On Thu, Jul 29, 2010 at 02:59:51PM -0500, James Bottomley wrote: > That's basically everything FUA ... you might just as well switch your > cache to write through and have done. > > This, by the way, is one area I'm hoping to have researched on SCSI > (where most devices do obey the caching directives). Actually see if > write through without flush barriers is faster than writeback with flush > barriers. I really suspect it is. We have done the research and at least for XFS a write through cache actually is faster for many workloads. Ric always has workloads where the cache is faster, though - mostly doing lots of small file write kind of setups. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
