Red Hat :: Generate Default_smp_affinity File In /proc/irq Virtual Directory ?
Mar 16, 2010
I am using RedHat MRG on a standalone intel PC that has 8 cpus. It has 2 Quad cores. I am trying to force some specific persistent tuning on it so that the OS and IRQs are all on one CPU socket and then I can run my Application on the other CPU socket (4 CPUs) using the taskset command.
I have been reading up on this mainly at [url] and having some success. But, I have one IRQ that is not active until my application runs that I want to force it to be on CPU 4.
And so I believe I can do this by setting /proc/irq/default_smp_affinity to 10. But, I do not have such a file on my system. How can I create this file at boot time properly?
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Jan 14, 2010
I am booting RH 5.4 over network (PXE) with custom initrd.img. I managed to get NFS working and switch root and do normal RH /sbin/init, but as RH boots it complains about /proc/devices missing:/proc/devices: fopen failed: No such file or directoryThe file is indeed missing, even though I'm doing "modprobe dm_mod" before. But still /proc/devices is not created. What am I doing wrong?init script for that initrd.img:
Code:
#!/bin/bash
export LD_LIBRARY_PATH=/lib:/usr/lib:/usr/kerberos/lib
[code]....
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May 19, 2009
i'm using Centos 5.3 (2.6.27.10-grsec-xxxx-grs-ipv4-64 x86_64 kernel) and i got a problem with installing apf/configuring iptables. It seems that my kernel doesn't support Loadeble Kernel Modules. I'm receiving following message when catting /proc/modules: Quote: cat: /proc/modules: No such file or directory /sbin/modprobe -l FATAL: Could not load /lib/modules/2.6.27.10-grsec-xxxx-grs-ipv4-64/modules.dep: No such file or directory
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Apr 23, 2011
As I'm gonna transfer large amount of data folders from one hard drive to another, I wanna make sure that the transfer has not corrupted the data. how could I generate MD5SUMs of entire directory including sub directories, in a single file and later, how could I verify with the data I've just transferred.
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Aug 23, 2011
I have some errors when run the mount -all command: mount: wrong fs type, bad option, bad superblock on /dev/sdc5, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so Failed to open /proc/filesystems: No such file or directory
[Code]..
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May 4, 2010
When I enter "cat /proc/scsi/scsi" I'm returned with "cat: /proc/scsi/scsi: No such file or directory". I've tried this on two different installs on two different machines.
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Jun 24, 2011
Why do I keep getting .gvfs (gnome virtual file system) file appearing as corrupt in /~/usr directory, I can get rid of it by unmounting, but it re-appears later on. It is causing problems as it interrupts my backups (which are automated) with an error message,ListError .gtk-bookmarks/.gvfs [Errno 13] Permission denied: '/home/jimt/.gvfs'
drwxr-xr-x 2 jimt users 4.0K Jun 22 22:00 .gstreamer-0.10
-rw-r--r-- 1 jimt users 132 Jun 24 11:50 .gtk-bookmarks
d????????? ? ? ? ? ? .gvfs
-rw------- 1 jimt users 4.3K Jun 24 11:50 .ICEauthority
drwxr-xr-x 3 jimt users 4.0K Jun 23 08:41 .icedteaplugin
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May 11, 2011
We used VoilaSVN for SVN search. Some time ago it stopped working for an unknown reason. I was searching for a solution, but the voila project seems to be dead, the web pages are not available. I assume the problem is in indexing. Does anybody know how to generate the index directory?
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Aug 18, 2011
I'm trying to generate a list of my music directory folder structure WITHOUT the files included. I have my music directory set up in a hierarchy of Artist>Album>Files, and I just want to generate a list of the folders because that will, in effect, output a list of what albums I have by what artists, which is ultimately what I'm after. I did some looking on the internet through various forums over the past few days and found two ideas that looked promising, but ended up being not exactly what I needed. The first was to generate a .txt file based off of a shell ls command:
ls -R [music directory name] >> ~/mymusiclist.txt
That's great, except that it also includes the 40,000+ individual music files by name. I'm not about to invest that much time editing the files out of the list when I know there has to be an easier way.The second idea I came upon involved using the extglob function. I tried enabling extglob and using it to input a "negative wildcard" into the above method to remove anything .mp3 from the returned list, but extglob didn't play well in that context. I'm not a command line wizard, so it's entirely possible that I'm missing something fairly obvious. In fact, I'm sure I am. So this is a great opportunity for me to learn something new. If anybody knows of a command line way to do this, I'd love to know it. Or, even better, if anybody knows of an app that can do this, even better. I'm not above installing a secondary music player just to import the library once and get my list.
