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BetterRed · 09-02-2014, 09:53 AM

Just for the giggle, I used the QC PI to swap last & first names on 137 authors, 181 books, 36 books had videos of 3-5GB - it was done in a second or two as I watched the author folders change before my very own eyes in my file manager. Given all the files were renamed I conclude that the files are moved using hardlinks, either by calibre itself or the file system - if they had been copying it would have taken about 4m40s

I conclude that there is nothing wrong with the QC PI, its working the same today as it was last week, last month... That one user in say 10% of 3.5M (Usage Statistics) has a performance problem, suggests to me that the problem is localised to that user's environment.

Hoods7070

if the drive that your library is sitting on is a FAT 32 drive, then swapping names will take longer because the actual files are copied and renamed. On an NTFS drive its done via a hardlink create/rename and hardlink delete which all happens in the MFT which is preallocated space and contiguous sectors - and hardlinks are very small, 128 bytes rings a bell - MFT entries are not sector bound.

BR

09-02-2014, 09:53 AM	#746
BetterRed null operator (he/him) Posts: 20,582 Karma: 26954694 Join Date: Mar 2012 Location: Sydney Australia Device: none	Just for the giggle, I used the QC PI to swap last & first names on 137 authors, 181 books, 36 books had videos of 3-5GB - it was done in a second or two as I watched the author folders change before my very own eyes in my file manager. Given all the files were renamed I conclude that the files are moved using hardlinks, either by calibre itself or the file system - if they had been copying it would have taken about 4m40s I conclude that there is nothing wrong with the QC PI, its working the same today as it was last week, last month... That one user in say 10% of 3.5M (Usage Statistics) has a performance problem, suggests to me that the problem is localised to that user's environment. Hoods7070 if the drive that your library is sitting on is a FAT 32 drive, then swapping names will take longer because the actual files are copied and renamed. On an NTFS drive its done via a hardlink create/rename and hardlink delete which all happens in the MFT which is preallocated space and contiguous sectors - and hardlinks are very small, 128 bytes rings a bell - MFT entries are not sector bound. BR Last edited by BetterRed; 09-02-2014 at 10:02 AM.