On 15 September 2017 at 18:08, Kai Krakow <hurikhan77@xxxxxxxxx> wrote: [..] > According to Tomasz, your tests should not run at vastly different > speeds because fragmentation has no impact on performance, quod est > demonstrandum... I think we will not get to the "erat" part. No. This is not precisely what I'm trying to tell. Now however seeing that there is no precise/fully repeatable methodology of performing proposed test I have huge doubts about what is reported has effect has anything to do do with fragmentation or it is side effect of using COW (which allow glue some number random updates into larger sequential write IOs). kloczek -- Tomasz Kłoczko LinkedIn: http://lnkd.in/FXPWxH -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