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Jul 6, 2010
I've got the F13 LiveCD that I was able to boot and use using the "nomodeset" boot option. From the desktop I'm trying to perform an Install to Hard Drive. I've read the Install from LiveCD post regarding the creation of a /boot partition and a / root partition. I've tried creating them without the LVM group and with. But every time I appempt to install I get...
An error occurred mounting device proc as /proc: mount failed: (9, None). This is a fatal error and the install cannot continue.
Hardware is a Sager 8887 (P4, 3.06HT, 60GB HDD, Radeon 9000 graphics adapter)
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Jul 22, 2010
does any one knows a linux based program/script that can generate html files based on directory structure?
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May 28, 2011
There's a podcast on the internet I love, and I would like to have them all in the same playlist. This podcast doesn't put their episodes in a playlist. Are there any software or scripts I can use for this to work so I can simply just type in the http://url/directory, and have all the mp3 files in a playlist. Or if the playlist part isn't possible, then at least a text documents with all the links?
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Jul 9, 2009
parsing xml file using shell script and generate report in a PDF file
Xml file input:
<report>
<student name="x" father name="x1" class="first" Address="xyz">
<property name="sports" value="yes"/>
<property name="drawing" value="no"/>
[code]....
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Dec 19, 2010
So I use the following to rip audio from one .mp4 file and then generate one .mp3 file.
Code:
caleb@linux-vmp1:~> ffmpeg -i a -ab 128000 -ar 44100 01.mp3
Obviously, this takes a file named a and makes a file named 01 that is an mp3. It works great and I have used it many times. The problem is, I would like to rip the audio from several files all at once. I am sure there is a way to do it but I haven't stumbled upon the way to do it.
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Mar 26, 2010
I'd like to use a keymap not present in slackware "fr-dvorak-bepo" with mkinitrd because my root partition is encrypted by luks. So how can I generate a .bmap file from a classic .map file for mkinitrd ?
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Apr 11, 2011
In my understanding, the way /proc/scsi/scsi gets populated, /proc/paritions also gets populated in the same fashion. i.e. the description for first entry of /proc/scsi/scsi can be seen in the first entry of /proc/partitions and same for rest.
So, With this assumption, in my project, I used to relate first entry of /proc/scsi/scsi with first entry of /proc/partitions to get its total size and same for all entries.
But, I observed some differences in following scenario, where
1) The first 4 entries in /proc/scsi/scsi are SAN luns attached to my system and for which the actual device names in /dev/ are sda,sdb,sdc and sdd.
2) The last 4 entries are the internal HDDs on same system. In /dev/, their respective device names are sde,sdf,sdg & sdh.
(Output attached at end of the thread)
But in /proc/partitions, the device order is different.
You can see their respective sizes in /proc/partition output as well.
So, my question is, in this particular scenario, I can't relate the first entry of /proc/scsi/scsi with first entry of /proc/partition. i.e. scsi0:00:00:00 is not /dev/sde, because it is actually /dev/sda.
It seems that my assumption is wrong in this scenario.
Is there any way or mechanism to figure out actual device name for an entry in /proc/scsi/scsi in /dev/ directory?
How can my application should relate /proc/scsi/scsi entries with their respective device names and sizes?
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Jun 24, 2010
I am trying to edit the file shmmax in proc/sys/kernel/. I want to increase the value. I am using vim to edit it. But when I try to write and close the file I get the following error: "shmmax" E667: Fsync failed Press ENTER or type command to continue
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Sep 16, 2010
Trying to change permissions on a file in /proc/sys/fs/inotify. The command syntax are:
Code:
sudo chmod u+w max_user_watches
and the result is:
Code:
chmod: changing permissions of `max_user_watches': Operation not permitted Also tried to change it when logged in as root, same results. Parent directory permissions are dr-xr-xr-x, and are the same up the chain. Tried to change the directory permissions to u+w, that didn't work either. FWIW, /proc is part of the / partition, and it has ~600MB free space.
