Ubuntu :: Lucid - Out Of Memory In Seconds After Booting Kernel
Sep 4, 2010
Why my 10.04 install runs out of memory when it has hardly had chance to load the kernel. The symptoms were that it sometimes will hang after the grub screen with a blinking cursor. My user space splash screen doesn't appear either, it was when I was trying to fix that that I spotted the problem:
from my dmesg file:
Code:
[5.778823] lowmem_reserve[]: 0 0 24846 24846
[5.778829] HighMem free:3204284kB min:512kB low:3852kB high:7196kB active_anon:192kB inactive_anon:256kB active_file:596kB inactive_file:2288kB unevictable:0kB isolated(anon):0kB isolated(file)
:0kB present:3180408kB mlocked:0kB dirty:0kB writeback:0kB mapped:1240kB shmem:144kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:356kB unstable:0kB bounce:0kB writeback_
tmp:0kB pages_scanned:0 all_unreclaimable? no .....
This is a few seconds after loading the kernel.
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May 19, 2010
I've been using lucid since the pre alpha and I don't know why but I think it kept getting slower and slower to me until I've noticed "Windows" for god's sakes starts up faster than lucid! I've looked for some suggestions but nothing paid off. I've made a boot chart for my boot. I've noticed mount.ntfs-3g is taking too much time but how to stop it. My fstab is
Code:
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
[Code].....
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Aug 25, 2010
Is that possible that SHM shared memory is counted as cache memory on Linux with kernel 2.6.18?If find it really odd since this memory is not file backed, but I have a piece of code that loads data using shm_open+mmap, and it generates an amount of cache memory in /proc/meminfo that corresponds exactly to the amount of shared memory (I load that data from a file but I am using posix_fadvise(fd,0,0,POSIX_FADV_DONTNEED) to ensure this file is not cached and I made sure that it is working as expected). As far as I know SHM memory was not tagged as cache memory with kernel 2.6.9.If it is the case it is really unfortunate since normally cache memory can be considered to be part of the "available" memory since it can be flushed promptly but this is clearly not the case with SHM memory... Is there an easy way to get the total amount of used SHM memory on a system?
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Nov 30, 2010
That is what it says during boot (splash=verbose):
Code:
Starting KNetworkmanager
Connecting in 30 seconds
{counting down from here, no more text scrolling}
kdm starts (on screen 7) and I can give user name and password but on screen 1 is still this countdown. I have only mobile internet via (GSM / HSPA) and this is not connected when the wait is over.
I looked for a .conf file but those I found have no means to change this behaviour of the networkmanager. How can I set seconds to 1 or even 0?
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Apr 29, 2009
I'm fairly new to linux Red Hat. We are running Rhel 3 on our VM's. We ran into a issue, (Bug 121801 - athlon-smp kernel does not support >4GB of RAM. what the stepos are to upgrade the existing kernel to the new i686? .
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Sep 16, 2010
I am experiencing very high memory usage since upgrading, and it has gotten worse over the months since release. I noticed with all users logged out, I can go to terminal 1 and htop puts memory usage at 600MB for an idling, non logged in desktop. This wasn't the case on karmic, and my usage has not really changed. Upon logging in, it goes up to 800MB-1GB, on the desktop and idling. This has also been referenced at these places:
[URL]
Also, nautilus takes at minimum ~200MB and upwards of ~600MB sometimes, and Ive purged thumbnails already. That is utterly ridiculous for a window manager. why Lucid has gotten so bloated, and how to trim it up? Will Maverick address these issues?
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May 21, 2010
I dont know if this issue has already been solved, or if there are other threads dealing with it, but Im quite desperate with this bug that has been annoying me since I upgraded from 9.10 to 10.04.
Firs I thought it would be GEM related, but Im using a proprietary graphics card, so thats not the way to solve it. I experience the problems a memory leak provokes, mainly that, as time goes by with the laptop turned on, the system needs more resources to execute simple actions, and it freezes too many times. Plus IBUS will, suddenly, stop working (I still don't know if it is related or not), and, most of the times I log in, Notification Area 2.30.0 will load with errors.
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Jun 2, 2010
I used to use server 64, and it handled memory well with Jaunty and Karmic but with Lucid the memory usage is always high and can't run virtual machines.
[Code]...
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Feb 28, 2010
I have a problem booting anything from USB stick on my IBM Thinkpad T42. It used to run normally, I could even install Windows or Linux from it, but now it stopped working. This particular concern is about booting freshly installed Xubuntu version 9.04 off a Kingston 4GB flash stick. I've installed Xubuntu using usb-create program directly from a booted live cd. Installation went fine and all the options in BIOS are setup correctly (I think). In boot menu in BIOS the stick is recognized correctly and + appears in front of it. Stick is selected as primary boot device. BIOS usb support is also enabled.
