Ubuntu Multimedia :: Any Advantage To Realtime Kernel
Jan 10, 2010
Just got Studio 9.10 running and the RT kernel installed. I have a Prescott P4 3.2ghz (hyperthreading) and i encountered what looks like a common freeze problem. I am guessing my cpu will not be supported in the RT kernel since it is pretty old now.I added nosmp acpi=off during boot at the Grub2 menu and it booted fine and I was able to capture some video great.
My questions is, if I remove the smp support by using the nosmp option, do I still benefit from the RT kernel or would I do just as well with the generic kernel I have installed?Eventually I will upgrade do a new system board and processor but for now I just got some life back in this one by switching to Linux
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Oct 22, 2010
My main computer (HP Pavilion 510n) only allows 512 meg ram.I've never built a kernel for Slackware.I'm running 13.0 :2.6.29.6 #1 Mon Dec 7 16:34:06 CST 2009 i686 Intel(R) Celeron(TM)CPU 1200MHz GenuineIntel GNU/Linux.Would there be any advantage to build a new kernel for 512 megs ram maximum? I do basic stuff with this: browse, email, video clips, music.
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Oct 3, 2010
i need to use the realtime kernel because i use jack audio connection kit so i tried to install the realtime kernel from the install/remove software program. I've found 2 kernels : Kernel-trace and kernel-rt i tried both of 'em but i cannot boot up suse. The first one gets to 3/4 of the loading bar , i hear the welcome sound and then it won't do anything else. The second won't do anything, black screen.
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Jan 25, 2010
I succeeded with the 2.6.31.12-rt20 on the Slackware 64 13.0.Kernel config seems fine, i use PAM.I can launch jackd as user with the realtime flag, BUT...Using top and htop, i can see that /etc/security/limits.conf or /etc/security/limits.d/limits.conf or wherever i put this file, priorities and nice are not set.Of course i added this to this file :
@audio - rtprio 99
@audio - nice -10
@audio - memlock 500000
[code]....
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Oct 26, 2009
I am trying to install vmware server on CentOS: In vmware installation guide it says before intalling:
Before you begin, read the following notes and make adjustments to your host system: The realtime clock function must be compiled in your Linux kernel. The parallel port PCstyle hardware option (CONFIG_PARPORT_PC) must be built and loaded as a kernel module (that is, it must be set to m when the kernel is compiled).
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Jul 21, 2010
I have investigated loads and loads of options and haven't really yet come across what I need.
I wish to stream the microphone input from a PC using Lucid to another PC also using Lucid on the same network. I don't care about the quality, however, latency is really important. I hope to use it to monitor the cries of my baby daughter, so the lower the latency the better.
I have tired various options:
- FFserver and FFmpeg - latency of over 30 seconds
- VLC - couldn't get it to work with my mic and maxes out the CPU
- ssh server 'cat /dev/dsp > /dev/dsp' - latency of around 5 seconds by audio keeps breaking up with huge delays
- icecast2 and darkice - latency of around 7 seconds but no audio breakups
I've been reading on maybe using PulseAudio to stream the input, but I am not sure if it will work or not...
how to get near real-time streaming audio? As I said, it is the realtime, not the quality that is important...
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Nov 1, 2010
I am not able to start JACK in realtime mode. This is a bummer. here is the error message I get:
p, li { white-space: pre-wrap; } 11:58:20.745 Patchbay deactivated.
11:58:20.746 Statistics reset.
11:58:20.812 ALSA connection graph change.
[code]...
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Jun 28, 2011
is there a realtime or low-latency kernel in a repository somewhere for OpenSUSE 11.4? I know I can just compile a rt kernel, but that's a bit tedious and I'd like to avoid it if possible.
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Jul 25, 2011
As the title says, I'm looking for a command to resize on the fly as I capture. My desktop's 1680x1050, but I want to shrink down to say 1280x720.. or other.
So far my command is code...
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Apr 30, 2011
I cannot start jackd in X with realtime scheduling:
[Code]...
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Nov 30, 2008
I can be granted permission, and I'm in the proper groups, but pulseaudio tells me I can't get permission.. I wanted to see if anybody else had this problem / knew of a solution / isolate whether it is a pulseaudio, policykit, whatever problem, before I post a bug upstream.
Code:
[Sun 07:25 AM] ~ $ rpm -qi pulseaudio | awk '/Version|Release/ {print $1$2$3}'
Version:0.9.13
Release:3.4
[Sun 07:25 AM] ~ $ groups
[Code].....
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Jun 6, 2011
I am running 13.37 on a netbook with the Intel 945GME chipset. I can't seem to locate any information on whether how 2.6.38.4 is better and worse than 2.6.37.6.
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Dec 3, 2010
I have seen a lot of posts about Zeitgeist and have done a fair bit of googling but I can't figure out how it is used.
For instance, I see docky helpers for Zeitgeist. What do they do? How do I take advantage of them? Is there integration with nautilus elementary? If so how to take advantage of this?
