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Assistance with a Memory Allocation Error in c++, linux using g++


Assistance with a Memory Allocation Error in c++, linux using g++

By : stanicmail
Date : November 22 2020, 10:33 AM
it should still fix some issue I've searched for others with similar problem's to mine, but they all have much different code than I. , Take another look at this:
code :
for (int n = 0; n < 3; n++){    
    shots[i] = 0;
    made[i] = 0;
}


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Physical location aware user space memory allocation in Linux (memory controller affinity)

Physical location aware user space memory allocation in Linux (memory controller affinity)


By : Spikerbond
Date : March 29 2020, 07:55 AM
I hope this helps you . The Linux kernel Documentation/numastat.txt mentions the numactl package for managing memory controllers: http://linuxmanpages.com/man8/numactl.8.php
Memory allocation error - in Linux but not OSX Unix

Memory allocation error - in Linux but not OSX Unix


By : user4089060
Date : March 29 2020, 07:55 AM
will be helpful for those in need The sizeof(size_t) is platform dependent. On OSX with the default 32 bit code, size_t is 4 bytes. On 64 bit Linux, size_t is 8 bytes. If you're running on 64 bit Linux, you're reading a different n that you're reading on 32 bit OSX.
If you must use a binary data format, don't use the size of platform specific types as the field size. Decide whether the file header is 4 or 8 bytes, little or big endian, and use that consistently.
Linux kernel boot: how is memory allocation done when DTB and initramfs are initially in memory?

Linux kernel boot: how is memory allocation done when DTB and initramfs are initially in memory?


By : Vivek
Date : March 29 2020, 07:55 AM
Any of those help When the bootmem allocator is initialized, the available/free ram ranges are passed to it by the kernel. The kernel doesn't consider its own kernel, dtb, and initramfs as part of the available/free ram ranges. Which means that these ranges are marked as used ( already allocated ).
[ During boot-up, the active allocator is bootmem allocator. This is discarded at a later stage of boot-up in favour of other more advanced allocators like buddy allocator ( for page allocation ) and slub/slab/slob. ]
Choosing memory allocation api in linux kernel for allocating huge memory frequently

Choosing memory allocation api in linux kernel for allocating huge memory frequently


By : torabayashi
Date : March 29 2020, 07:55 AM
Hope that helps If you need large allocations, kmalloc() is not a good idea, because once the physical address space has become fragmented, large kmalloc() allocations will frequently fail.
So vmalloc() / vfree() is most probably the way to go - unless you need to share the buffer with the hardware device, in which case look into the CMA (Contiguous Memory Allocator), dma_alloc_from_contiguous() / dma_release_from_contiguous().
Memory Allocation vs RSS in Linux

Memory Allocation vs RSS in Linux


By : Cherokee
Date : March 29 2020, 07:55 AM
seems to work fine No, RSS is not expected to grow after every single allocation.
It's inefficient to keep asking the OS for tiny amounts of memory, so a good allocator will request a larger chunk, and then parcel it out without getting the OS involved.
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