Bug 501898

Summary:	Extremely slow SQLite → SQLite database migration process to NVME SSD
Product:	[Applications] digikam	Reporter:	korwin <korwin+kde.org>
Component:	Database-Migration	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	metzpinguin
Priority:	NOR
Version First Reported In:	8.6.0
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description korwin 2025-03-23 10:25:24 UTC

§ STEPS TO REPRODUCE

1. Create a 2.5 GB SWLite database on a (slow) 5400 rpm HDD
2. Run its migration to a (fast) NVME SSD while preserving the database format

§ OBSERVED RESULT

Windows Process Manager shows:
• Source disk usage is around 0-1%;
• Target disk usage is around 95-100%;
• Transfer speed is around 1.5-2.0 MB/s.

§ EXPECTED RESULT

With read speeds from this HDD around 100MB/s, I expect the migration to complete in a few minutes.

§ SOFTWARE/OS VERSIONS

Microsoft Windows 10.0.19045.5608 (22H2)
KDE Frameworks: 6.10.0
Qt: Using 6.8.1 and built against 6.8.1
Build ABI: x86_64-little_endian-llp64
Kernel: winnt 10.0.19045

§ Additional info

• Overall progress is 13% in 15 hours.
• CrystalDiskInfo shows no problems for these disks.

Comment 1 Maik Qualmann 2025-03-23 10:26:53 UTC


*** This bug has been marked as a duplicate of bug 325653 ***