Scan previews EXTREMELY SLOW

Originator:eric.trepanier
Number:rdar://20308311 Date Originated:26-Mar-2015 09:03 AM
Status:Open Resolved:
Product:OS X Product Version:10.10
Classification:Performance Reproducible:Always
 
Summary:
Obtaining Text type Scan previews takes an excessive amount of time (> 2 minutes) while the scans themselves complete under a few seconds.

Steps to Reproduce:
1. Launch Preview
2. File -> Import from Scanner…
3. Show Details, make sure "Text" type is selected
4. Wait for scan preview

Expected Results:
Scan preview should complete as quickly (if not faster) as a regular scan.

Actual Results:
Scan preview takes close to 2 minutes to complete.

Version:
10.10.3 (14D113c)

Notes:
Scan previews are slightly faster when using "Black and White" or "Color" but still takes close to a minute to complete while an actual scan operation completes under mere seconds.

I have observed the same slow scan preview behaviour with a Wi-Fi connected Epson WF-2540 printer.

This is a regression from earlier behaviour. I have used the same scanners on a different computers running OS X Mavericks and scan previews completed much more quickly (in seconds instead of minutes).

Configuration:
Running OS X Preview on an iMac 5K with Retina, connected via Ethernet connection with HP Officejet Pro 8610 printer.

Comments


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