I'm sorry, but I've changed my setup in the meantime. Currently I'm using a RAID6 made of 9 Seagate Barracuda 7200.14 (3TB) and a single crypt device on top of the raid. I've also changed my CPU (AMD A8-5500) and am now using AES-NI to accelerate encryption.
I've done a raid grow last week, and my IOStats graph shows between 800K an 1.2M blocks per second. I've also done some quick performance tests using dd and get a write performance around 400MB/s using a blocksize of 4K. The IO graph show 300K blocks per second while my CPU is at 100% an all four cores. top shows also four different kworker processes, the dd and a _raid6 process. I guess this bug is fixes (at least for me). If I can provide any additional information, just let me know. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/997695 Title: severe performance issue using mdadm raid5 on top of LUKS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/997695/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
