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  • How to use Linux hugetlbfs for shared memory maps of files?
    For the data base example problem of the question, the idea would be to create files in a hugetlbfs file system (it is actually a kind of RAM file system based an huge memory pages), extend the files (with ftrunc()) to a multiple of huge page size, mmap the files into memory and use those memory zones as a buffers to read write database files
  • How to mount the huge tlb (huge page) as a file system?
    Stack Overflow for Teams Where developers technologists share private knowledge with coworkers; Advertising Reach devs technologists worldwide about your product, service or employer brand
  • Fatal error: hugetlbfs. h: No such file or directory
    $ dnf provides 'hugetlbfs h' Error: No Matches found $ dnf provides libhugetlbfs Error: No Matches found It looks like you may need to download libhugetlbfs from their repo for Fedora The old repo is at Sourceforge The new repo is at GitHub | libhugetlbfs According to apt-file, libhugetlbfs is provided by Ubuntu 18 For Ubuntu the header
  • How do I allocate a DMA buffer backed by 1GB HugePages in a linux . . .
    I can mount -t hugetlbfs nodev mnt hugepages CONFIG_HUGETLB_PAGE is true MAP_HUGETLB is defined I have read some info on using libhugetlbfs to call get_huge_pages() in user space, but ideally this buffer would be allocated in kernel space
  • How to implement MAP_HUGETLB in a character device driver?
    You can only mmap files with MAP_HUGETLB if they reside in a hugetlbfs filesystem Since proc is a procfs filesystem, you have no way of mapping those files through huge pages You can also see this from the checks performed in mmap by the kernel:
  • EAL initialization error on running DPDK sample program
    manually mount the pages mount -t hugetlbfs hugetlbfs path to hugepages2M -o pagesize=2M; All these are clearly covered getting started dpdk guide Hence I requested to please read up and follow as stated in the guide
  • Ubuntu 10. 04, error in using MAP_HUGETLB with MAP_SHARED
    There is a RAM file system (hugetlbfs) that does support huge pages However, huge_tlb mappings won't work on arbitrary files, as I understand the docs * For details on how to use HUGE_TLB and the corresponding in-memory file system (hugetlbfs), you might want to consider the following articles on LWN:
  • error setting nr_hugepages via SYSFS - Stack Overflow
    mkdir hugetlbfs mount -t hugetlbfs none hugetlbfs Note: IA-64 supports - 4KiB, 2MiB and 4MiB pages Note: x86_64 supports - 4KiB, 2MiB, 4MiB or 1GiB pages Next, depending on your requirement, edit etc sysctl conf file and specify the number of hugepages in the nr_hugepages:


















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