Performance bottleneck with 2.2.1 and 2008 R2 os VM's

Hi,
I have DL370 g6 with Oracle vm server 2.2.1 installed
*72 GB of Memory and 2 dual + quad core processor*
All VM's are installed on local disk ( 6 300 GB in Raid 5 )*
I have 2 nic connected to siwtch for lan traffic
We have 10 VM's with 2008 R2 OS on it.
The overall performance of these VM's is really horrible.
They are very very very slow
To install Databse on it takes 4 hours even though RAM is 6 GB for each VM
To restar the system it takes around 20 minutes .
Has anybody tried thiese many VM's on 1 server.
Is there any tool or any way i can see what is the issue or is there any bottlneck on the server .
2008 R2 is generally a resource hungry OS but still the overall performance is really horrible

hi,
hdparm -T /dev/cciss/c0d0 which is the drive gives
/dev/cciss/c0d0
Timing cached reads: 31088 MB in 1.99 seconds = 15595.54 MB/sec
HDIO_Drive_CMD(null) (wait for flush complete ) failed : Inappropriate ioctl for device
HDIO_Drive_CMD(null) (wait for flush complete ) failed : Inappropriate ioctl for device
hdparm -T /dev/cciss/c0d0p5 whichi is /OVS - it gives
/dev/cciss/c0d0p5
Timing cached reads: 30636 MB in 1.99 seconds = 15364.10 MB/sec
HDIO_Drive_CMD(null) (wait for flush complete ) failed : Inappropriate ioctl for device
HDIO_Drive_CMD(null) (wait for flush complete ) failed : Inappropriate ioctl for device
My all VM guests are windows 2008 R2 64 bit OS which is very new OS of windows.Oracle came up with New PV drivers for it and I suspect can that be a reason for all this resource bottleneck ???????????
For I/O test use :On the VM server
1) iostat
avg-cpu: %user %nice %system %iowait %steal %idle
0.11 0.00 0.03 0.24 0.00 99.61
Device tps BLK_read/s Blk_wrtn/s
ciss/c0d0 - disk 41.90 186.32 26.05
cciss/c0d0p1-/boot 0.00 0.00 0.00
cciss/c0d0p2 - 0.00 0.00 0.00
cciss/c0d0p3- / 1.90 1.83 43.06
cciss/c0d0p4 0.00 0.00 0.00
cciss/c0d0p5 - /OVS 40.00 184.49 295.82
2) vmstat
swpd free buff cache
92 166632 94940 53444
3) sar
To display block I/O activity:
sar -b 3 100
Average : tps - 41.18 rtps - 7.17 wtps - 34.01 bread/s 188.99 bwrtn/s - 588.64
To display block I/O activity for each block device:
sar -d 3 100
Does this look ok .Is there any way to improve overall performance.Like enabling or disabling something .We are facing a very bad problem here with all the VM with 2008 R2 OS on it

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>
Matthias Weisensel wrote:
> We have big Performance Problems with following Statement:
>
>
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>
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>
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          http://www.amazon.com/exec/obidos/ASIN/1904284000/qid%3D1051548860/sr%3D11-1
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