On Mon, Nov 27, 2000 at 02:12:57PM +0200, Pekka Pietikainen wrote:
> On Mon, Nov 27, 2000 at 12:31:08PM +0200, Pekka Pietikainen wrote:
> > Hi
> >
> > A co-worker is having performance problems when doing Linux to Solaris
> > transfers on WAN's.
> >
> Seems to be fixed by patches in Alexey's zerocopy diff
> (Tested only on a box with 10baseT though, I'll try to backport the changes
> to 2.2 and test this on the boxes he had problems with, the pipe
> certainly can handle quite a bit more than 10Mbps even though it's
> transatlantic ;) )
The problem is also fixed with 2.4.0-test12pre3 (this time running on the same
machine he had problems with):
[ 3] local 137.138.225.101 port 32769 connected with 131.243.2.109 port
6003
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 5.0 sec 10.6 MBytes 16.9 Mbits/sec
[ 3] 5.0-10.9 sec 21.7 MBytes 29.8 Mbits/sec
[ 3] 10.9-15.0 sec 11.2 MBytes 21.4 Mbits/sec
[ 3] 15.0-20.1 sec 14.4 MBytes 23.0 Mbits/sec
[ 3] 20.1-25.0 sec 14.8 MBytes 23.7 Mbits/sec
[ 3] 25.0-30.1 sec 14.8 MBytes 23.2 Mbits/sec
[ 3] 30.1-35.1 sec 7.8 MBytes 12.6 Mbits/sec
[ 3] 35.1-40.8 sec 3.8 MBytes 5.3 Mbits/sec
[ 3] 40.8-45.3 sec 2.6 MBytes 4.5 Mbits/sec
[ 3] 45.3-50.6 sec 3.7 MBytes 5.5 Mbits/sec
[ 3] 50.6-55.3 sec 3.7 MBytes 6.3 Mbits/sec
[ 3] 55.3-60.5 sec 4.8 MBytes 7.3 Mbits/sec
[ 3] 0.0-61.7 sec 114 MBytes 14.8 Mbits/sec
A fix for 2.2 would be nice, though. I did some modifications to 2.2 based
on the 2.4 changes, but only managed to get a very small improvement (and
after even further changes a mostly non-functioning TCP ;) )
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