Programming :: Write() To Disk Causes Memory Leak?

Oct 26, 2010

I have encountered this problem of memory usage is increasing as the during the my program is being run until 1Mb is left then it stays at that.A part of the program is this:

#define WRITE_BUF_SIZE (1024*1024)
void post_data(const void *data, unsigned long size)


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Programming :: Memory Leak In C++?

Mar 3, 2011

I'm currently developping a program in C++, using Qt, for an embedded board (SBC9261).It works well but crashes after some time, due to a system memory overload (my program uses more and more memory until 100%, when it crashes).I've been able to figure out the source of the memory leak :The function f is called by my program every second. f instanciates a new object (a QImage from the Qt lib), does a bunch of processing on it, and returns it to the calling function :

QImage *MyClass::f(QString filename) {// Open image
QImage *image = new QImage(filename);


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Programming :: Creating A Memory Leak In C++?

Dec 16, 2010

I need to write a small program that eats away at availabe memory. I need to creaty a memory leak to test how other programs cope. I need to run this program on linux and see if the available memory is decreasing.

So I have done:
int main()
int *buffer;


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Programming :: Memory Leak Whenever Try To Connect The Server Using The ()?

Jun 3, 2010

I am facing problem of Memory leak whenever i try to connect the Server using the ().

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Ubuntu :: Memory Leak / Some Process Eating All Memory

Jan 29, 2011

I have had a fresh install of Ubuntu 9.10 and installed some software after that.Since third some, some process is eating half of my memory.I have checked processes running in system manager but everything is normal.Maximum is consumed by compiz which is about 26 mb, seems very normal.I did restarted my computer several times, and in the start for 5 mins, its fine after that again my cpu fans runs at very fast speed and my one cpu is used up 95 % (I have dual core).Please help me out, this invisible thing is driving me crazy.I am attaching my htop screen shot (sorted by cpu %), now the cpu is not used by completely but fan is still struggling hard and fast.

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Programming :: Write A Script That Can Show Me Total Memory Vs Used Memory?

Apr 13, 2010

How do I write a script for my Linux that can show me total memory vs used memory and have it email me results if it's over 70 percent?

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Hardware :: Memory Leak On CentOS?

Jan 24, 2011

root@XXXXX:~# uname -a Linux myserver 2.6.18-194.11.4.el5 #1 SMP Tue Sep 21 05:40:24 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux I'm having serious memory leak issues on a server running CentOS. Running 'top' I can't find any proccess with an unusual memory usage. Is there any other way to check what is using this memory? Right now it shows that I have 4.8GB of RAM used, but top shows only few proccesses, one with 4% and lots of 0.0%.

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OpenSUSE Multimedia :: Serious Xorg Memory Leak KDE 4.2 OS 11.0?

Feb 3, 2009

I have 4 gigs of ram and xorg goobles up 70+% in a matter of an hour or so. I'm running a java app with lots of 2D graphics, firefox, pidgin, and one other java app. I recently upgraded to KDE 4.2 and got dual ATI firepro 3700 cards running 3 22" widescreens. The memory gets eaten until my java app crashes.

I'm using the fglrx driver as it seems the radeonhd one doesn't recognize the firepro 3700. Can one only have a single KDE4 version on the machine. I would like to be able to swtch back and forth between 4.1 and 4.2 in order to troubleshoot without all the downloading and installing in yast.

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General :: Find Memory Leak For Process

Mar 5, 2010

Is there any link where i can get information about below?

Dirty memory
One more?

if a set of process are getting executed in a use case say 50 times. How do one know the memory leak for a particular process?

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General :: Memory Leak Whenever Try To Connect The Server Using The ()?

Jun 3, 2010

I am facing problem of Memory leak whenever i try to connect the Server using the ().getting rid of this problem.

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Server :: Malloc-64 Memory Leak/trashing?

Mar 2, 2011

I'm afraid I have a huge issue with my newest Fedora 14 server. I recently migrated to Fedora 14 from Centos 5, which was very stable, but had ancient packages and libraries and my users were revolting...The machine is a HP ProLiant 360 G7, with 12G RAM and 6 SAS drives in RAID 5.After I migrated to Fedora 14, I noticed that for some reason, during the course of about 24 hours, all usable RAM "disappears" and applications are forced down to swap space. Needless to say I didn't have this issue on CentOS.

