OS6 now works on x86 Legacy WARNING: NO NTGR SUPPORT!

mangrove wrote:
Verdict: OS6 is completely unusable with small writes to an iSCSI target on a RAID5 volume, probably due to CoW not really being disabled. I wonder if this extends to small CIFS writes as well -- or database performance.

There is definitely something strange going on with BTRFS, although I can't nail it down. For example - I have one computer that has Arconis Backup and Recovery installed on it. A typical backup routine will write one large monolithic file to the NAS that is approximately 60GB in size. This 60 GB file takes about 30 to 40 minutes to write up the NAS, which is what I would consider good or normal performance. The weird part is the backup verification process. I wound up having to disable that feature for the daily incremental backups and only enable it for the full backups that it does once every month or so. Get this. . . the verify process if left unattended would take three to four DAYS to complete (at a speed of less than 4 Mbits per second). The only way that I am able to make the verify process progress at an acceptable speed is to pause the verify task, disable Jumbo Frames and AntiVirus software on the PC, reboot the NAS, wait 5 minutes and resume the verify. Unfortunately I don't have a clue as to what exactly Arcronis is doing during the backup verification process, but one would assume it would primarily be a read and compare operation. It just boggles my mind that during the course of this process the upstream speeds are between 60 and 80 Mbps and the downstream speed is only 3 or 4 Mbps.

Anyone care to make sense of this phenomenon?