Now when I power on the computer, it reads something from the stick and stops right after displaying:
SYSLINUX 3.63 Debian-2008=07=15 EBIOS ... etc...
Then nothing happens and the text stays on like this.
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May 19, 2010
Since today, I cannot start to X anymore. Grub loads, I let it start, then after a while screen goes black, stays black, puter not responding at all, screen goes to power save.
I can boot to safe console though but not start X there either.
So far I tried Memtest (no errors found) and apt-get update and upgrade. SafeX doesn't work.
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Sep 24, 2010
I have installed ubuntu 10.04LTS along with windows 7. but during startup when i select window 7's entry in grub my computer restarts.
i have tried update-grub but nothing changes.
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Jun 24, 2010
I am having a problem with my Fedora11, I am not sure wether it is software or hardware but this looks serious. My computer is running very slow and freezes up every few seconds. Every time I reboot I would get a kernel failure pop-up.
This is what the message says:
Kernel failure message 1:
Kernel failure message 2:
Call Trace:
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Feb 20, 2010
I'm very new to Linux but when I first installed it, I downloaded the Start-Up Manager so I could change the boot order. I have a dual boot Windows-Linux, I set the default as Windows. Recently my computer started booting to the system memory test in the grub menu instead of Windows. When I try to open the Start-Up Manager now it asks me for the password as usual and then does not start. How I would change it back to windows for the default? I'm running Ubuntu 9.10.
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Oct 24, 2009
I would like to install fedora onto a memory card 16Gb kingstone SDHC that I use in a ACER aspire one
I followed the instruction on the website and I found the following problem:
The wireless and Ethernet hardware where either not found or, if they were found, they did't work and there were no possibilities to make it work.
The strange thing is that almost every time after I attempted to boot form the memory when booting window as usual, the Ethernet hardware was not found anymore also under window!
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Feb 7, 2010
I am getting a "No devices matches MBR identifier 0x8c71ad6e!" message along with a reboot in 120 seconds message. This occurs after kernel load and at the start of openSUSE boot.
I have tried both the 64bit and 32bit downloads
openSUSE-11.2-KDE4-LiveCD-i686.iso
openSUSE-11.2-KDE4-LiveCD-x86_64.iso
I have checksum checked both images after download. I have attempted the install on CD and USB stick with both images and the result is always the same.
I've included a screen image on my site: No Devices Matches MBR Identifier | Badzilla
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Apr 28, 2010
I think it should be that the splash comes out immediately after one click ubuntu to boot in grub. just like that in windows....
But always it's black with a cursor twinkling before the splash comes out.And in fact it holds most of the boot time in the black screen.When splash comes out it just exists less than one second and immediately goes to the login window.
Though ubuntu lucid is very very wonderful now , i want it to be better .
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May 15, 2010
My laptop had Vista, I installed Lucid so I'm dualbooting with GRUB, and I'm wondering if anybody knows of a way to triple-boot with Mac OSX. Thanks in advance.
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Jun 6, 2010
server configuration: SCSI 36gig -> sdd; boot and root as it was first in the box;2 IDE hard drives -> sda/sdb for data; and1 SATA drive -> sdc for data.After upgrading to Lucid (not right away, but a bit later), it stopped booting:'Gave up waiting for root device.'ALERT! /dev/disk/by-uuid/........... does not exist. Dropping to a shell!(initramfs)Happily, pushing ^D let it resume booting, but it kept repeating. After some study, I found the Lucid release notes that said "if you upgrade to ext4, you have to manually update Grub". A quick check showed that sdd was now, indeed ext4 - nobody told me! And, why couldn't it update Grub by itself? But, I dutifully ran grub-install and life went back to normal.
Until last night, when I updated the kernel, etc. with apt-get and restarted, and grub dropped dead:More googling turned up this solution, which I used with an install CD:http://tinyurl.com/2dhswzzWhich worked, but it brought back the first problem, and running grub-install doesn't fix it. So, what do I do now?
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Apr 20, 2011
I run alot of Linux running in memory. Mainly by PXE booting a kernel and the entire OS as the "initrd" file.
I have a RHEL6 image running as a VirtualBox guest and the entire OS (minimal) is contained withing 1GB of disk. I wan't to boot the entire /dev/sda1 "/" (its the only partition on the drive, no swap) as the initrd file and run everything from memory. But grub won't let me. So before I try and re-invent the wheel I thought to post here first.
