I have recently upgraded mij 3.0.2 server to 3.5 Update 3 with the latest patches.
One of my VM's has 9 disks of 1 TB each on different LUN's
After the upgrade it takes about 30 mintues to doe a commit after creating a snapshot. Even when i commit straight after making a snapshot. (this was not the case in the older ESX build)
In the vmkernel log i see a couple of strange new errors :

Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.265 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:0 (handle 10448)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.266 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:1 (handle 10449)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.266 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:2 (handle 10450)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.266 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:3 (handle 10451)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.312 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:8 (handle 10452)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.367 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:9 (handle 10453)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.419 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:10 (handle 10454)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.454 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:11 (handle 10455)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.532 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:12 (handle 10456)
Jan 14 07:16:11 shr-ipbv-esx021 vmkernel: 1:19:02:49.584 cpu3:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:13 (handle 10457)
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.288 cpu2:1095)DevFS: 2222: Unable to find device: 6c27e-shr-ipvl-mat001-000009-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.303 cpu2:1095)DevFS: 2222: Unable to find device: 15281-shr-ipvl-mat001-000008-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.321 cpu2:1095)DevFS: 2222: Unable to find device: 8284-shr-ipvl-mat001-000007-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.332 cpu2:1095)DevFS: 2222: Unable to find device: 1beb287-shr-ipvl-mat001-000006-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.347 cpu2:1095)DevFS: 2222: Unable to find device: c28a-shr-ipvl-mat001-000005-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.369 cpu2:1095)DevFS: 2222: Unable to find device: 1328d-shr-ipvl-mat001-000004-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.383 cpu2:1095)DevFS: 2222: Unable to find device: 9290-shr-ipvl-mat001-000003-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.386 cpu2:1095)DevFS: 2222: Unable to find device: 6b293-shr-ipvl-mat001-000002-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.397 cpu2:1095)DevFS: 2222: Unable to find device: 3296-shr-ipvl-mat001_1-000001-delta.vmdk
Jan 14 07:17:10 shr-ipbv-esx021 vmkernel: 1:19:03:48.426 cpu2:1095)DevFS: 2222: Unable to find device: 3299-shr-ipvl-mat001-000001-delta.vmdk
Jan 14 07:17:11 shr-ipbv-esx021 vmkernel: 1:19:03:49.653 cpu3:1102)StorageMonitor: 196: vmhba1:0:111:0 status = 24/0 0x0 0x0 0x0
Jan 14 07:17:12 shr-ipbv-esx021 vmkernel: 1:19:03:50.167 cpu3:1095)StorageMonitor: 196: vmhba1:0:7:0 status = 24/0 0x0 0x0 0x0
Jan 14 07:17:21 shr-ipbv-esx021 vmkernel: 1:19:03:59.583 cpu1:1095)VSCSI: 4060: Creating Virtual Device for world 1096 vscsi0:0 (handle 10458)

These errors keep repeating for about 30 minutes..and then suddenly the job is done.
Does anyone know why this could be taking so long?

The Commit kept crashing after the upgrade, but after changing the COQ.MaxHeapSize.MB from 32 to 64, the commit strated to work. It just takes very long and the VM stops responding during the commit.

Thanks,
Omar