romka@linux

ksmd cpu consumption

romka — Mon, 19 Jul 2010 08:29:47 +0000

ksmd seem to be CPU hungry when virtual machine is running.

+KSM is a memory-saving de-duplication feature, enabled by CONFIG_KSM=y,
+added to the Linux kernel in 2.6.32. See mm/ksm.c for its implementation,
+and http://lwn.net/Articles/306704/ and http://lwn.net/Articles/330589/

I’ve disabled it for now, we’ll see how everything runs afterwords…

useful tar command with find files and recursive folders

romka — Thu, 27 May 2010 13:01:25 +0000

find dir -name ‘wildcard_search‘ | tar -cvjf filename.tar.bz2 -T – –no-recursion

Upgrade to 10.04 LTS

romka — Wed, 05 May 2010 07:42:49 +0000

1. Did full backup of my root partition and dot files in a home folder.
2. Deleted all dot files from home folder.
3. Installed 10.04 from CD “clean”
4. Installed all my software (I have a file with apt-get command installing all I need unattended – start in the evening, PC ready in the morning)
5. Everything seems to work so far

Qemu usb

romka — Wed, 21 Apr 2010 11:49:45 +0000

Solution by TJ from launchpad bugs:

Create a new group “vm” and add users that require USB access for VMs to it:

sudo addgroup vm
sudo addgroup $USER vm

Log-out/log-in to effect the new group membership.

Add a udev rule to assign USB devices to the vm group:

# Virtual Machine hypervisor access to USB devices
SUBSYSTEM==”usb”, ENV{DEVTYPE}==”usb_device”, GROUP=”vm”
SUBSYSTEM==”usb_device”, GROUP=”vm”

Save the file as /etc/udev/rules.d/41-vm-usb.rules and reload udevd:

sudo /etc/init.d/udev restart

virtualization, qemu and mouse

romka — Mon, 19 Apr 2010 07:32:19 +0000

I’ve got fed up with VMWare issues and testing KVM/QEMU which seem to be a bit more proper way of running virtual machines under linux. I enjoy the possibility of running it from command line and using VNC connection to the Virtual PC. some tricks are still needed:

1) had to disable “Enhance pointer precision” in Pointer Options in XP guest to align cursors…

virtualization

romka — Thu, 15 Apr 2010 16:48:18 +0000

VMWare and kvm is not going to leave in peace ) If kvm modules are loaded – vmware virtual machine is not going to start… To start it:
sudo modprobe -r kvm*

Some good tips on setting up ssh right:

romka — Mon, 22 Feb 2010 10:21:06 +0000

Here

ncp mount to novell shares

romka — Tue, 09 Feb 2010 08:41:48 +0000

I’ve managed to get connected to my corporate Novell shares. Solution is ncpmount (we don’t use ipx so I didn’t install it) + thanks to this post:

ncpmount -S server_name -A server_ip -U novell_login /mnt/novell/

novell_login matches my linux box login, otherwise -u linux_login is said to be needed.

Works a charm )

I’ve also made /mnt/novell/ to be owned by my linux_login, so I don’t need to sudo

tesseract

romka — Sun, 24 Jan 2010 18:21:09 +0000

Installed tesseract as an OSR engine.

It might require convert in_file -compression NONE -rotate _angle_ out_file.tif to convert graphical file to tif and properly rotate it

Afterwards tesseract file.tif file to generate file.txt with recognized image

Settlers of Catan

romka — Mon, 11 Jan 2010 19:02:11 +0000

There is a free version for Linux called pioneers. To add 3 computer players need to open new terminal and type:
pioneersai -n comp1 -s 127.0.0.1 & pioneersai -n comp2 -s 127.0.0.1 & pioneersai -n comp3 -s 127.0.0.1 &

found at http://ubuntuforums.org/showthread.php?t=1359342