Details. RHEL 6 as guest in VIrtual BOX. configured with 3Gb memory. HD is single partition and known as /dev/sda1.
at the grub console. I issue
root (hd0,0)
kernel /boot/vmlinuz-2.6.32-19.el6.x86_64 root=/dev/ram0
initrd (hd0,0)
But the grub windows just freezes. Apparently it doesn't like the fact that I've referenced the entire partition (hd0,0) as the initrd. Any thoughts? Or any better boot loader like SYSLINUX?
BTW, I am not worried about the /etc/fstab mentioning /dev/sda1 at this point, I have a fix for that already. I would like to see grub load up the partition as an initrd.
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Apr 26, 2011
I downloaded Ubuntu Lucid...something onto a cd and I booted into it on my iMac G4. It brought me to a screen saying things like live is default press tab for more options etc and when I just press enter, the screen turns white, loads a few things, then it turns blank and after awhile, I hear the Ubuntu startup sound but my screen remains blank.
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Aug 2, 2010
I want to try OpenSUSE but don't want to get rid of Ubuntu yet. How can I install it so I will be able to dual boot? I have an empty partition of ~150GB ready for it.When I am installing OpenSUSE 11.3 I get this content in the boot section:
Code:
The bootloader is installed on a partition that does not lie entirely below 128 GB. The system might not boot.
[code]...
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Jan 12, 2010
i have installed kernel-xen to my centos 5.4 server ( with yum install kernel-xen ). My server has got 8192 mb pyschal ram with PAE kernel; but after i installed xen kernel to system, my ram is being 7919664KB....how can i fix this ? i want see 8192MB RAM with xen kernel
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Dec 8, 2010
I have a server for virtualization (Xen) and when I do a free -m it does not show all the memory (which should be 64GB), it shows 32GB (a considerable difference, isnt it?).
My hardware is a Dell R410 server:
Dual Xeon 5530
64GB DDR3
4x SAS 500GB in RAID 10
I tried to compile Xen 4.0.1 but I can't solve a compile error that it gives me (if you want to take a look: [URL]) that is the end of the compilation including the error. But, I installed Xen from yum directly after reformating the HD and it works fine now.
My kernel version: 2.6.18-194.26.1.el5xen x86_64
CentOS 5.5 64 bit
[root@server1 xen-4.0.1]# cat /proc/meminfo
MemTotal: 33554432 kB
[code]....
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Aug 7, 2011
this is a dual boot XP/UBUNTU 10.04. while using XP, the computer rebooted itself. the GRUB's screen appears, but neither the ubuntu nor the XP option works.
Ubuntu gives this error message:
Code:
0.797795 kernel panic-not syncing: vfs: enable to mount root fs on unknown-block (0,0)
XP hangs on a black screen... and that is it (thanks for support windows!) UBUNTU 10.04 live CD hangs when the 5 processing dots appears bellow the ubuntu logo. hangs the same way with the processing bar in UBUNTU 9.04 live CD. memory check (memtest86) is showing thousands of errors right from the start.
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May 20, 2010
My computer has 4GB installed but for some reason I could only see the 2 of the 4. At first I thought that this was because the XEN virtual operating system manager was running but even after I turned it off the problem exists. I could only see and use the 2GB of memory.
Code:
free -m
total used free shared buffers cached
Mem: 1914 1874 39 0 9 295
-/+ buffers/cache: 1570 343
Swap: 2062 1934 128
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Jan 18, 2010
How do I get rid of this message during boot. I have tried the system-config-kdump command but it gives me a "no command found" reply. I am using CentOS 5.4
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Nov 24, 2010
I'm using centos 5.4 on an Hp Compaq 500B, 4GB ram,I have just installed centos when i try to boot the pc it says "memory for crash kernel not in permissible range, pci not using mmconfig" then it shuts down after a while.
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Mar 18, 2010
I've installed LINUX for the very first time and when i rebooted it, i found this message on my screen "Memory for crashkernel notwithin permissible range" I tried all my attempt like given memory to kernel with this command "crashkernel=64M@16M" but no luck... Finally i tried to boot into single user mode might be it helped me..but same results
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Jul 30, 2009
After CentOS5.3 install to /sdb7 partition (on 2nd HD) and using Ubuntu Grub(on 1st HD mbr) to boot CentOS, I get "memory for crash kernel 0x0 to 0x0 not within permissible range" as soon as CentOS starts. I have 2G of ram. The message is on every boot. I've had several other linuxes on that partition without such an error message. Otherwise the OS starts fine. Is the message of concern/import?
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Jan 21, 2010
I just install CentOS 5.4.
The first message it gives after grub is Quote:Memory for Crash Kernel (0X0 to 0X0) notwithin permissible range
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