Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Sorry if already asked, but are you using hardware raid or software raid? If so, is it raid 5/6 ? I discovered an huge hole in performance like your reports using that kind of setup. Search in the list for previous posts about performance solved. Regards, -- #Matteo Tescione #RMnet srl Il 20-12-2007 1:41, "Art Age Software" <artagesw at gmail.com> ha scritto: > I have run some additional tests: > > 1) Disabled bonding on the network interfaces (both nodes). No > significant change. > > 2) Changed the DRBD communication interface. Was using a direct > crossover connection between the on-board NICs of the servers. I > switched to Intel Gigabit NIC cards in both machines, connecting > through a Gigabit switch. No significant change. > > 3) Ran a file copy from node1 to node2 via scp. Even with the > additional overhead of scp, I get a solid 65 MB/sec. throughput. > > So, at this stage I have seemingly ruled out: > > 1) Slow IO subsystem (both machines measured and check out fine). > > 2) Bonding driver (additional latency) > > 3) On-board NICs (hardware/firmware problem) > > 4) Network copy speed. > > What's left? I'm stumped as to why DRBD can only do about 3.5 BM/sec. > on this very fast hardware. > > Sam > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user >