large imports (30k record), UI thread stalls for a few seconds. Is this normal? @JohnEstropia

Originally created by @terenzeyuen on GitHub (Dec 16, 2016). We noticed whenever we trigger commit with large imports (30k record), UI thread stalls for a few seconds. Is this normal? @JohnEstropia

adam added the question label 2025-12-29 15:24:49 +01:00

adam closed this issue 2025-12-29 15:24:49 +01:00

adam commented 2025-12-29 15:24:49 +01:00

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@JohnEstropia commented on GitHub (Dec 16, 2016):

Do you use ListMonitors? Saving objects will trigger updates on monitors, which notifies the UI on the main thread. So if you save a lot of objects at once those will have noticeable effects on the UI.

My suggestion is to save your 30k records into chunks. Say, one beginAsynchronous for each 1000 items.

@JohnEstropia commented on GitHub (Dec 16, 2016): Do you use ListMonitors? Saving objects will trigger updates on monitors, which notifies the UI on the main thread. So if you save a lot of objects at once those will have noticeable effects on the UI. My suggestion is to save your 30k records into chunks. Say, one `beginAsynchronous` for each 1000 items.

adam commented 2025-12-29 15:24:50 +01:00

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@terenzeyuen commented on GitHub (Dec 29, 2016):

Thanks !

@terenzeyuen commented on GitHub (Dec 29, 2016): Thanks !

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Reference: starred/CoreStore#114