Trying it without the DB_PRIVATE flag in rev 153. We need to keep an eye on what's different. On Windows at least, it creates six __db.001 - __db.006 files with sizes from 24K to 4MB. It doesn't delete them on exit, it just leaves them behind. The docs say it uses memory mapped files. I assume they have the same file permissions as the database files, so the same user access restrictions apply. Tests on Windows private LAN download of 78500 blocks: with DB_PRIVATE 20 minutes 51 seconds without DB_PRIVATE 20 minutes 51 seconds I wasn't expecting them to come out exactly the same.
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