MobileRead Forums - View Single Post

BetterRed · 03-09-2014, 07:56 PM

I removed 2GB of memory, so I now have 4GB

Metadata Edit termination has barely changed, maybe < 1 second to < 2 seconds. To test (in my media library 7000 books) I changed 5 standard columns - including 1 Title correction (INsied to Inside) and 10 custom columns. And I downloaded the metadata for a regular book.

If I edit cells in the book list, the time to Tab to the next cell appears to be a tad slower than it is with 6GB - but it's marginal.

Looking at calibre in Task Manager I don't see it thrashing, the number of read and write operations is modest when I change something. Each field changed in Metadata edit seems to add about 20 writeops to a base of about 100, and 40 readops to a base of about 70. There's 16 writeops for the opf file, when cells are edited this occurs for every cell, with Metadata Edit its once only.

I'm wondering if its "some program is wired into real memory", maybe a service that's always loaded, even in Safe mode.

The gigabyte program that monitors my temps, starts fans etc, thrashes the disks more than calibre does. When I did the 4GB tests my AV scanner was doing its morning run, and the content indexer found itself something to do and wrote 3GB of something.

So... I dunno. Anyway I found the OP a solution, even though I don't really understand why it is so. That's the second one in a few days - giving calibre its own Temp folder was the other one, dunno why it worked either.

BR

03-09-2014, 07:56 PM	#59
BetterRed null operator (he/him) Posts: 21,829 Karma: 30277270 Join Date: Mar 2012 Location: Sydney Australia Device: none	I removed 2GB of memory, so I now have 4GB Metadata Edit termination has barely changed, maybe < 1 second to < 2 seconds. To test (in my media library 7000 books) I changed 5 standard columns - including 1 Title correction (INsied to Inside) and 10 custom columns. And I downloaded the metadata for a regular book. If I edit cells in the book list, the time to Tab to the next cell appears to be a tad slower than it is with 6GB - but it's marginal. Looking at calibre in Task Manager I don't see it thrashing, the number of read and write operations is modest when I change something. Each field changed in Metadata edit seems to add about 20 writeops to a base of about 100, and 40 readops to a base of about 70. There's 16 writeops for the opf file, when cells are edited this occurs for every cell, with Metadata Edit its once only. I'm wondering if its "some program is wired into real memory", maybe a service that's always loaded, even in Safe mode. The gigabyte program that monitors my temps, starts fans etc, thrashes the disks more than calibre does. When I did the 4GB tests my AV scanner was doing its morning run, and the content indexer found itself something to do and wrote 3GB of something. So... I dunno. Anyway I found the OP a solution, even though I don't really understand why it is so. That's the second one in a few days - giving calibre its own Temp folder was the other one, dunno why it worked either. BR Last edited by BetterRed; 03-09-2014 at 08:16 PM.