Programming :: Maximum Heap Size For A Process?

Mar 15, 2011

Is there any maximum limit to the heap memory allocation?My program is in PERL and i am using a solaris system. when i did "pmap pid" (pid = my process id) it is showing a number of heap memory allocated and all of them with GB sizes. This single process is eating up most of the physical memory.Is it normal and is there any way to get the heap memory size down

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Ubuntu :: Maximum Allocatable Heap Size For A Process?

Mar 30, 2010

I'm wondering what's the maximum heap space a process can use (not necessarily by a single malloc()) in Ubuntu x86_64. Which parameter determines the size

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Red Hat :: Find The Dynamic Stack And Heap Size Of A Running Process In Rhel?

Aug 26, 2010

I am trying to find the dyanmic heap size and stack size of a running process in rhel5.5 and rhel6.I read that the 23rd parameter in the file /proc/pid/stat gives the heap size.Can you elaborate more on this.Also is there any other way to do this?

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General :: Break Copy Process When Folder Size Reaches Its Maximum?

Mar 19, 2011

I have written a script.

#/bin/bash
a=`du -sh /root/samplefolder | cut -f1`
echo $a > testfile

[code]....

The aim of this script is, when the folder reaches 20M then attributes will be set to that particular folder so that no newfiles and folders cannot be created or copied to that samplefolder. whenever i copy a file morethan 20M to that folder its getting copied fully and then the attributes were applied. But i dont want this to happen, when the folder reaches its maximum current write operation to that folder should be stopped automatically with a error.

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Programming :: Maximum Ports Per Process?

Dec 8, 2010

I'm trying to build a multi-threaded server "C" program connecting to multiple clients. For various design reasons, I thought of having one port number per client. What is the maximum number of ports my process can handle

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Programming :: Restrict The Perl Array Maximum Size?

Feb 9, 2010

How to restrict the maximum size of an array variable in perl such that Ishould not be able to have array elements beyond the maximum size?

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Programming :: Sort A Binary Min-heap Tree

Mar 23, 2011

I'm searching for an algorithm to sort a binary min heap tree. That's when in root i have the smallest value in the tree. The only restriction it has, is that the parent must be smaller the its two children. i think something like quick-sort, but i don't know how to implement it.

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Hardware :: Mkpart With Maximum Size Available?

Feb 2, 2010

how to mkpart with maximum size available?

mkpart primary 0 3001G

I have 3TB raid disk. I cannot install centos using GPT partition. I need to use parted and mkpart to format it.

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Ubuntu Servers :: Set Maximum Attachment Size?

Jun 4, 2011

I use U-server. I set up an mail server as described in Ubuntu Documentation > Ubuntu 11.04 > Ubuntu Server Guide > Email Services.

How can I turn off maximum attachment size. On my server I don't want to limit the size of e mails that arrives.

I manage my server with webmin

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General :: Trash Has Reached Maximum Size

Mar 8, 2011

When I try to delete a file, ( move to trash ) It says , The trash has reached It's maximum size! clean the trash manually. When I click on the trash icon on desktop it is empty. Where is the trash? Where can I delete these files ?

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Server :: Loopback Device - Maximum Size

Sep 24, 2010

This seems like a relatively simple question, but the answer seems to elude everyone: What is the MAXIMUM SIZE of a Linux loopback device (not counting any specific filesystem limitations)? Is it the maximum size of a linux block device?

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CentOS 5 :: Find Out Maximum I/O Request Size?

Nov 28, 2009

How do I find out maximum I/O request size?

I'm using CentOS release 5.2

I know that the default size is 128 K, how do I find out/confirm this?

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Ubuntu :: Maximum The CPU Usage For A Process?

Apr 2, 2010

How can I maximum the CPU usage for a process? And also use both cores if possible.

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General :: Boot - Maximum Vmalloc Parameter Size?

May 31, 2011

First off all, I'm booting from a large MEMDISK using PXE (900MB) . Due to our environment, I cannot decrease the size, nor move files to a nfs/iSCSI/... environment. Everything needs to be in that MEMDISK.

Now, when I try to run the OS, I get out of vmalloc space. How do I increase it to a number which allows such a large image to be mapped? I tried the parameter "vmalloc=1280M", but with that parameter, I don't get past the Booting the kernel screen.

Memory should not be an issue, since the machine(s) have at least 2GB RAM. (900MB MEMDISK + 256MB for other kernel stuff + 768MB for user stuff). The machine(s) have a Pentium 4 Extreme Edition processor, with hyperthreading and SSE2, but no EM64T.

How can I boot the system, and get past that message? Decreasing the MEMDISK size is not possible too. It is at the smallest we can get with our userland + kernel + modules.

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General :: Changing Maximum Shared Memory Size

Jul 17, 2011

How do I change the size of the available shared memory on Linux?evidently 4GB is not enough for what I am doing (I need to load a lot of data into shared memory - my machine got 8GB of RAM).

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General :: 512KB Maximum Transfer Size Per Command?

