On 2/1/06, Ben Greear <[email protected]> wrote:
> Ashutosh Naik wrote:
> > Now, I assume that on Gigabit ethernet, I should be getting Line Rate,
> > which is around 220 MBps. Even the CPU is not getting max-ed out here
> > and I am at a loss to understand this behaviour.
>
> Make sure you are running 64-bit 100+Mhz PCI, otherwise you will not
> get line speed. ethtool -d [device]
> may get that info for you.
Thanks for that Ben. I now used a 64 bit,133 MHz PCI-X on both
machines and I got around 180 MBps, (86259.48 + 95164.90 ), which is
still a decent way away from Line speed. I think PCI is not a
bottleneck now, although I could be wrong. What could I be missing,
and has anybody seen line speed ( 220 MBps ) with e1000 ?
Regards and Thanks
Ashutosh
ps - Attaching my ettcp log
[root@localhost ~]# ettcp -s -t -i 300ttcp-r: accept from 192.168.90.100
User: 17553 Nice: 0 System 8885 Idle:737051 Params:4
ttcp-t: buflen=65536, nbuf=2048, align=16384/0, port=5001 tcp -> 192.168.90.10
0
nttcp-t: socket
nttcp-t: connect
User: 17555 Nice: 0 System 8892 Idle:737076 Params:4
^[
User: 19818 Nice: 0 System 14716 Idle:747604 Params:4
User_diff: 2265 Nice_diff: 0 System_diff: 5831 Idle_diff:10553 Tot:18649
User: 12.145423 System: 31.267092 Nice 0.000000 Idle:56.587485
nttcp-r: Buflen:65536 SysLoad:31.27% 29232070656 bytes 299.97secs =95164.90 KB/s
ec
nttcp-r: 699884 I/O calls, msec/call = 0.44, calls/sec = 2333.15
nttcp-r: 0.2user 32.6sys 4:59real 10% 0i+0d 0maxrss 0+30pf 691228+3947csw
User: 19834 Nice: 0 System 14722 Idle:747623 Params:4
User_diff: 2279 Nice_diff: 0 System_diff: 5830 Idle_diff:10547 Tot:18656
User: 12.215909 System: 31.250000 Nice 0.000000 Idle:56.534091
nttcp-t: Buflen:65536 SysLoad:31.25% 26499153920 bytes 300.00secs =86259.48 KB/s
ec
nttcp-t: 404345 I/O calls, msec/call = 0.76, calls/sec = 1347.80
nttcp-t: 0.2user 44.9sys 5:00real 15% 0i+0d 0maxrss 0+30pf 374765+1306csw
[1]+ Done ettcp -s -r -l 65536
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