Ubuntu :: Programs Silently Crash When Mem Use Is High
Feb 4, 2010
I'm a Linux noob. I'm using Karmic on a laptop with 1.5GB RAM and same as swap partition. Generally I'm happy with the mem usage. I have MySQL, SVN, Apache/PHP/xdebug, firefox w/ dev addons, Eclipse PDT and, of course, my music :) running at the same time, generally ok. I have the System Monitor's mem display on the top bar (dunno proper name) and can watch usage increase. Also the swap file's often only 100 - 300 megs.
However... from time to time I notice that as the programs' mem use gets close to 100% in the little sys monitor display the HD thrashes for 5 - 10 mins, after which some progs have silently crashed. AFAIR it always involves Eclipse (so maybe I should post on their boards), but not only. This last time I lost VLC and therefore my music. Obviously losing your music's far more important than losing some coding, so that's why I'm trying to resolve it now:)
I'm running Munin on my system (tho not because of this issue) and took a look at mem usage immediately before it happened. Here's the pic - you can see the sudden drop as the two progs (only AFAIK) closed on the very right side of the image. I'm not a guru here and am not sure if there's much to infer. I know some recommend 2xRAM for swap, but max committed was only 2.29 compared to potential 3, so that shouldn't be a problem? In fact the swap file never got large at all AFAICT. (Btw swappiness = default = 60.)
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May 12, 2010
I have recently upgraded from Kubuntu 9.10 to 10.04. I am having trouble with CPU usage by the X server. When running KDE programs (for example Kontact and Amarok) my computer is becoming very sluggish. This seems to be because X is using 90-100% of the CPU constantly when there are any changes to the application (any sort of redraw, even the mouse moving across the screen). I don't experience this with other applications (I am currently writing this from Chromium with no issues at all). Below is all the relevant information I can think to include.
INSTALL PROCESS: Fresh install from Ubuntu 10.04 LiveCD. My /home direrctory is on a separate partition so that has remained unchanged from 9.10. After installing Ubuntu, I installed the kubuntu-desktop package to install kdm and the KDE desktop.
The only real change from my last install is that /var is now also a separate partition (in a bid to save my MySQL data should I have to reinstall again) but it is on the same hard drive as my root partition and so shouldn't be causing any performance issues.
MY X SETUP: Three screen setup using onboard and PCI graphics cards. This worked perfectly before and, after reconfiguring X using nvidia-xconfig works almost as well again. Except that one of my monitors autodetects at 1280x1024 where before it was a higher (and widescreen) resolution.
The issue only presents itself when KDE application screens are visible and disappears when they are hidden (either minimised or closed) As far as Ican tell it could be an X, Qt or KDE issue. But I am not sure what versions of these will have been changed in the upgrade.
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Jul 19, 2010
Basically I have a machine with 16GB of RAM and have just discovered that using all of it can crash the whole system over one process. How could I run a process on the system in such a way that if more than 90% of system memory is used, the process immediately crashes?
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Feb 8, 2011
my server normally has low load of 0.80 now it is 4.0 'top' shows that programs are not using high cpu, but %wa is very high (80-90%). it has been like this for hours now.how can i find out which program has caused this?
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Sep 21, 2010
I've recently installed ubuntu, and right away from a fresh install programs would crash whenever I closed the last window. It doesn't give me any error messages, so I don't know what the problem is , just poof the programs is gone and I have to launch it again. This happens in almost every program, I've used except rtythmbox. it's not a big deal for the small programs that load instantly, but for firefox or openoffice it's big pain in the neck.
my hardware:
Motherboard: INTEL LGA775 DDR-3 PCI-e X16 SATA MBOARD
Intel Core 2 Quad Processors: Intel Core 2 Quad Q8300 2.5Ghz 4MB
CPU Processor Fan: REGULAR COOLING FAN & HEATSINK COMBO KIT
DDR3 240-pin MEMORY: 1GB DDR3 1333MHZ PC3 10600 SYSTEM MEMORY
Hard Drive: 1TB 1000GB 7200Rpm SATA HARD DRIVE
VIDEO CARD ADAPTERS: Ati Radeon Hd4850 1gb Dual Dvi Video
SOUND CARDS: REALTEK 3D STEREO SOUND CARD ADAPTER
NETWORKING: ONBOARD ETHERNET CARD ADAPTER (LAN)
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Jan 9, 2010
I have a lot of recordings on my mythtv box.i can see/play them fine within the mythfrontend interface, and mythweb loads almost all pages ok (including schedules, guides, etc.), but when I click on 'recorded programs' at the top, Allowed memory size of 33554432 bytes exhausted (tried to allocate 88 bytes) in /usr/ share/ mythtv/mythweb/includes/translate.php on line 142.I've had this error before, and it went away when I purged my list of recordings.
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Dec 8, 2010
After updating recently VLC does not play audio or video, and it does not complain about not being able to do so, even when running from terminal.
