General :: Difference Between /proc And /sys?
Jun 10, 2010the difference between /proc and /sys? Also, When enabling public-key authentication using SSH, what file on the remote machine must be modified and how?
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Networking :: Find Out What Is The Difference Between Wifi0 And Ath0 (atheros Wifi Card) In Terms Of Packet Counters Shown In Proc/net/dev Pseudofile
Aug 20, 2010I'm trying to find out what is the difference between wifi0 and ath0 (atheros wifi card) in terms of packet counters shown in proc/net/dev pseudofile. The fact is that wifi0 and ath0 packet counters are different. I've read that wifi0 refers to the physical device and ath0 refers to virtual device over wifi0, so, as far as I know, packets counters in both devices should be the same, isn't it? Another annoying question for me is that ath0 doesn't show any erroneous packets, while wifi0 does.
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Fedora Installation :: An Error Occurred Mounting Device Proc As /proc: Mount Failed
Jul 6, 2010I'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)
General :: Duplicate Ids In /proc/locks
Mar 30, 2010Red Hat Enterprise Linux Server release 5.4 (Tikanga) 2.6.18-164.11.1.el5xen (Xen release for virtualisation)
I'm trying to track down a problem with a utility that used to work and now hangs indefinitely. Since its hanging, I suspected a locking problem, and went to have a look for the process ids in /proc/locks; I get:
148: FLOCK ADVISORY WRITE 30279 ca:21:49153 0 EOF
148: -> FLOCK ADVISORY READ 30282 ca:21:49153 0 EOF
Now as near as I can tell this shouldn't be my problem, since the two ADVISORY locks - one READ and one WRITE - shouldn't conflict with one another. But I'd like to understand it all the same. I haven't been able to find any kind of definitive guide for the format of /proc/locks entries, but what I did find in the manuals specifically states:
"Each lock has its own line which starts with a unique number. "
Which is obviously not true; both of my lines start with the same number. Also, since most search engines don't seem to play nicely with symbols, I can't find any reference to what the "->" means.
General :: How To CPU Usage Of Process From / Proc?
Jul 15, 2011I am currently writing a JAVA script to monitor certain unix processes through JConsole. Upon having lots of trouble with runtime.exec, i decided to bypass the top/ps command call and just get the information straight from /proc/*pid*/whatever.Now i can pull back any information from any of the files I want, and the current way i determine the CPU usage of a process is as follows:
Add the UTime and STime of that process from /proc/pid/stat then divide my pidCpu by UTime + STime + NTime from /proc/stat, then multiply that by 100, should give me the % cpu usage a process is using, right?Theory being if I get the jiffies assigned to my process, I can divide that by the total jiffies the cpu assigns. However, my results seem to vary from the ones gathered from top and ps. What am I doing wrong?
General :: How To Remove /proc/sys/fs/binfmt_misc
Aug 8, 2010unknow filesystem in my computer./proc/sys/fs/binfmt_miscPlease help me for remove this filesystem.How i do remove this filesystem?OS : ubuntu 10.04
View 2 Replies View RelatedGeneral :: Alternative To /proc/bus/usb/devices For Use In A Terminal?
Aug 24, 2011/proc/bus/usb/devices should not be used anymore (and can't be mounted anymore on Ubuntu 11.04) But what is an alternative to it, for use in a terminal? I could easily grep that output to look for a certain device, but I'm lost in all the /sys/ entries...
View 1 Replies View RelatedGeneral :: Determine Socket From /proc/cpuinfo?
Jan 13, 2010Is there a simple way to determine the CPU socket from the output of /proc/cpuinfo. Determining the type of processor is simple enough, but the processor I have (Celeron) has two different possible sockets. The output of /proc/cpuinfo is:
processor : 0
vendor_id : GenuineIntel
cpu family : 15
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I've looked on the Intel processor finder web site with appropriate filters, but the stepping values do not appear to match anything.
General :: Interpretation Of /proc/pid/sched Output?
Jan 6, 2011in understanding the output of /proc/pid/shed
se.exec_start : 0.000000
se.vruntime : 26974.800748
se.sum_exec_runtime : 198.280320
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General :: Unable To Open /proc Folder?
Sep 13, 2010i had some issue with the machine rebooting multiple times, What happens is that the machine boots up and suddenly crashes and then boots up cleanly. I was going through the log files during when this occurs. I came across /var/log/syslog which i guess logs messages before shutdown. It has following messages which i think are causing problem.
Could not open /proc/26694/stat: No such file or directory
Could not read the file /proc/26694/stat
Could not open /proc/31128/stat: No such file or directory
Could not read the file /proc/31128/stat
Does any one know what these messages are?
General :: USB And Hard Drive Listed In /proc But Not /dev
May 10, 2010I'm working in CentOS 5.4 with the default 2.6.18-164 kernel (which I will be editing but have reverted back to in order to solve this problem.)
Near the end of the init script I have thrown a /bin/sh to get into a busybox bash shell in order to test some scripts. Ive attached the init below.
While in this shell I can see my usb drive in /proc/bus/usb/devices and my hard drive in /proc/scsi/device_info however I cannot mount them as they are not in /dev.
I have scsi emulation set in the kernel. When I plug in a USB stick it finds the address but still no sign of it in /dev. There are other modules listed in /sys/module such as usbcore that dont show up in lsmod, is that possibly the problem?
