[Xen-users] how to debug slow HDD performance in Windows 2003 domU ?

[Rudi Ahlers <Rudi@xxxxxxxxxxx>]

Hi

I've recently setup CentOS 5.1 x64, with a Windows 2003 Web x64 domU and 
assigned 1 CPU & 1GB RAM to it.
Today, which installing something in Windows, I notice that it takes 
ages to install a program. Running xm top, it doesn't seem like it's 
running out of RAM or CPU, and checking Windows Task Manager, I can see 
it consumes only 2 - 6% CPU, and 127MB RAM in total. So, I believe it's 
probably an IO problem then?

xentop - 14:07:05   Xen 3.1.0-53.1.21.el5
4 domains: 1 running, 3 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 8387960k total, 4979120k used, 3408840k free    CPUs: 4 @ 2133MHz
     NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) 
MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS   VBD_OO   VBD_RD   VBD_WR SSID
cPanel001 --b---       7673    0.6    1048444   12.5    1048576      
12.5     2    1    30798   700440    1        0   196241   935986    0
cPanel002 --b---        221    0.1    1048420   12.5    1048576      
12.5     2    1       67     2408    1        0    20380    23765    0
 Domain-0 -----r       2111    0.6    2208840   26.3   no limit       
n/a     4    4  1606255  7887454    0        0        0        0    0
windows2003_web --b---        317    2.0     532352    6.3    
1064960      12.7     1    1        0        0    2        0        
0        0    0

The server is a Dell PowerEdge 860, with a Dual Core 2.4Ghz Xeon CPU, 
8GB DDRII-667 RAM, and 750GB SATAII HDD.
Installing something in a CentOS domU was very quick, so I also presume 
it's something Windows specific, but this is my first Windows domU 
attempt, so I don't know what to look for.
What do I do?

--

Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
Check out my technical blog, http://blog.softdux.com for Linux or other 
technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stuff


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