The server does heavy IO as per it's function (it's a heavily loaded file processing server and user simulation computing station among other things, which causes lots of random IO), so I thought it may be the cache, but then I realized it cannot be - because obviously Linux will use onyl "unused" RAM for caching and frees it up as soon as an app need it. Then, I thought to check the "slabtop" to see what's going on in Kernel memory. Unfortunately I don't have the screenshot from the time just before the latest crash, but there's a certain value displayed by slabtop, which slowly, byte-from-byte creeps over all available RAM, eventually forcing applications down to the swap. This is malloc-64, and as you can see from the bellow copy-paste, it's building up again even now...

Active / Total Objects (% used) : 9118075 / 9153600 (99.6%)
Active / Total Slabs (% used) : 152157 / 152157 (100.0%)


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CentOS 5 :: Memory Leak Bug On Production Server

Mar 20, 2009

My server [URL] goes down in some cases.

On general time load average is 0,15-0,2 Only http(with php) and mysql working on it.

Here are some screens when the server goes down: [URL]

Here are the same bug with mine described: [URL]

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Ubuntu Installation :: GEM Memory Leak From GLX 1.4 Backport, First Step?

May 15, 2010

I can confirm my machine's GLX version is 1.4, and I definitively get the slow down problem, however, after running in a terminal:

grep "object bytes" /sys/kernel/debug/dri/0/gem_objects
grep: /sys/kernel/debug/dri/0/gem_objects: No such file or directory
What am I doing wrong?

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Ubuntu :: Nvidia 195.36.24 Driver 10.04 Lucid Memory Leak?

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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Ubuntu Servers :: Apache Segfaults Causes Memory Leak?

Jun 12, 2011

I'm having some strange issues with apache. Time by time it segfaults, eats all available memory (including swap) and makes server non responding.Ubuntu Server 10.04.2 LTS

Some strange logs:
Jun 12 12:00:18 *** kernel: [40767.969443] apache2[7635]: segfault at 726f7272 ip 00007f13a31f3f16 sp 00007fff6f740ea0 error 4 in[7f13a31d7000+35000]


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Ubuntu Installation :: Memory Leak Lenovo Ideapad Y560?

Nov 18, 2010

I installed Ubuntu 10.4 and everything works great "out of the box"! I didn't install any drivers.blem, a major one...When I type "top" right after a reboot, around 1GB of RAM is in use. After a few min it grows to 2GB, even 2.5GB for no reason. Luckily, my machine has 6GB of RAM but it's still a major issue for me.I read on another forum another user with the same problem on the same Lenovo machine and he solved it by installing the newest driver for his ATI device. I don't have ATI, but I have the impression that I can solve my problem the same way. Do you have any idea what driver my cause that? I checked the Intel site for a new Intel HD graphics driver but they don't have ones for Linux.

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CentOS 5 :: Apache Memory Leak Since Glibc-2.5-42.el5_4.2 Update?

Jan 4, 2010

I updated several packages on one of my servers on Dec 21st and have been seeing excessive swapfile usage since then. The problem process seems to be httpd which in our environment runs a subversion server as well as serving a number of php pages over https. At present I am having to bounce apache approximately every 5 days as it has used all 8GB swap in that time.


Of the updates listed as installed, the only one that looks likely to affect apache is glibc. Looking at the stats from sar -r I can see swap usage increasing by approx 3% (of 8GB) every hour.

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Programming :: Write A Value From A Specific Memory Location In C?

Jul 13, 2010

How to write a value to a specific memory location in C language and how to access the same value ?
I am trying the same on fedora linux and i am trying to write the value to the 32-bit address.

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Fedora :: Minimize / Prevent The Memory Leak Other Than Waiting For The Next Version Of Gnome 3?

May 27, 2011

I'm using Fedora 15 with Gnome 3 on a 32 bit laptop. I noticed that there seems to be a huge memory leak issue with Gnome shell. When I restart it, it is around 20 MB. But it keeps rising, and after around eight hours, I noticed it was around 250 MB! I found a solution online that said to simply restart the shell if the gnome-shell memory consumption becomes too large. While this is fine as a temporary solution, I am looking for a permanent one. Is there a way to minimize/prevent the memory leak other than waiting for the next version of Gnome 3?

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Programming :: Write Script To Look For The Presence Of Memory Allocation Calls Without Corresponding?

