The main component of most operating systems, the kernel manages most of a computer's communication between hardware and software. Typically, the kernel is the lowest level of abstraction a programmer can have to a resource.

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Why are user level threads faster than kernel level threads?

I found out that user level threads are a lot faster than kernel level threads but I could not find any convincing example of WHY is user level threads are faster than kernel level threads ? Could ...
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2answers
91 views

Will applications running in root mode be able to overwrite OS's or other program's memory section?

I read here that any application running in root mode can issue a kernel call and execute in kernel mode. Is is possible that ANY application running in root mode can make a kernel call, go to kernel ...
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3answers
68 views

How do I get the latest linux kernel, and why would I want to do that in the first place?

I'm running 3.10-3-686-pae, and I think I would like to upgrade to 3.12 just so I can learn more about how it all works. My computer runs pretty well considering how old it is. I have been learning to ...
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7answers
13k views

Any reason not to disable Windows kernel paging?

So I'm planning on eventually going to 2 GB (mobo max) RAM from 1 GB, and I want to disable kernel paging once I do, because I've heard it can give a performance boost (and that I believe). Any reason ...
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2answers
120 views

Can linux kernel be installed alone without any other existing OS

Hi I am newbie to linux world. I have just downloaded the latest kernel from kernel.org. I want to install this simple kernel into my PC(my PC is formatted and has empty hdd). Can I do that? if so, ...
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1answer
84 views

Why is my Mac contacting Romania?

I just used Onyx to clean out my caches and log files after which I did a reboot. Browsing the "All Messages" panel of the Console app I noticed this line: 10/27/13 3:38:03.000 PM kernel: ...
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1answer
131 views

How to make Linux reliably boot on multi-cpu machines?

I've got two machines, one with 4x12 AMD Opteron cores (AMD Opteron(tm) Processor 6176), one with 2x8 Xeon cores (HT disabled; Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz). On both machines I experience ...
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0answers
7 views

How to approach searching for sources of interface unresponsiveness

On Debian Linux: On a relatively powerful machine I ran an update and both the kernel and the window manager got updated to newer version. At that point the machine become noticeably less responsive: ...
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0answers
52 views

How to debug a kernel created using ubuntu-vm-builder?

Aim: Trying to perform a code walkthrough of what functions are getting called for sending and receiving packets over the network. I am building a kernel and using gdb for debugging/ tracing ...
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0answers
15 views

Is there any boot analyser that works straight after GRUB

and analyse the whole process of loading Linux kernel till you get to see the desktop of your PC
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1answer
61 views

Which classes of drivers require an ABI bump for Windows 8.1?

I noticed that Windows 8.1 installed a lot of new drivers for several of my devices, but I don't know if that's because there was just an updated one available on Windows Update, or if the kernel ...
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1answer
165 views

Where is config kernel file in ubuntu10.10?

I am trying to follow these instructions http://linuxwireless.org/en/users/Drivers/ath9k_htc and it is telling me to edit my kernel config. I don't know where it is.
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74 views

Are linux driver support at kernel level?

Until now, I thought that linux drivers are at kernel level. That means, drivers are packed inside the kernel, so different distributions should support the same hardware as long as they run the same ...
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2answers
881 views

Linux - prevent disks spinning up

On bootup all disks are spun up, but 4 are just backup (and pretty noisy too). Soo I'd rather prefer to never ever spin them up at all when booting. Is there a kernel option which tells the kernel ...
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1answer
52 views

On certain Linux boxes, variables in the stack seems to be initialized to 0 - why?

I have a buggy program that pushes a variable onto stack and may use it without initialization. I take the same binary and run it on different Linux boxes. Those boxes have different CPUs (i5, i7), ...
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0answers
67 views

linux + squashfs-tools for red-hat 5.3

I want to install the squashfs-tools-4.0-5.el6.i686.rpm But I have the following dependencies ( after RPM installation ) please advice what the additional packages that I need to install on my linux ...
3
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1answer
1k views

Adding system call to kernel 3.11 [closed]

What I want to do is add a dummy system call to the 3.11 Linux Kernel. What I did: Downloaded and extracted kernel v3.11 from kernel.org and placed it in /usr/src In file, ...
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0answers
72 views

How to kill the issue with Linux, where most modern USB devices coming with 500mA MaxPower?

