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ntvdm.exe and 75% load CPU
Posted: 11. Dec 2009, 00:18
by dbehterev
Hello all!
I have installed Ubuntu 9.10 Carmic on AMD64 platform. My configuration: CPU AMD Phenom 2 X3, 4Gb RAM, 750Gb HDD. Also I use Windows XP Professional SP3 OS as guest OS. Last MS service packs installed. I use VirtualBox 3.1.0 r55467. For guest machine I gave 128Mb RAM for video and 1Gb RAM and 1 CPU. Problem is that when I run old 16-bit applications in guest OS ntvdm.exe process heavily load CPU (75% and above). Usually it's normal in real environment, but in guest OS it's scary, I see full degradation performance guest system. But sometimes, 16-bit run quickly (also as in real environment). I don't understand my problem, I need help.
Re: ntvdm.exe and 75% load CPU
Posted: 12. Dec 2009, 00:16
by vbox4me2
Guest VM settings?
Re: ntvdm.exe and 75% load CPU
Posted: 12. Dec 2009, 02:12
by dbehterev
vbox4me2 wrote:Guest VM settings?
What settings do you need know?
Re: ntvdm.exe and 75% load CPU
Posted: 12. Dec 2009, 13:44
by vbox4me2
Run: [VBoxManage showvminfo "VMNAME"], and post results here.
Re: ntvdm.exe and 75% load CPU
Posted: 12. Dec 2009, 22:57
by dbehterev
vbox4me2 wrote:Run: [VBoxManage showvminfo "VMNAME"], and post results here.
Code: Select all
VirtualBox Command Line Management Interface Version 3.1.0
(C) 2005-2009 Sun Microsystems, Inc.
All rights reserved.
Name: xp
Guest OS: Windows XP
UUID: 2bc0f4ac-f441-4dac-befa-382299a17596
Config file: /root/.VirtualBox/Machines/xp/xp.xml
Hardware UUID: 2bc0f4ac-f441-4dac-befa-382299a17596
Memory size: 1024MB
VRAM size: 128MB
Number of CPUs: 1
Synthetic Cpu: off
CPUID overrides: None
Boot menu mode: message and menu
Boot Device (1): HardDisk
Boot Device (2): Floppy
Boot Device (3): DVD
Boot Device (4): Not Assigned
ACPI: on
IOAPIC: on
PAE: on
Time offset: 0 ms
Hardw. virt.ext: on
Hardw. virt.ext exclusive: on
Nested Paging: on
VT-x VPID: off
State: powered off (since 2009-12-12T20:54:00.179000000)
Monitor count: 1
3D Acceleration: on
2D Video Acceleration: on
Teleporter Enabled: off
Teleporter Port: 0
Teleporter Address:
Teleporter Password:
Storage Controller Name (0): IDE Controller
Storage Controller Type (0): PIIX4
Storage Controller Instance Number (0): 0
Storage Controller Max Port Count (0): 2
Storage Controller Port Count (0): 2
Storage Controller Name (1): Floppy Controller
Storage Controller Type (1): I82078
Storage Controller Instance Number (1): 0
Storage Controller Max Port Count (1): 1
Storage Controller Port Count (1): 1
IDE Controller (0, 0): /var/vmimages/virtualbox/xppro/xppro.vdi (UUID: 9495eb5f-1288-4800-a98c-fd3167287c63)
IDE Controller (0, 1): /var/vmimages/virtualbox/xppro/30Gb.vdi (UUID: a2c0400d-bf66-4619-a3d6-27bb18c5c7ed)
IDE Controller (1, 0): /usr/share/virtualbox/VBoxGuestAdditions.iso (UUID: 3439f92f-b2b6-45ac-a6a1-602d5c40c172)
Floppy Controller (0, 0): Empty
NIC 1: MAC: 0800278F6B74, Attachment: Bridged Interface 'eth0', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps
NIC 2: disabled
NIC 3: disabled
NIC 4: disabled
NIC 5: disabled
NIC 6: disabled
NIC 7: disabled
NIC 8: disabled
UART 1: disabled
UART 2: disabled
Audio: enabled (Driver: PulseAudio, Controller: AC97)
Clipboard Mode: Bidirectional
VRDP: disabled
USB: enabled
USB Device Filters:
Index: 0
Active: yes
Name: Panasonic KX-MB263RU [0100]
VendorId: 04da
ProductId: 1503
Revision: 0100
Manufacturer: Panasonic
Product: KX-MB263RU
Remote: no
Serial Number: 28AR05007342
Index: 1
Active: yes
Name: WebCAM USB2.0 [0102]
VendorId: 0458
ProductId: 702a
Revision: 0102
Manufacturer:
Product: WebCAM USB2.0
Remote: no
Serial Number:
Index: 2
Active: yes
Name: Aladdin Knowledge Systems Ltd. Token 4.28.1.0 2.7.195 [0100]
VendorId: 0529
ProductId: 0600
Revision: 0100
Manufacturer: Aladdin Knowledge Systems Ltd.
Product: Token 4.28.1.0 2.7.195
Remote: no
Serial Number:
Index: 3
Active: yes
Name: Y-E DATA USB Floppy Drive [0601]
VendorId: 057b
ProductId: 0000
Revision: 0601
Manufacturer: Y-E DATA
Product: USB Floppy Drive
Remote: no
Serial Number:
Index: 4
Active: yes
Name: Prolific Technology Inc. ATAPI-6 Bridge Controller
VendorId: 067b
ProductId: 2507
Revision: 0000
Manufacturer: Prolific Technology Inc.
Product: ATAPI-6 Bridge Controller
Remote: no
Serial Number: D6251008F
Index: 5
Active: yes
Name: Zebra ; TLP2844 [0001]
VendorId: 0a5f
ProductId: 000a
Revision: 0001
Manufacturer: Zebra ;
Product: TLP2844
Remote: no
Serial Number: 41A081901676
Index: 6
Active: yes
Name: Y-E DATA USB Floppy Drive [0601]
VendorId: 057b
ProductId: 0000
Revision: 0601
Manufacturer: Y-E DATA
Product: USB Floppy Drive
Remote: no
Serial Number:
Index: 7
Active: yes
Name: Prolific Technology Inc. Mass Storage Device [0100]
VendorId: 067b
ProductId: 3507
Revision: 0100
Manufacturer: Prolific Technology Inc.
Product: Mass Storage Device
Remote: no
Serial Number: 0
Shared folders:
Name: 'incoming', Host path: '/var/incoming' (machine mapping), writable
Guest:
Statistics update: disabled
Re: ntvdm.exe and 75% load CPU
Posted: 13. Dec 2009, 00:38
by vbox4me2
It might be typical for a 16bit app. to run high utilization depending what the app. does, if for instance it uses interrupts alot its normal what you see in a VM, a real machine handles such things differently. Consider using dos-idle or tame-res for this app.