May 14, 2011

I need to write script to look for the presence of memory allocation calls without corresponding calls to free the memory

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Programming :: Write A Script To Calculate The Total Amount Of Installed Memory?

Apr 4, 2011

I am trying to write a script to calculate the total amount of installed memory to use during an anaconda kickscript, so the swap file is created at 2 x the installed memory. I so far have the amount of installed RAM DIMMS but need a way to total them up and produce a varible I can use in the pre section of the install.


dmidecode -t 17 | grep Size | awk ' { print $2 }'

Note: on some servers there could be from 1 DIMM up to 16 DIMMS installed so the script needs to be able to handle this. I also can not use bc as it does not exist during the install stage. I am guessing I need a while loop to do this and use expr but do not know where to start for this logic.

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Programming :: Process Does Not Write To Disk While On Background

May 18, 2011

I am doing a program that reads data from a gps and some other devices and writes some files with all the information. When I run it normally it works fine, but if I run the program in the background (with the ampersand) files are not created until I bring it to foreground or close it. I am confused, the program should run the same way with and without the ampersand. (Could it be that the main process that creates all the threads does not create them when it is executed in background? It seems like if the program is stopped until I take it to the foreground).

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Programming :: Memory Leaks - Glibc Detected - ./SuffixTree: Malloc() - Memory Corruption - 0x00

Mar 21, 2011

I am new to C and linux. My code below does arbitary writes but I cant figure out where or how it does it.

I am calling the insertNode() function with seq = 'MISSISSPPI$' and alphabets = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ$'


Weird behaviour I should mention is that when I check for NULL pointer in node->child[index], the unassigned values are not null anymore, they point to arbitary memory.

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Ubuntu Installation :: Use Ram Instead Of Disk - Write To Disk At Shutdown

Mar 21, 2011

I have a netbook I'm not using and which I transformed into a server with Apache, Tomcat6, Netatalk, Webmin, BIND9 and Tor.

Problem is, the disks never stop spinning because all of the programs write a few kb at least every few seconds to disk, even when nobody is connected to it.

My question is: Is there a way to have the computer boot from disk like normal (maybe even a squashfs), keep ALL CHANGES to ram and then save to disk when either the ram is full (unlikely because the server is rebooted every few days) or at shutdown?

I thought about a mixture of ramfs and unionfs but I'm not good enough yet...

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Programming :: SHM Memory Counted As Cache Memory With Kernel 2.6.18?

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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Red Hat / Fedora :: Read Or Write At Specified Memory Location On SD Card

Dec 10, 2010

I am new to linux at driver level. I want to read/write at specified memory location in microSD card in linux. I do not want to used SD card with any file system. How to do that. My linux distribution is Fedora13.

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General :: Write *.iso Image Files Onto USB Memory Stick?

Sep 6, 2009

Can you please do me favor and let me know how can I write the *.iso image files onto USB memory sticks as if we burn them into CD and thus making bootable CD to boot from ? Is there any command under Linux for this purpose ?

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Fedora Hardware :: Can't Write To Flash Memory. Automatically Set As Read-only

Jan 21, 2010

I used to be able to write to my SD memory card but just recently it is being automatically mounted as read-only. I checked the read-only tab and tried to set it to the lock position, and to the unlock position. Neither position makes a difference. It was working normally a few days ago. I also tried changing the permission using su

ls -lt gives the following result
drwxr-xr-x 4 col root 16384 1970-01-01 01:00 CANON_DC
chmod chgrp and chown in su mode don't change anything either.

I tried mounting a different 1GB SD card and it works perfectly. I noticed that when I mount this card I get a window asking me what I want to do, but I don't get this on the other card. It must some kind of setting related to the unwriteable card.

I am using F10

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Networking :: Write Network Packets To Memory In Byte Format?

Feb 7, 2011

I'm sniffing network packets in ubuntu, I need to write these packets as raw bytes to memory but libpcap give packets in its special format. how can i save and recover packets in byte format?

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SUSE / Novell :: Write A Script To Monitor Memory And Cpu Usage?

Jul 22, 2009

Im just trying to write some script to caputre memory and cpu usage on SLES servers, I just wanna use "top |grep Mem" and "top |grep Cpu". when I ran the above command, it just keep going. i just want to get one line each for memory and cpu.

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