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Dec 8, 2010
I am trying to read the /proc/net/tcp6 file of a huge server (chat server) for monitoring the tcp6 connection states.
My server's tcp6 file has more than 26000 lines. For monitoring the server connections, my monitoring tool has to read the /proc/net/tcp6 file quickly in a regular interval (5 secs) and process. Presently it takes minimum 6-7 seconds for reading the whole file.
My tool can able to read the normal file (26,000 lines) less than 1 second, but it is not possible to read the same size of proc file.
I have 2 questions:
1) Why proc file takes more read time than normal file?
2) Is there any way to read the /proc/net/tcp6 file more quickly?
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Dec 7, 2010
I am trying to read the /proc/net/tcp6 file of a huge server (chat server) for monitoring the tcp6 connection states.
This tcp6 file has more than 26000 lines. For monitoring the server connections, my monitoring tool has to read the /proc/net/tcp6 file quickly in regular interval. Presently it takes minimum 6-7 seconds for reading the whole file.
My tool can able to read the normal file (26,000 lines) less than 1 second, but it is not possible to read the same size of proc file.
I have 2 questions:
1) Why proc file takes more read time than normal file?
2) Is there any way to read the /proc/net/tcp6 file more quickly?
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Jul 5, 2010
I'm interesting in knowing what processes could be altered to improve performance and functionality on my system. And which process may be the best one to alter
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Sep 22, 2011
On my system (OpenSUSE 11.4 - kernel 2.6.37) ifconfig indicates different interrupt number for eth0 than proc aqd sys file system.
ifconfig indicates 17:
proc fs indicates 43:
sys fs indicates 43:
Relevant part of lspci -vv output for irq 17 (this belongs to wlan0 and not to eth0):
Relevant part of lspci -vv output for irq 43:
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May 13, 2010
To get the kernel messages of new java process, i refer the details from /proc/<java pid>/stat and /proc/<java pid>/statm files. For some java processes, I didn't find any details in the /proc/<java pid>/statm file. It has only 7 number of 0s. But /proc/<java pid>/stat file has the details. And also this kind of process will have the life time of nearly 1 minute.
Kernel version using: Linux-2.6.18-8.1.8.el5 Is there any possibility of java process without the memory details in the /proc/<java pid>/statm file? If it is possible, how to know the memory related details of that processes?
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Jun 27, 2010
I have to get soem statistic about interfaces from /proc/net/dev. but statistic on this file is reset when get reach more than 4G byte.I think linux has limitation on this case.
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Apr 30, 2009
I'm having trouble with this developing tool... I dunno why but when I build my program, Lazarus compiles it, but keeps debugging and don't generate the file. Do anyone knows which may be the problem?
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Jan 20, 2010
Since the computer does not have xorg.conf, can I have the computer generate that file because I need to work on it and so I need to create it. That is why it would be useful to have a xorg.conf file still.
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May 14, 2009
I am trying to generate pdf file in hindi using pdflatex. my tex file is having unicode hindi text. it gives me following error.
! Undefined control sequence.
<inserted text> extdevanagarivowelo
{ extdevanagariha } extdevanagarivir...
l.38 end{document}
}
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Jun 24, 2010
I am trying to edit the file shmmax in proc/sys/kernel/. I want to increase the value. I am using vim to edit it. But when I try to write and close the file I get the following error:
Quote:
"shmmax" E667: Fsync failed
Press ENTER or type command to continue
I have read that this can be cause by a full disk. I checked with df and have plenty of space available.
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Nov 16, 2009
After a kernel upgrade on my linux, my grub.conf become empty. How can I auto generate grub.conf file? I don't want to do it from scratch.
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May 29, 2010
I'm trying to write a script to generate an html file (complete with formatting- echo "[random formatting]" >> index.html) for all the files in the given directory. So far, it works pretty well. HOWEVER, I want the listed files to be treated as links. I'm using awk to grab the part of the filename I want, but I don't know how to do this out as it fails if there is more than one file. The HTML side would look something like this:
Code:
<li><a href="2010.05.29.html">May 29</a></li>
It all works fine up to the actual number of the day- fine with one file, fails with more than one. My code is this:
Code:
# Grabs all the files and puts them in a list with anchor text "Listed"
ls | find 2*.html | sed -e 's/^/<li><a href="/'
[Code]...
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