Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Lars Knudsen said: >> >and then to benchmark: >> > ./dm -x -a 0 -s 4g -b 20m -m -y -p -o /maurice/bonnie/hello > > Im seeing the following results for partitions outside/inside drbd: > outside: 204.67 MB/sec (4294967296 B / 00:20.012843) > inside: 21.40 MB/sec (4294967296 B / 03:11.389558) > > Servers are Dell PowerEdge 2950, 8g mem, 6*SATA on megaraid_sas > controller. Here are my results. Core 2 Duo 6600 4GB RAM ubuntu 6.06 on 2 x 80GB SW RAID1 drbd 0.7.15 Areca 1260 PCI-e RAID5 7x750GB (1GB Cache) 4,5TB split up in three 1,5TB Volumes sdc1/sdd1/sde1 (RAID feature) 3 drbd resources -> one lvm vg 2 directly connected e1000 GbE cards # /dev/sdc1 (1,5TB) with xfs no drbd ./dm -x -a 0 -s 4g -b 20m -m -y -p -o /mnt/bonnie/dm RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRr 239.44 MB/sec (4294967296 B / 00:17.106477) # 4,5TB xfs FS, drbd disconnected ./dm -x -a 0 -s 4g -b 20m -m -y -p -o /mnt/bonnie/dm RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRr 214.32 MB/sec (4294967296 B / 00:19.111477) # 4,5TB xfs FS, drbd connected and in sync ./dm -x -a 0 -s 4g -b 20m -m -y -p -o /mnt/bonnie/dm RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRr 98.08 MB/sec (4294967296 B / 00:41.761632) The bonnie++ and tiobench benchmarks are in the same area. In my case, drbd is mainly limited by the speed of the GbE link. Ralf