I know ir's running:
I needs a dummies overview please. I understand that it keeps track of what and when various things were accessed but what do with this? How do I use it?
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Apr 17, 2011
What the advantage of having 64 bits when using a wifi application? I intend to buy a HP ProBook 4520s.Will it be harder to install new software on 64 bits? and does it exist for wifi?I am concerned at using 64 bits laptop when installing a wifi application?Is there enough wifi application for 64 bits and even for 32 bits?
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Apr 24, 2011
Modern systems seem to be EFI based, and while there's a specific version of lilo that works with it, i can't seem to find any mention of a efi varient of grub (edit - on modern debian derivative systems there's grub-efi. Most references to it seem to be about various bugs in/for it tho) . In general, how well is EFI supported on linux?In addition, apparently windows 7 uses EFI to enable faster boot - 12 seconds or so with some systems. While a properly tweaked linux system could probably come close, are there any enhancements to the linux booting procedure that take advantage of EFI?
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May 25, 2011
Currently I have F15 running with the nouveau driver. What is the advantage of installing the nvidia driver?
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Jun 6, 2011
I'm planning on installing fedora 15 and several servers (http, ftp, svn, mail++) but I wonder what the advantage is by installing and running a DNS server on that same box?
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May 10, 2009
What good does getting into single user mode do?And what's the basic purpose of it , i.e is it maintaining purpose???
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Feb 17, 2010
I am attempting to mount my Direct TV DVR (HR22) SATA Drive using Fedora 12 x86_64 using the following command:
The output of BLKID is:
I am able to mount this using MSFLive.org LIVECD/USB: [url] and knoppix
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Oct 12, 2010
I just installed Maverick Studio on a new hard drive, and am using an NVIDIA GeForce 7300 LE GPU. If I boot into the 2.6.35-22-generic kernel, everything runs fine, but if I try to boot into either the 2.6.35-20-Low Latency, or 2.6.33-29-Realtime kernels (installed from Synaptic), the computer boots straight to a command prompt instead of the desktop. Does anybody know what causes this? I need to be able to use one of these kernels for doing music production.
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Oct 15, 2010
I am striving to setup OSSEC to monitor some specific files for realtime changes! Is this possible? I can't really find a lot of info from their Documentation
Some Examples:
/etc/myfile.txt is deleted. I need this to be reported.
/etc/myfile.txt is created again so I need this to be reported again!
This has to happen instantly though, because the file might be deleted and created again many times in a short period of time.. Another one...
/etc/passwd is touched (accessed) even if there is no changes! Can this be reported as well?
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Apr 14, 2011
I posted this in the Networking section, but should probably be over here. Couldn't move it. I have a transparent proxy in place. I have Webmin installed on the server. Is there an app that can monitor bandwidth in real time? Also run reports? I have SARG installed, but seems to only monitor HTTP traffic, I need to monitor all traffic. I have a bridged connection, but monitoring the outside interface is fine too.
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Dec 28, 2015
What command to show MAC and IP of any computer conected in realtime?
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Jan 5, 2010
This might be a very stupid questions, but I'm wondering if anyone can tell me if there are any antivirus software for Linux?I know that it normally is not something that is needed, but in the company where I work they have a policy saying that every OS must have a realtime anti virus program installed on the pc's with automatic updates.
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Nov 29, 2010
I need to let a second user configure a part of my server and I wish to both log what the user is doing with terminal and view it in realtime so that I can react if something goes wrong.
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Jul 23, 2009
I was listening to some Chopin today and I thought how cool it would be if there would be a way to put the sound output of Amarok (or anything else, maybe line-in or microphone) through some effects that would make it sound like being read from a vintage vinyl disk. Or when listening atmospheric folk songs about forests, it would be really cool to add some echo or reverberation, so it would sound like a large forest, ooor... But you get the idea. Is there any nice way of putting Amarok's sound through JACK, and from then on through a sound effector?
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Jan 25, 2011
Normally i use "arecord" to capture and dump in a file (.wav). If i want to play the file then i use "aplay". But, is it possible that, insted of capturing to a file and then playing the file offline, if i want to play it realtime
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Dec 6, 2010
Does anyone know how to enable realtime scheduling for users without having to install PAM?
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Apr 15, 2010
I have been using parts of the MRG (kernel-rt, qpid[dc]) package for some time; thanks to Johnny Hughes (hughesjr) for providing the initial binaries. Recently, I discovered that CERN builds MRG for their ScientificLinux distribution, which is a derivative of CentOS.
You can view the package list from their repoview or browse all the packages they support here. I have found these packages to be compatible w/ CentOS. Perhaps something can be done to leverage this work to make MRG available as part of CentOS?It's straight forward to setup a .repo file to pull MRG directly via yum, including updates.
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Feb 9, 2010
I am attempting to mount my Direct TV DVR (HR22) SATA Drive using Fedora 12 x86_64 using the following command:
The output of BLKID is:
I am able to mount this using MSFLive.org LIVECD/USB: [url]
I must have something wrong with my installation in some what so that i can't mount a Realtime XFS Share in Fedora 12.
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