On Thursday 25 January 2007 21:45, Michael Tokarev wrote: > Phillip Susi wrote: > > Denis Vlasenko wrote: > >> You mean "You can use aio_write" ? > > > > Exactly. You generally don't use O_DIRECT without aio. Combining the > > two is what gives the big win. > > Well, it's not only aio. Multithreaded I/O also helps alot -- all this, > say, to utilize a raid array with many spindles. > > But even single-threaded I/O but in large quantities benefits from O_DIRECT > significantly, and I pointed this out before.
Which shouldn't be true. There is no fundamental reason why ordinary writes should be slower than O_DIRECT. -- vda - 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/
