iSCSI filesystem (direct and VM zone) benchmark using bonnie++ 
Configuration:

initiator:  Linux 2.6 CentOS5.2 (Intel Xeon @3000, 2x Quadcore, 4GB)
target: Solaris 10u5 target (AMD Dualcore @2300, 1x dualcore, 4GB)
connection: connected using 1Gbit dedicated TP cable
method: bonnie++ -u root -d /dir/
TCP stack: default


The initiator:

root (VM server1):# ethtool eth1
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: g
Link detected: yes


Target:

(iSCSI target1):# dladm show-dev
nge0 link: up speed: 100 Mbps duplex: full
nge1 link: unknown speed: 0 Mbps duplex: unknown
e1000g0 link: up speed: 1000 Mbps duplex: full
e1000g1 link: up speed: 1000 Mbps duplex: full



Setup 1:

Direct test: Linux initiator connects target iSCSI, used with ext3.

	------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
8G 64534 79 37878 9 16037 3 26290 40 24539 1 225.6 0


Setup 2:

VmWare Server zone test: VmWare zone is accessing its filesystem which is a regular file ontop of host machine iSCSI/ext3 partition.

	------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
5G 12911 17 18164 3 12984 3 19130 33 21674 3 346.3 3


Conclusion: the VM zone disk access speed is too slow when the VM disk is a regular file ontop of VmWare server's iSCSI/ext3 filesystem. The io of the 64bit XP Windows zone seems to be yet worse than 64bit CentOS VM.

Setup 3:

VmWare ESXi zone directly accessing iSCSI.

	------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
5G 38094 47 33518 6 16307 4 32691 52 40159 4 276.3 1


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