Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi all, I have yet another DRBD performance question, I know there are tons of them out there and tons of answers+tutorials as well. Thus, I'll keep it really simple and leave out most the technical/configuration detail: Scenario: I have a direct 2-gigabit-ethernet link (balance-rr bonded Intel NICs) between the DRBD nodes, achieving 1.97GBits measured with iperf and MTU set to 9200 (which is the max MTU for this NIC). The backing device RAID is capable of 300MB+/s throughput. Question: Has anyone ever achieved DRBD (8.3.10) write throughput rates above ~ 165MB/s using a similar 2-gbit-ethernet bonding setup? I have found the following post by Lars Ellenberg: http://lists.linbit.com/pipermail/drbd-user/2008-July/009893.html He writes about 163 MB/s write speed on the same setup. I have probably done all the tweaking the official guides suggest on the ressource config. I have also played around with some TCP tweaking... switched to protocol A, and so on... But no further increase. I measured the DRBD/RAID performance using IOMeter 32kb seq. writes with 1 thread. So is ~165MB/s the maximum for DRBD writes on 2-gbit-ethernet? Thanks for all your help! -- Dipl.-Ing. Joschi Brauchle, M.Sc. Institute for Communications Engineering (LNT) Technische Universitaet Muenchen (TUM) 80290 Munich, Germany Tel (work): +49 89 289-23474 Fax (work): +49 89 289-23490 E-mail: joschi.brauchle at tum.de Web: http://www.lnt.ei.tum.de/