On Thu 06-03-08 14:05:03, Josef Bacik wrote: > On Thursday 06 March 2008 12:42:09 pm Jan Kara wrote: > > Hi, > > > > Below is my rewrite of ordered mode in JBD. Now we don't have a list of > > data buffers that need syncing on transaction commit but a list of inodes > > that need writeout during commit. This brings all sorts of advantages such > > as possibility to get rid of journal heads and buffer heads for data > > buffers in ordered mode, better ordering of writes on transaction commit, > > simplification of some JBD code, no more anonymous pages when truncate of > > data being committed happens. The patch has survived some light testing > > but it still has some potential of eating your data so beware :) I've run > > dbench to see whether we didn't decrease performance by different handling > > of truncate and the throughput I'm getting on my machine is the same (OK, > > is lower by 0.5%) if I disable the code in truncate waiting for commit to > > finish... Also the throughput of dbench is about 2% better with my patch > > than with current JBD. > > Any comments or testing most welcome. > > > > Honza > > Just one nit, doesn't compile properly when jbd/ext3 are modules :). Thanks > much, Thanks for spotting this. Will fix :). Honza -- Jan Kara <jack@xxxxxxx> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
