Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Christian Balzer schrieb: > > If your local I/O subsystem pulls 120MB/s, the expected max DRBD > > throughput is around 105 MB/s: > > > > - disk does 120, > > - Gigabit Ethernet realistically does 110, > Yeah, various network tests get near that value. > > > - so the network is your bottleneck, > It's a bonded dual GigE. Initially done to give DRBD enough breathing room > and left in place to have more redundancy for it and heartbeat. Are the servers directly connected or are you using switch to connect? I tried the round-robin bonding mode with cisco switches, but cisco doesn't support rr mode. At least when I tested it. So in the end the connection between my 2 server was still limited by a single GbE link. In a test with 2 x GbE crossover connections, I was able to achive ~170 MB/s with the netpipe benchmark. I didn't test this with drbd, but other daemons (smbd, vsftp) didn't show a huge impovement from his raw speed gain. The limit was always ~80 MB/s. Ralf