Hello, i run a few performance tests comparing mdadm, hardware raid and the btrfs raid. I noticed that the performance for small blocksizes (2k) is very bad on SSD in general and on HDD for sequential writing. I wonder about that result, because you say on the wiki that btrfs is very effective for small files. I attached my results from raid 1 random write HDD (rH1), SSD (rS1) and from sequential write HDD (sH1), SSD (sS1) Hopefully you have an explanation for that. raid@raid-PowerEdge-T630:~$ uname -a Linux raid-PowerEdge-T630 4.10.0-33-generic #37~16.04.1-Ubuntu SMP Fri Aug 11 14:07:24 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux raid@raid-PowerEdge-T630:~$ btrfs --version btrfs-progs v4.4 best regards Carsten
Attachment:
rH1.png
Description: rH1.png
Attachment:
rS1.png
Description: rS1.png
Attachment:
sH1.png
Description: sH1.png
Attachment:
sS1.png
Description: sS1.png
