On Mon, Dec 03, 2012 at 12:54:30PM +0100, Swâmi Petaramesh wrote: > Hi folks, > > My laptop is a Core i3-2310M with 4 GB RAM, running BTRFS on a 1 TB HD. > > I run Ubuntu 12.10 Quantal, kernel 3.5.0-19-generic 64-bit. Try 3.7. That's had some significant performance improvements. 3.5 is over 6 months old, which is a long time in btrfs development. > I wanted to give a shot at bitcoin so I installed it from the Ubuntu > PPA, and started getting the database from the Internet. (it's now 4.5 > GB big on disk). I assume it an SQL DB (SQlite or so ?) Try marking the SQLite database file(s) as nocow, with chattr +C. That also only works on 3.7, but should deal with your database problems. > My system currently has been crushing its data for more that 5 days now > (5x24 hours) with the HD busy to the point that the system is completely > unusable and I had to take another laptop to be able to surf the web and > process my email. Disk LED is steadily lit, trying to switch between 2 > open windows takes 5 minutes or so... > > Entering new blocks into the DB has now slowed down to the point that I > assume that the last 6% that I miss (I'm now at 94.something %) may well > take another couple weeks or so... > > Friends running ext4 told me that the initial loading of the DB took > them a couple hours... With BTRFS it's been 5x24 hours and counting... :-( > > This filesystem is pure crap as soon as it comes to database processing :-( 3.5 was. 3.7 shouldn't be -- particularly with the use of +C on the database files. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- "No! My collection of rare, incurable diseases! Violated!" ---
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