I have Sound card, Camera devices USB interface, all of them i have are 500mA MaxPower showing using lsusb -v | grep MaxPower Now those hardwares with Linux works about 1 hour or half hour and then ...
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2answers
13k views

Obtain kernel config from currently running Linux system?

I accidentally deleted my .config for my kernel configuration on Linux, and seem to remember there was a way to retrieve the kernel configuration via the proc filesystem somehow. Is this still ...
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1answer
3k views

How to configure a Linux kernel based on the modules currently in use?

I'm willing to build a minimal kernel with only the needed things for my machine; so I started by compiling the kernel from the ground up, using the default configuration and adding things that I know ...
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0answers
145 views

Mouse stops moving after a every few seconds, but revives after click action

I am using Arch Linux and according to "uname -r" my Linux Kernel Version is 3.10.10-1-ARCH. This problem appeared after a full system update recently. Any idea how to fix this? Thanks in advance ...
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3answers
11k views

Windows Kernel Name\Version?

Mac OS X has the Darwin 10.6.0 Kernel, and Ubuntu has the Linux 2.6 Kernel, so in Windows what is it called?
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3answers
5k views

Kernel NTFS driver vs NTFS-3G

A more comprehensive phrased question since I lost access to the other one. I would ask that the other one be deleted, not this one, as it should not have been migrated in the first place. There are ...
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2answers
919 views

Failure booting my custom kernel

I compiled and installed a custom Linux kernel using Debian kernel-package. Everything went OK: .deb files were created and custom vmlinuz and initrd.img were created in /boot and /boot/grub/menu.lst ...
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1answer
168 views

Linux kernel option to force video card to stay on

I just installed Debian Wheezy 7.1.0 on an Intel vPro System (Intel Core i5-2520M, SuperMicro MBD-X9SCV-Q-O). Intel AMT's KVM works perfectly until Debian has completed booting and shows the login ...
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1answer
276 views

Getting console message: ipc_kmsg_copyout_header: can't grow user ipc space. Any Mac OS X kernel gurus in here?

Ever since upgrading from Mac OS X 10.6.5 to 10.6.7, my computer has started locking up frequently (usually at least once every couple of days). I will get the spinning pinwheel and the system will ...
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1answer
58 views

Should I use a server kernel when making a ssh server?

I am setting up my desktop as an ssh server and leaving it at home while I travel and connect with a laptop. Will the server kernel provide any advantages for such a simple use as this? Like energy ...
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4answers
344 views

Home wireless router as a PC

Is it possible to install a small program on a cheap home router that runs a Linux kernel and run it? I mean can I use a router that runs a Linux OS as a small computer to run arbitrary code on it? ...
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1answer
56 views

Is the source code for OS X kernel logging messages available via XNU, or is it “proprietary.”

It would be kind of nice to understand just exactly WHAT all those messages that appear in log files really mean. I'm not necessarily talking about errors, but even informational messages. I realize ...
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2answers
150 views

Advantages / Disadvantages to rolling my own Linux kernel? [closed]

I was thinking about installing a fresh copy of Ubuntu on my main machine. Along with doing so I was thinking about rolling a mainline kernel to get all of the latest support for hardware and such ...
2
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1answer
360 views

Kernel bypass possible with non-specialised NIC?

Is it possible to perform kernel bypass and have a NIC send data to the user space (where I will write my network stack) with no copying, without having to purchase a specialised Solarflare etc NIC?
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2answers
1k views

Is it possible to compile a Darwin Distro from source, like you can a build a Linux Distro?

I have read through and undertaken Linux From Scratch (and BLFS) and I was wondering, can I follow this guide to create a Darwin Distro by substituting the xnu kernel? Would the process be vastly ...
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118 views

How do I configure fsnotify's queue size/watch limit on OSX?

Note: This might be a StackOverflow question, since it's about something that's only accessible via the internal API on OSX, but I'm posting it here since it seems to be more about using a tool that's ...
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0answers
27 views

When an image on an editing program is rendered on Windows, is the program parsing it, or is the kernel doing it?

so I know this question is confusing, but luckily I am a computer programmer and can make it more clear if you would help me out by reading on. A simple program, liek MS-Paint, will "know" how to ...
2
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3answers
4k views

Unable to mount DVDs on Gentoo

I'm unable to mount any dvd on my HP 6735s laptop running Gentoo (with combined stable (+) and testing (~) ebuilds). Here's everything that I can come up with: $uname -a Linux aiur 2.6.32.6-aiur-r5 ...
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1answer
265 views

Linux from Scratch [LFS] developing environment?