Init Script
Quote:
#!/bin/nash
mount -t proc /proc /proc
setquiet
echo Mounting proc filesystem
echo Mounting sysfs filesystem
mount -t sysfs /sys /sys
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General :: Source Which Created /proc/stat?
Jun 16, 2010I would like to find out what sources created this /proc/stat?
View 2 Replies View RelatedGeneral :: Will Proc / Cpuinfo Gives CPU Info Per Core Or Per Thread?
Jul 18, 2011My CPU has 2 cores, so I can see two parts in /proc/cpuinfo.But, I want to know if CPUs that support Hyper-Threading (or similar tech), will /proc/cpuinfo give CPU info per core or per thread (or call it sibling)?I only know that Windows Task Manager will give CPU usage statistics per thread if the CPU supports HT.
View 2 Replies View RelatedGeneral :: Setting /proc/sys/vm/overcommit_memory To 1 And Then Exhausting Addresses
Aug 4, 2011As I understand it, setting /proc/sys/vm/overcommit_memory to 1 is supposed to make sure malloc always succeeds, and set the OOM killer loose if there's an actual memory problem.
I'm wondering what happens when you've malloc'd so much memory that you've exhausted the address space for your process? Does it return NULL despite the overcommit_memory setting, or does your process get a signal? Or something else entirely?
General :: Change Permission To /proc/net/ip_conntrack On Ubuntu Server 9.10
Mar 28, 2010I have a script that needs to extract certain information form the /proc/net/ip_conntrack file once in a while. I do not wish to run this script as the root user.
Default permissions for the file is:
I can change it with:
But that does not stick after a reboot. Is there some configuration file for file-permissions in the /proc directory in Ubuntu Server 9.10? Or do I just have to stick a chmod line in some startup script?
General :: Using The /proc File Systems To Increase Performance And Functionality?
Jul 5, 2010I'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
View 2 Replies View RelatedGeneral :: Understand Cpu Family/model/stepping Fields In /proc/cpuinfo?
Feb 26, 2011I have following in cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
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General :: Find Which HT-cores Are Sharing A Physical Core From /proc/cpuinfo
Sep 2, 2011There is a computer with two "Xeon(R) CPU X5550 @ 2.67GHz" CPU. The Hyper-threading is enabled, so it looks like 16-core system, but really there is only 8 physical cores.
I know that when hyperthreading is enabled, each physical core is splitted into two virtual cores. I want to know, which pair of virtual cores shares a physical core and which are not. Or, how (in what order) will Linux enumerate HT-cores comparing to real cores. (enumerating is done for sched_setaffinity and taskset masks).
I have a dump of /proc/cpuinfo file from the system.
I think there are possible:
CPU0-CPU7 are not sharing phys. core. CPU8-CPU15 too. But sharing is in pairs CPU0+CPU8, CPU(i)+CPU(i+8) and so on. or CPU0+CPU1 are from single physical, CPU2+CPU3, CPU(2*i)+CPU(2*i+1). or exotic CPU0+CPU15 sharing, CPU1+CPU14 ... or random?
The hard moment in this case is that there are 2 physical dies of CPU (two sockets), and usual recommendation of using "physical id:" field can't help
The cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
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General :: Ifconfig Indicates Different Interrupt Number For Eth0 Than Proc Aqd Sys File System
Sep 22, 2011On 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:
General :: Java Process Without Memory Detail In Proc File System?
May 13, 2010To 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?
General :: Non-root Access To /proc/scsi/scsi
Jun 23, 2011Some of our workstations have LTO's attached and they seem to drop off every now and again, the only thing which picks them up again (besides a reboot) is the famous rescan-scsi-bus script from here
The thing is that I'd like non-root users to be able to run this script, which in turn needs root to /proc/scsi/scsi
General :: Difference Between Df -k And Du -sh?
May 5, 2011df -k
/dev/sda6 25396228 21249088 2836240 89% /export
21G used[code].....
The 3.4G is correct because we have removed all non essential file but free space reported by df is not consistent with the actual free space that should be there.
General :: Difference Between GLX And EGL
Apr 4, 2011the difference between GLX and EGL?
View 1 Replies View RelatedGeneral :: Difference Between C And Gcc
Oct 14, 2010what is the difference between C and gcc...
View 12 Replies View RelatedGeneral :: Difference Between NIS And NIS+?
Feb 17, 2010Last week in one of the Interview Dump Papers I read about NIS+. Anyone who can quick reference how the setting up NIS is different from NIS+.
View 1 Replies View RelatedGeneral :: Difference Between GUI And KDE?
Jul 12, 2011what is the difference between a GUI and KDE..
View 5 Replies View RelatedGeneral :: Difference Between SSH And SCP?
Aug 4, 2009I need to know the exact difference between SCP and SSH can somebody explain please as i am confused as both seem to do the same thing if so let me know what the difference is.
View 4 Replies View RelatedGeneral :: Difference Between Tty And Pts
Mar 16, 2010What is the difference between /dev/tty and /dev/pts ??
I google a lot but didn't understand......
Thanks in advance
General :: What Is The Difference Between |less And |more
Jan 29, 2010What is the difference between |less and |more ?
View 7 Replies View RelatedGeneral :: What Is The Difference Between Two ISO's
Apr 12, 2010I tried to download ISO file and saw ,Download ISO 1 and Download ISO 2 .What is the difference between two ISO's?
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