Hi Thomas, I've sent you a private email with a link to the new database file, made with H2 1.4.178
Regards, Steve On Monday, 5 May 2014 07:46:16 UTC+2, Thomas Mueller wrote: > > Hi, > > The database file should shrink if you run "shutdown defrag". > > The current compact algorithm is quite inefficient, that means the > databases file is quite big on average. The highest priority is still to > ensure it always works correctly, and when that's done I will work on more > efficiently re-using disk space and specially compact the file faster when > closing the database. > > Could you send me the new database file? It would be nice to have a > real-world database file to test this. The last file you sent helped a lot, > thanks to it I found some problems that completely prevented the file to > shrink. > > Regards, > Thomas > > > > On Sunday, May 4, 2014, Steve McLeod <[email protected] <javascript:>> > wrote: > >> Hi Thomas, >> >> I tested the same large data import with H2 1.4.178, and there is no >> improvement over H2 1.4.177. >> >> Here are the file sizes, in both cases after the app has stopped: >> >> H2 1.3.176: pokercopilot.h2.db 301,669,352 bytes >> H2 1.4.178: pokercopilot.mv.db 1,023,037,440 bytes >> >> Let me know what I can do to help. >> >> Regards, >> >> Steve >> >> >> On Saturday, 19 April 2014 11:44:05 UTC+2, Steve McLeod wrote: >> >> Hi Thomas, >> >> Great! Glad I could help make your superb product even better. >> >> >> >> On Friday, 18 April 2014 21:38:27 UTC+2, Thomas Mueller wrote: >> >> Hi, >> >> Thanks a lot for the database! I know what the problem is now, but I >> couldn't fix it yet. The database file (pokercopilot2.mv.db) has about 181 >> MB of "live" data, the rest (about 78%) is not used. The mechanism to get >> rid of the unused space is not working as it should for this case (I think >> the problem is that b-tree nodes are not processed correctly). This will be >> fixed in the next release. >> >> Regards, >> Thomas >> >> >> On Fri, Apr 18, 2014 at 5:29 PM, Steve McLeod <[email protected]>wrote: >> >> Hi Thomas, >> >> I've sent a link to file privately to your email address. >> >> Regards, >> >> Steve >> >> >> >> On Friday, 18 April 2014 14:04:37 UTC+2, Thomas Mueller wrote: >> >> Hi, >> >> Hm, that didn't help much. Could you send me the (compressed) database >> files please? If it's too big, what is the compressed size of the files? >> >> Regards, >> Thomas >> >> >> On Fri, Apr 18, 2014 at 1:07 PM, Steve McLeod <[email protected]>wrote: >> >> Hi Thomas, >> >> Thanks for the suggestion. I tried adding ";retention_time=1000" to the >> URL, and this resulted in a small improvement. >> >> pokercopilot.h2.db 302,018,560 bytes >> pokercopilot.mv.db 999,120,896 bytes >> pokercopilot.mv.db with RETENTION_TIME=1000: 811,728,896 bytes >> >> These numbers all reflect a loading of data in a newly created database >> that consisted of roughly 2,400,000 INSERTS and UPDATES with plenty of >> SELECTS and almost no DELETES. After the loading was complete, I let the >> application keep running with the database open for a few minutes, then >> close the application and therefore the database. >> >> Here is the full JDBC url I'm using: >> jdbc:h2:/Users/steve/Library/Application Support/com.barbarysoftware.po >> kercopilot/database/pokercopilot;DATABASE_EVENT_LISTENER=' >> com.barbarysoftware.pokercopilot.database.DatabaseListener';COMPRESS_ >> LOB=DEFLATE;CACHE_SIZE=65536;RETENTION_TIME=1000 >> >> Let me know if there is anything else I can do to help diagnose this. >> >> Regards, >> >> Steve >> >> >> >> >> On Thursday, 17 April 2014 17:15:50 UTC+2, Thomas Muel >> >> -- >> You received this message because you are subscribed to the Google Groups >> "H2 Database" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/h2-database. >> For more options, visit https://groups.google.com/d/optout. >> > -- You received this message because you are subscribed to the Google Groups "H2 Database" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/h2-database. For more options, visit https://groups.google.com/d/optout.
