Re: NetBSD network speed under VMware ESXi

[Martti Kuparinen <martti.kuparinen%iki.fi@localhost>]

Virtual machine (on VMware ESXi)
--------------------------------
# uname -srm
NetBSD 4.99.73 amd64

# ifconfig wm0
wm0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500

capabilities=2bf80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Tx,UDP6CSUM_Tx>
        enabled=0
        address: 00:0c:29:ef:64:67
        media: Ethernet autoselect (1000baseT full-duplex,master)
        status: active


Real machine (on Dell PowerEdge 2900)
-------------------------------------
# uname -srm
NetBSD 4.0_STABLE amd64

# ifconfig bnx0
bnx0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500

capabilities=3f00<IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx>

enabled=3f00<IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx>
        address: 00:18:8b:38:b7:3a
        media: Ethernet autoselect (100baseTX full-duplex)
        status: active


Scenario 1: TCP between two virtual machines
--------------------------------------------
ttcp-t: 232183808 bytes in 1.23 real seconds = 1444.00 Mbit/sec +++
ttcp-t: 232183808 bytes in 0.91 CPU seconds = 1950.54 Mbit/cpu sec
ttcp-t: 28343 I/O calls, msec/call = 0.04, calls/sec = 23104.17


Scenario 2: UDP between two virtual machines
--------------------------------------------
ttcp-t: 232183808 bytes in 1.31 real seconds = 1351.73 Mbit/sec +++
ttcp-t: 232183808 bytes in 1.03 CPU seconds = 1726.16 Mbit/cpu sec
ttcp-t: 28347 I/O calls, msec/call = 0.05, calls/sec = 21630.87


Scenario 3: TCP between virtual machine and real machine
--------------------------------------------------------
ttcp-r: 232183808 bytes in 19.89 real seconds = 89.08 Mbit/sec +++
ttcp-r: 232183808 bytes in 1.03 CPU seconds = 1722.91 Mbit/cpu sec
ttcp-r: 159331 I/O calls, msec/call = 0.13, calls/sec = 8012.17


Scenario 4: UDP between virtual machine and real machine
--------------------------------------------------------
ttcp-t: 232183808 bytes in 1.75 real seconds = 1012.72 Mbit/sec +++
ttcp-t: 232183808 bytes in 1.71 CPU seconds = 1037.14 Mbit/cpu sec
ttcp-t: 28347 I/O calls, msec/call = 0.06, calls/sec = 16206.01