Re: Sun Client Maximum Throughputs (again)

Does somebody have an experience with how many PACKETS can be sent over specific Ether/Quad/Giga etc. interfaces ?

Eyal.

Brian Tao wrote:

On Tue, 29 Jun 1999, Brian Pawlowski wrote:

...

I thought I could use a 2 x 400MHz Ultra Enterprise E250 with a new Sun GbE card in it as a killer client, and I find that with V3 32KB UDP packets, the sucker rolls over at

  ~30 MB/s

with 2 CPUs pinned at 99% in system time.

This *sucks*.

I didn't see any satisfactory answers to this the last time

around, but I'm doing a bit of benchmarking for a killer tape backup server (streaming ~60MB/sec to tape). I have an older Sun E450 with 2 x 250-MHz CPU's and a Quad Fast Ethernet NIC in one of the PCI slots.

qfe0 is directly attached to an idle F740, and likewise for qfe1

to another idle F740. Please tell me I should be able to see more than an aggregate 10 MB/s doing dumps over rsh with that setup? I'm shuffling the dump streams off to /dev/null so local disk speed is not an issue. On another system, a 2 x 300-MHz E450 with two single-port NIC's, I'm able to pull about 15 MB/s total. Does the Sun QFE just suck, and I should stick to individual single-port NIC's?

I want to lead up to a 4 x 450-MHz E420R with Gigabit Ethernet,

and hope I can achieve 50 MB/s or more from eight F740's. Has anyone tried this configuration? -- Brian Tao (BT300, taob@risc.org) "Though this be madness, yet there is method in't"