The version is VLC media player 1.0.6 Goldeneye.
I have tried resetting the preferences.
I don't know how to troubleshoot any further..
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Jun 2, 2011
This comes at some point after installing GNS3 and Dynamips, which require administrator access as GUI's. Although, the first couple times I tried to run GNS3 as administrator, it worked fine. I do still receive the password prompt, whether running from the command line or the context menu. Note that GNS3 is the first application for which I've needed to run gksudo, so this may have been an issue before the above were installed, although I've always been able to run "Open as Administrator" in Nautilus and "Synaptic Package Manager," which now will not run either.
Running Ubuntu 10.10.
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Jan 11, 2010
I tried installing Ubuntu 9.10 using both Ubuntu Desktop CD and the Netbook Remix on a EEEPC 1005HA with an external CD drive.
In both cases I don't get any graphical interface during the installation. The CD is apparently installing everything silently, without letting me change anything on the way, and then it gets stuck.
The only screen I get is the first one, with the options to "try Ubuntu" or "install Ubuntu".
What's going on?
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Mar 22, 2011
I am running the testing version and am fully up to date. When I try to run evolution, I get the following errors in a terminal. When I launch it normally, I don't see any messages, it just never loads.
$ evolution code...
What can I do to debug this and get it working again?
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Feb 19, 2010
I am working on a bash script which among its operations creates directories using the mkdir command. However, when the directory already exists mkdir mentions that in the command line output.
Is there any way I can make mkdir silently overwrite any existent directory? (no messages in the output). For the same price, could it be done with other commands such as cp or mv?
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Aug 4, 2011
Using sendmail, I am trying to setup a catchall address to silently discard spam mail sent to undefined users. I don't want to bounce a reply for "no user" as this often goes back to munged or innocent addresses.
I have a number of domains, so my virtuser table currently looks rather like this:
Code:
The last line is the "catchall" which is intended to ensure that any undefined users from either my_domain.com or my_domain.co.uk is forwarded to the non-existent "catchall" user account. Note that all mail sent to my_domain.com is passed across to my_domain.co.uk at the very start so all the following rules should apply to messages received at both domains. (Both of these domains appear in the
Being non-existent, I setup the following rules in the access data table:
Code:
This way, if I send an email to 'user1@my_domain.com' it is received and delivered to user1@my_domain.co.uk, but if I send an email to 'rubbish@my_domain.com' it *should* be received and silently discarded.
Unfortunately what actually happens is the server responds with:
Now, (just for testing), I made "catchall" an alias for the "postmaster" account and the mail was then received and delivered into the postmaster mailbox. So I know the virtuser rule is working. The account "catchall", however, is not being silently dropped as desired in either configuration.
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Jul 30, 2009
Firefox 3.1 beta 3 won't load. When I open the application, the little bouncy icon bounces, and the task manager shows "Firefox Web Browser", but this only stays this way for about 15 seconds then just goes away. No error or anything.
I've had this identical problem when I try to open certain programs with Wine too. Is there some place I can find a detailed error report on these failures?
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Feb 16, 2011
I'm running Kubuntu 10.10 with a Laserjet 5M printer. When I attempt to print a job from Firefox or from Okular, the job never gets onto the print queue. However, I can print test pages on the printer and also print from OpenOffice, so this seems to be app-dependent. I know the jobs aren't being queued because the job number doesn't increase (as shown by the jobs for the test pages). Both Firefox and Ocular give every indication that the print job has been processed correctly.
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Jun 14, 2011
I'm running Fedora 15 with current updates and kernel. I do not have anything special or non-standard about my configuration or setup. I use grsync to sync my home folder files to a remote rsync server on my network. I've checked my hard drives and my memory and everything else I can think. Here is the problem:
grsync will run for some time and once it nears completion it will crash. This, however, is no standard crash. It literally shuts my computer "OFF". I have shared the remote rsync folder through CIFS as well and I can copy those exact same files through nautilus with drag and drop without issue. I have had a few occasions where the rsync process will complete without issue, but this is a rare occasion. Since it powers my computer completely off I do not enjoy the luxury of having any log files or messages to attempt to diagnose from.
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Dec 29, 2009
can open the programs pe-install, but can't open other programs or install new programs
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Jul 19, 2011
I am running 10.10 on a netbook (1.6Ghz Atom N270, 2GB RAM). Because it has limited resources, I am currently testing to see which apps I want to use.
Which should take more priority -- an application that uses less RAM or an application that uses less CPU?
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Feb 12, 2010
I'm running desktop machine with with a core2 duo E6400 with 2GB RAM. I have completed a fresh install of Ubuntu 9.10 (fully updated). I have 10GB root, 2GB swap, 10GB home and 80GB data parititons.
I log in to main administrator account (first boot), create a new user (desktop) account and then use the switch user to log into the desktop account (so logged in to two accounts at the same time).
