On Tue, 26 Sep 2017 16:50:00 +0000 (UTC) Ferry Toth <ftoth@xxxxxxxxxx> wrote: > https://www.phoronix.com/scan.php?page=article&item=linux414-bcache- > raid&num=2 > > I think it might be idle hopes to think bcache can be used as a ssd cache > for btrfs to significantly improve performance.. My personal real-world experience shows that SSD caching -- with lvmcache -- does indeed significantly improve performance of a large Btrfs filesystem with slowish base storage. And that article, sadly, only demonstrates once again the general mediocre quality of Phoronix content: it is an astonishing oversight to not check out lvmcache in the same setup, to at least try to draw some useful conclusion, is it Bcache that is strangely deficient, or SSD caching as a general concept does not work well in the hardware setup utilized. -- With respect, Roman -- 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