Apr 7, 2011

I'm using fc14 and the SG driver to test some SCSI (SAS) targets. In doing so, I'm bumping up against what appears to be a 512KB maximum transfer size per command. Transfers up to 4MB sometimes work, but often they result in ENOMEM or EINVAL returned from the write() function in the SG driver. I could not find any good documentation on how the SCSI system in Linux works so I've been studying the source for drivers in drivers/scsi.

I see that there is a scsi_device struct that contains a request_queue struct that contains a queue_limits struct that contains an element called max_sectors. The SG driver seems to use this to limit the size of the reserve buffer it is willing to create. I see that there are several constants used to initialize max_sectors to 1024 which would result in the 512KB limit I see (with targets having 512 byte sectors). At this point I have several questions:

1) When the open() function for the sg driver gets called, who initializes the scsi_device struct with the default values?

2) Can I merely change the limits struct to arbitrary values after initialization and cause the SG ioctls to set the reserve buffer to allow greater values?......

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General :: Fixed Maximum CPU Usage For A Process

Jan 31, 2010

Are there a way to set fixed maximum processing power to a process.For example a program called 'X' uses cpu in high speed. I need to set this 'X' process to to run with maximum 20% of cpu usage at any time.

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General :: Find Out Maximum Size Of A Image Disk File Created By Kvm-img?

May 22, 2011

I created a VM disk image with kvm-img, but I forget what was the max size of that disk image when I created it. Currently, its size is 6.2G, I want to install some large packages in that VM, so I want to make sure the disk image can expand to an adequate size.

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General :: Squid Cache_dir Hard Disk Space Reaching The Maximum Size?

Jan 20, 2010

I have set up squid server. My cache directory has been set up as per following statements.cache_dir ufs /Cache1/squid 10000 16 256cache_dir ufs /Cache2/squid 10000 16 256Now the problem is that size of /Cache1 and /Cache2 has reached to about 8GB and in near future it will reach the maximum limit of 10GB. I just want to know that whether I need to delete the contents of these directories or otherwise.

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Software :: Both GThumb And Geeqie Image Viewers Have Limited Maximum Size For Thumbernails?

May 22, 2010

Both gThumb and Geeqie image viewers have limited maximum size for thumbernails. Is there any way to work with bigger thumbernails (or slide photos)?

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Programming :: Maximum Digits In The GMP?

Mar 27, 2011

how much big number can be managed by gmp library under plain GCC environment? (does GMP cover infinite length of integer?)

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Programming :: Displaying Process Id In Shell Script But There Is No Such Process?

Nov 9, 2010

I have a shell script to identify whether the process is running or not. If the process is not running, then I execute another script file to run my application. Below is my script and saved this script as monitorprocess.sh Code: #!/bin/bash

result=$(ps -ef | grep -v grep | grep "applicationname.sh" | awk '{print $2}')
echo $result
if [ "$result" == "" ];

[code]...

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Programming :: Difference Between Init.rc Process And Normal Process?

Mar 31, 2011

Is there any difference in cpu usage for process in init.rc(runs automatic when boot is happened) and manually running process. Will these both have same priority by default...?

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Programming ::get The PID Of The Process Giving Kill Signal To A Process?

Nov 26, 2008

I tried googling but didn't get any answer for this.I have a process called "abc" and it is running with PID "123".I have a putty session opened with PID "999".I am giving kill -TERM 123 from putty session.My process "abc" before dying it should catch the PID of the terminal which provided TERM signal to it.Is there any way to find this out

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Software :: How To Get Size Of Memory Used By Each Process?

Jul 25, 2009

I need to know, what process for what purpose is using memory in my machine. ps utility with various options seems to give not exactly what i want, i.e. if i sum all the values like RSS, VSZ or some other values related to memory usage, the sum is not equal (even approximately) to what i get using free|grep "buffers/cache".
How can i get this information? Even better, i would like to see contribution of every process, ramdisk, etc. to memory usage.

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General :: How To Get Stack Size Of Running Process?

Apr 17, 2011

Can anyone tell me that how to get information about stack, allocated by kernel to a running process? for this ,is there any api function,any system call is available in ubuntu 8.04 ?

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Software :: Find The Size Of A Stack When A Process Is Running?

Dec 6, 2010

How do we find the size of a stack when a process is running?

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Programming :: Finding Maximum Length File In A Directory Recursively Using Shell Scripting?

Nov 8, 2010

I want to find maximum length file in a given directory. It should search recursivley. I want this to be done using ls and simple looping constructs.

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Programming :: Showing Process Id But There Is No Such Process?

Nov 9, 2010

I have a shell script to identify whether the process is running or not. If the process is not running, then I execute another script file to run my application. Below is my script and saved this script as monitorprocess.sh

Code:
#!/bin/bash
result=$(ps -ef | grep -v grep | grep "applicationname.sh" | awk '{print $2}')

[code]...

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General :: Killing Parent Process Without Killing Child Process (Linux C Programming)?

Mar 10, 2011

I want to kill parent process after "fork()" method. but if I kill parent process with "exit(0)" method, main() thread is terminated as well so child prosess doesn't work anymore. Is there any way to kill only parent process without affecting to child process?

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

[code]....

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