Am Sonntag, 9. Dezember 2012 schrieb Martin Steigerwald: > Hi! > > I have BTRFS on some systems since more than two years. My experience so > far is: Performance at the beginning is pretty good, but some of my more > often used BTRFS filesystem degrade badly in different areas. On some > workloads pretty quickly. > > There are also some fs however that did not degrade that badly. These were > some that have way more free space left than the ones that degraded > badly. About 900 GB freespace left on my eSATA backup disk with BTRFS > that is also quite new. About 80 GB left on my BTRFS RAID 1 local home disk > where I can build debian packages or kernels and such without the restrictions > NFS brings (root squash). These still appear to be fine, but I redid the local > home one with mkfs.btrfs -n 32768 and -l 32768 not to long ago, but I > think it was quite fine before anyway, so I might have overdone it here. > This already points at a way to prevent some degradation BTRFS filesystems: > Leave more free space. I also do not use them regularily as in each day. Backup disk just every two weeks or so. Local home sometimes each day a week, then not at all for weeks. -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- 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
