1c1
< $ sudo ip link set mtu 1500 dev eth0
---
> $ sudo ip link set mtu 6128 dev eth0
7,10c7,10
< nuttcp-t: connect to $SMALLER_HOST with mss=1448, RTT=0.434 ms
< nuttcp-t: send window size = 87040, receive window size = 372480
< nuttcp-t: available send window = 43520, available receive window = 186240
< nuttcp-t: 784.1312 MB in 10.00 real seconds = 80294.00 KB/sec = 657.7685 Mbps
---
> nuttcp-t: connect to $SMALLER_HOST with mss=6076, RTT=0.412 ms
> nuttcp-t: send window size = 168960, receive window size = 222592
> nuttcp-t: available send window = 84480, available receive window = 111296
> nuttcp-t: 539.0589 MB in 10.00 real seconds = 55199.38 KB/sec = 452.1933 Mbps
12,13c12,13
< nuttcp-t: 12547 I/O calls, msec/call = 0.82, calls/sec = 1254.68
< nuttcp-t: 0.0user 1.4sys 0:10real 15% 0i+0d 1010maxrss 0+0pf 14248+35csw
---
> nuttcp-t: 8625 I/O calls, msec/call = 1.19, calls/sec = 862.50
> nuttcp-t: 0.0user 0.5sys 0:10real 5% 0i+0d 992maxrss 0+0pf 6039+7csw
17,23c17,22
< nuttcp-r: accept from $SMALLER_HOST
< nuttcp-r: send window size = 87040, receive window size = 374400
< nuttcp-r: available send window = 43520, available receive window = 187200
< nuttcp-r: 784.1312 MB in 10.00 real seconds = 80270.75 KB/sec = 657.5780 Mbps
< nuttcp-r: 154196 I/O calls, msec/call = 0.07, calls/sec = 15414.94
< nuttcp-r: 0.0user 2.0sys 0:10real 20% 0i+0d 690maxrss 0+15pf 141630+314csw
< 
---
> nuttcp-r: accept from $SMALLER_HOST 
> nuttcp-r: send window size = 168960, receive window size = 222976
> nuttcp-r: available send window = 84480, available receive window = 111488
> nuttcp-r: 539.0589 MB in 10.04 real seconds = 54969.76 KB/sec = 450.3122 Mbps
> nuttcp-r: 47036 I/O calls, msec/call = 0.22, calls/sec = 4684.01
> nuttcp-r: 0.0user 0.9sys 0:10real 10% 0i+0d 690maxrss 0+15pf 38414+166csw