> > Is that generally the case on your systems? Every linux system I've > > run, regardless of RAM, has always pushed things out to swap. > > For me, it is generally the case yes. We are still discussing this in the > context of desktop machines and their problems with being slow as things > have been swapped out and generally I expect a desktop to have plenty of > swap which it's not regularly going to fillup significantly since then the > machine's unworkably slow as a desktop anyway.
A simple log optimises writeout (which is latency critical) and can otherwise stall an enitre system. In a log you can also have multiple copies of the same page on disk easily, some stale - so you can write out chunks of data that are not all them removed from memory, just so you get them back more easily if you then do (and I guess you'd mark them accordingly) The second element is a cleaner - something to go around removing stuff from the log that is needed when the disks are idle - and also to repack data in nice linear chunks. So instead of using the empty disk time for page-in you use it for packing data and optimising future paging. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