Whilst logged into the desktop account the CPU usage as seen in system monitor shows the two CPU's alternating at around 100% and the system slows down greatly.
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Apr 12, 2010
Ubuntu 9.04 64-bit I just checked my system monitor and it looks like my memory is at a constant 900 MB's out of 4 gigs of ram. This seems high for only having firefox open.
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Apr 13, 2010
I have a notebook with AMD Athlon 64 QL-62 2 cores CPU. Normally the temperature is 50-52 Celsius in idle but with Ubuntu 10.04 beta 2 idle temp is 60 Celsius. /proc/cpuinfo shows both cores on 1GHz which is good but still temp is higher than usual. I tried to find solution using Google but I didn't find anything.
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May 3, 2010
If I install Linux Mint 8 or Open Suse , temperature is 48 as windows mostly.If I install any other distro, temperature goes to 80-85 and fan is always On.Ive a laptop dell just bought it, dell studio 15, 4ghz ram dual core etc, a monster for linux but ive this problem, kinda annoying when you wanna have something silent and that doesnt become a furnace.
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Jul 11, 2010
My problem seems to be very simple, it's high memory usage. I occasionally will use movie player to watch a few shows and I use firefox as well. My memory usage starts out real small about 500 mb but after using firefox lightly and movie player it jumps to almost 2 gigs and this is after they've been closed what gives? I've attached an image so you can see what I'm talking about.
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Aug 2, 2010
I don't understand why I have a 800MB usage at startup. I didn't add any programs to start at startup. I do though have 10 primary partitions that are auto mounted at startup but it shouldn't use up so much, I have 2GB total RAM.
At startup nautilus uses ~400MB of virtual memory in the "system monitor"
Also which is RAM and which is SWAP in resources in system monitor: Virtual Memory && Memory?
-i figure vm is ram but thats not possible sometimes...it exceeds 2GB
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Aug 11, 2010
The mouse sensitivity in Ubuntu is a little too high, and no matter how I set the mouse settings its either too sensitive or too slow...or too fast. I have tried many times to find the correct mouse settings adjusting both acceleration and sensitivity but nothing seems to be good. I've tried both my Microsoft mouse and Logitech MX Performance mouse and the same problem is apparent on both. Is there a bug with Ubuntu's mouse settings or something (I'm sure I heard about it some time ago - that the sensitivity settings aren't working exactly as they should be?), and is there any way around it? (or at least, be able to set good settings some how).
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Nov 29, 2010
I'm running 10.10, but this seems to be an ongoing problem. While every other OS on the planet seems to be able to high level format LS-120 super floppies in their IDE drive, Linux can't. DR DOS can. OS/2 can. Windows 98 forward can.
We aren't talking low level format here. We are talking "quick" format where a new FAT and label are written to the media along with the high level markings/surface scan.
I can load a disk, copy to it, delete from it, but cannot perform a high level format.
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Apr 1, 2011
I play RuneScape most of the time i'm on the computer and i always keep an eye on the performance. Yesterday and the days before, everything was going good, cpu usage it was causing was between 30 and 60%, now it wont go below 70%. It's always 70-99% for some reason :s i have set settings for graphics to OpenGL (they were like that before too with no problem) and it started causing high cpu usage. If i set it to Safe Mode in graphics settings it gets 100%, I never tweaked the drivers, i have a NVIDIA GeForce 9600 GT, i have the opengl thingies installed along with my nvidia driver. Ubuntu 10.10 32bit.
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Apr 30, 2011
I just installed Kubuntu 11.04.
I ran VLC and it brought my PC to a halt.
I attached a picture of memory usage from htop.
Why do you think VLC is using so much system resources?
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Jun 13, 2011
For the last 6 months the fan has been on more and more whenever I m online or listening/watching media.Its getting to the point where the computer is virtually unusale as the noise is so louod and stress inducing-Does my cache need clearing and if so how do I do it?(it seems to be "plugin container" thats usually causing the problem, but if you stop it then things dont work properly)
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Feb 24, 2010
I'm running Kubuntu 9.1 (KDE 4.4) on an IBM Thinkpad T30. By default K set my resolution to the highest output of my graphics card (ATI Mobility Radeon 7500) which I was able to change via xrandr at command line, however now the K menus and taskbar appear to be set at too high a resolution of their own to properly display. The K menu and taskbar appear pixelated and unreadable. Is there any way to change this or has Kubuntu likely just installed the wrong driver for my card?
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Apr 5, 2010
Most of my many Linux installs boot up to a memory use of 170-190 MB with no open or running programs. But with Ubuntu 9.10 it shows; 305-310 MB and the top RAM use item is the; compiz.real, which I think is a display desktop effects application. I have the nvidia video card driver installed, and that nvidia X-Server configuration tool. Also I can not find where that compiz options is at, ( the display options in system, preferances does not open, and says to use my video card tool ).
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