04-28-2019, 04:40 AM | #1 |
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How many books in a library?
Has anybody tested, how many titles can be stored with Microsoft Windows 10 in the latest version of Calibre?
Is there a maximum number of books to keep in one library? I read about a reduced speed (for access) when the limmit is reached. And is it possible to join to libraries ? Thanks for your answers. |
04-28-2019, 10:43 AM | #2 |
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Do you have a 6T drive? Books just take drive space in Calibre.
All it keeps in the DB is metadata, so Maxing out your RAM on a 64bit system should handle that for all but insane sized commercial libraries. Yes, there is a bit of slow down, but nothing like we saw back in the days of the PCAT (286 w/2M RAM 40M HD). (right-click) Copy to Library will merge selected books into the designated Library. IMHO reasons for separate Libraries: Security. PG/Adult material kept separate Significant Metadata (custom field) differences. Wide tables are bloat if they exist only for a small % of the records Drive space: remember, Calibre can only run on LOCAL attached drives. No NAS or shares for the Libraries used by Calibre. |
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04-28-2019, 06:15 PM | #3 |
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↑ ↑ ↑ ✔️
Where did you read "...about a reduced speed (for access) when the limmit is reached" and when was it written? I've been using calibre for almost 7 years, my perception is that its gotten faster over time. It's about the same on my current 16GB, i7-7700 as it was on my old 6GB i5-2300 with much slower storage devices and graphics. The only time I ever noticed it was slow was when I put it on a Dell Alien Alpha gaming box, but so was everything else My biggest library just topped 150,000 books, I have other libraries between 100 and 8,000 books, performance is about the same on all of them, including start up times which is sub 10 seconds. Scrolling the list is pretty much instantaneous, as is searching and virtual library switching. Tools that access the ebook file contents - e.g. conversion, plugins such as Count pages etc, will have delays, but most of them run in the background which means you can do other things if they're long running. But those delays have nothing to do with the size of the library. My reason for several libraries is that I want different custom columns for different content - books, audio/video, papers - and there's not a lot of commonality between them. BR |
04-28-2019, 08:38 PM | #4 |
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Iirc, biggest capacity HDD right now is 14TB. With $100 sales on 6-10TB drives becoming more frequent this one's easily within the realm of possibility (assuming one has enough content). I shudder to think what performance will be like though.
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04-28-2019, 10:28 PM | #5 |
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Yep. I have a 2T Black, and I am forever waiting on the cache to catch up with a lowly core duo 8G RAM. Bigger would probably just be slower.
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04-29-2019, 01:24 AM | #6 |
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04-29-2019, 01:29 AM | #7 |
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the way SSD drive prices are falling, you will be able to have 1Tb or more of SSD.
1TB now is selling in uk at what I paid for 500Gb a year ago ! I already have 500GB SSD C drives on 2 PCs, so my calibre library runs from SSD. but I don't recall it ever being slow back when I had Spinning drives. I put the old 250G ones into USB caddies to use as additional console storage and speed up game loading. I expect to see cost of of non SSD hard drives go up as sales decline and manufacturing capacity shuts down |
04-29-2019, 02:24 AM | #8 | |
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Quote:
A more modern CPU with plenty of DDR4 RAM and metadata.db on SSD would probably fare much better. |
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04-29-2019, 02:29 AM | #9 |
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surely calibre keeps the metadata.db in RAM, so it is always available- if you use quit to mimimised and never actually shut it down ?
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04-29-2019, 02:42 AM | #10 | |
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Quote:
With my usage, I need the SSD. I do a lot of bulk edit and library maintenance operations and those are definitely faster on SSD. |
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04-29-2019, 03:00 AM | #11 | |
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Quote:
Mind, Windows does a lot of background disk operations on the OS drive. If one still uses mechanical HDDs for OS, just moving the Calibre library to a different disk can net significant performance gains depending on the task. https://www.mobileread.com/forums/sh...d.php?t=311440 |
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04-29-2019, 03:47 AM | #12 | |
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By the way, is there significant impact when using different type of HDD just calibre use?,
for example WD, Quote:
Last edited by yonkyunior; 04-29-2019 at 03:51 AM. |
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04-29-2019, 03:52 AM | #13 |
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04-29-2019, 04:02 AM | #14 |
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04-29-2019, 04:14 AM | #15 |
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Not much really. Just a tip, instead of buying a high performance HDD, buy a 4TB HDD or something and short stroke (only format/use the first 2TB). That should help reduce seek times and would probably still cost less than the high performance HDD.
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count of books, library books |
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