Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, 28 Mar 2007, Duane Cox wrote: > Hello list: > > Could someone please assist in finding my performance bottleneck... (~90 > MB/sec raw write to ~20 MB/sec connected drbd) > Of course, I expected to see better write performance than what I obtained. > > I have read a few archived posts by Lars, and followed his steps at: > http://lists.linbit.com/pipermail/drbd-user/2006-August/005495.html > http://www.gossamer-threads.com/lists/drbd/users/10689#10689 > > Both servers are Dell 2650 with identical hardware connected via 1G > ethernet. > drbd resource is a single (meaning one per server) SCSI 36G 15K U320 > (ST336754LC) drive What kind of NIC? My recollection is that the 2650 has the TigonIII (Broadcom) NIC. Personally, I've more trouble with them than you can throw a stick at. If you can get 'em, use the Intel or (slightly less preferable) the RTL8169. I've had other, less pleasant experiences with other chipsets in gig-e at high load. Are you REALLY REALLY sure that it's not network problems? Have you tried something really simple like a basic TCP benchmark between the two machines? -- Jon Nelson <jnelson-drbd at jamponi.net>