I've recently delved into the LFS pdf in hopes of building my own OS and learning in the process. However, in the beginning of the book, they continue to speak of a development environment and how ...
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2answers
77 views

Re-Downloading Linux (Kernel) Source

yesterday i downloaded source of my virtual linux kernel and tried to compile it. It compiled indeed but could not boot from the new kernel. Then today i decided to re-downloading after removing ...
2
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1answer
3k views

DKMS fails to compile fglrx-driver on Debian Sid (using kernel-3.10-1)

My 'play' box (Debian Sid) just received an update for the kernel (3.10-1-amd64). Right after I installed appropriate linux headers I received an error from DKMS indicating failed build. Below is the ...
0
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1answer
642 views

Configuring DRAM size when compiling an ARM (linux-sunxi) kernel for an allwinner a10 tablet

I've got a goclever a103 tablet (http://goclever.com/goclever_tab_a103) and I want to install linux on it to boot it from an SD card. First thing I found online were SD card images for a very similar ...
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3answers
261 views

Wine and Kernel Access

My knowledge on the topic is rather limited, but does one have Kernel access/the general ability to change programs at run time whilst running Wine? For Clarification: Can the user of the computer ...
0
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2answers
98 views

Install VC Redist 2008 on Windows Server 2000

I recently set up a server with Windows Server 2000 (I know it´s old, but the hardware of the computer wouldn´t take more than that). Now I installed xampp which requires the VC redist package 2008. ...
2
votes
1answer
1k views

Extreme Kernel Paged Pool Memory Use (Win 7 64-bit)

I'm currently running Win 7 Pro 64-bit on a file server system with 12 hard drives. The drives are connected through 2x IBM M1015 controller cards (flashed to LSI 9211-8i IT mode firmware). I'm ...
0
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1answer
307 views

Compiling Linux Kernel with headers (AMD FX Piledriver)

I have compiled Linux kernel 3.9.7 for my AMD FX 6300 (with AMD selected as processor vendor during kernel compilation). After the installation, I restarted the system, and found that the ...
2
votes
1answer
52 views

PearOS - Is it actually Linux?

I just downloaded PearOS 7 for both its look and the fact that it was linux... Until I thought about it. PearOS is a distro that was made by a french developer. Does it use the kernel that say... ...
0
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1answer
209 views

Where is my /boot/grub/menu.lst file

I m using VMware for my linux version Ubuntu 11.04 and i have searched for /boot/grub/menu.lst file but this file was not there. Why?? I was creating a new kernel in virtual linux but unable to ...
4
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1answer
314 views

FreeBSD compatibility layer on Linux

I am aware of Linux mode on FreeBSD, where Linux binaries can seamlessly be executed in FreeBSD. From the FreeBSD handbook: In effect, there is a Linux kernel in the FreeBSD kernel. The various ...
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1answer
258 views

“make xconfig” with arch linux

I'm trying to compile a kernel for Arch. I'm using "arch method" - abs, edit PKGBUILD and then "makepkg". Problem is, my Arch is using xfce 4 + gnome 2, but i want to edit my config file using ...
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1answer
1k views

How to compile and install new kernel in Chrubuntu with samsung exynos 5 (ARM coretex-A15)?

I have successfully installed Chrubuntu 13.04 (kernel version 3.4) on samsung Chromebook Exynos5 with ARM coretex-A15. And I also tried to update the kernel version to 3.9 by downloading new kernel, ...
3
votes
1answer
238 views

enabling CONFIG_LIBIPW on kernel compiling

I need to enable CONFIG_LIBIPW=m on kernel 3.4.0 I see that IPW2100, IPW2200, and PCI needs to be enabled, but I could not find any clue where they are on the menuconfig. I read on ...
0
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1answer
96 views

What's the type of my Ubuntu kernel?

Four commands on my pc: $ dpkg -l |grep linux-image Linux kernel image for version 3.4.0 on 32 bit x86 SM It means my Ubuntu kernel is 32 bits? $ uname -a Linux ny 3.4.0-030400-generic ...